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Important changes to the Renewable Heat Incentive scheme coming on September 20th

Posted by Jordan Willis on 19 September 2017 at 2:43 pm

Important changes to the Renewable Heat Incentive scheme coming on September 20th

The Renewable Heat Incentive (RHI) scheme, introduced in 2011, was designed to pay households for heat generation from renewable energy sources. In encouraging news, Ofgem have confirmed that RHI is set to see a significant increase in payments from the 20th September 2017 onward. Subject to fina…

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How do you assess the efficiency of a ground source heat pump?

Posted by Alex Barrett on 13 June 2017 at 10:57 am

How do you assess the efficiency of a ground source heat pump?

Ground Source Heat Pumps (GSHP) extract heat from the ground, and use it to produce hot water. The temperature in the subsurface remains around 11-12oC throughout the year [1]. By burying pipes just a few metres below the ground you can take advantage of this readily available supply of thermal e…

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A fridge in reverse: the air source heat pump

Posted by Anna Carlini on 11 January 2017 at 12:10 pm

A fridge in reverse: the air source heat pump

What is an air source heat pump? Air source heat pumps allow us to generate hot water or warm air, by making the most of the free heat in the air outside our house. But how exactly do they work? This informative video produced by YouGen member, Nu-Heat, explains the process the air source hea…

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Changes to Renewable Heat Incentive tariffs from Spring 2017

Posted by Trish O'Flynn on 20 December 2016 at 11:20 am

Changes to Renewable Heat Incentive tariffs from Spring 2017

On 14 December the government (BEIS) published its response to the March 2016 consultation on reform of the Renewable Heat Incentive (RHI). This includes changes to the tariffs and conditions of the domestic and non-domestic RHI schemes. These will apply, according to the response, from spring 20…

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Changes to Renewable Heat Incentive tariffs from 1 January 2017

Posted by Trish O'Flynn on 14 December 2016 at 10:30 am

Changes to Renewable Heat Incentive tariffs from 1 January 2017

On 30 November the government (BEIS) announced reductions to the Renewable Heat Incentive tariffs for certain new domestic and non-domestic installations with applications approved on or after 1 January 2017. The percentage reductions in domestic and non-domestic RHI tariffs are as follows: …

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Heat Pumps: Air source or ground source?

Posted by Aderanti Kudehinbu on 15 November 2016 at 10:30 am

Heat Pumps: Air source or ground source?

Heat pumps are devices that use a small amount of energy to move heat from one place to another. During cold weather they extract heat from outside sources and pump it indoors. This process can be reversed during summer in order to act as an air conditioning system. The heat pump circulates a…

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10 tips to help installers attract and retain customers, as report shows only half of RHI customers satisfied with their chosen installer

Posted by Anna Carlini on 22 March 2016 at 11:05 am

10 tips to help installers attract and retain customers, as report shows only half of RHI customers satisfied with their chosen installer

A recent report from the Department of Energy and Climate Change (DECC) provides some useful tips for installers on attracting new customers and keeping them satisfied. DECC commissioned 46 in-depth phone interviews as part of the evaluation of the Renewable Heat Incentive (RHI). The survey r…

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Is weather compensation worth it?

Posted by Jason Ramsdale on 12 February 2016 at 11:05 am

Is weather compensation worth it?

The weather is the biggest factor in determining how much energy will be required to heat your home. The colder the weather outside, the more energy required to heat your building. The weather outside is constantly changing meaning that equal heat demand changes occur in your home. Establishing h…

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How will the new EU ErP directive impact heat pump RHI?

Posted by Helena Ripley on 26 August 2015 at 11:10 am

How will the new EU ErP directive impact heat pump RHI?

A new EU Directive the ‘Ecodesign of Energy-related Products (ErP) Directive’ will come into force on 26 September 2015. This will affect the eligibility of homeowners with heat pumps to receive payments from the renewable heat incentive (RHI) grant. This directive will set a minimum …

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Green Open Homes: visit for inspiration in spring and autumn

Posted by Gordon Glass on 18 May 2015 at 10:30 am

Green Open Homes: visit for inspiration in spring and autumn

This month is a busy one for Green Open Homes with events all over the country, from West Cornwall to Yorkshire. An estimated total of 200 homes are being opened up this spring for visitors, showcasing both low cost energy efficient improvements and larger more expensive options. Event locations …

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Air source heat pumps vs ground source. Which is best?

Posted by Tasha Kosviner on 22 April 2015 at 3:05 pm

Air source heat pumps vs ground source. Which is best?

Should I get an air source heat pump or a ground source heat pump? Heat pumps take heat from the ground, air or water and use it to heat space and water. They are like a fridge in reverse. The fridge takes heat from the food you put in it, and pumps that into the kitchen, keeping the food cold.…

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DECC launch renewable heat incentive calculator

Posted by Gabby Mallett on 17 April 2015 at 4:30 pm

DECC launch renewable heat incentive calculator

The Department of Energy and Climate Change (DECC) has just launched a new renewable heat incentive calculator.  It is designed to give you an idea of how much you could get in RHI payments if you were to install a renewable heating system. This applies to solar thermal (for hot water) a…

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Biomass boiler vs heat pump : The fight is on!

Posted by Tasha Kosviner on 25 March 2015 at 10:55 am

Biomass boiler vs heat pump : The fight is on!

Domestic biomass installations now outstrip the entire heat pump industry in the UK. But is biomass always better? When might you choose a heat pump instead? We’ve pitted these two titans of the domestic renewable heating world against each other and here’s the fight in full: Rou…

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Thermodynamic panels not eligible for RHI despite new MCS standards

Posted by Cathy Debenham on 20 March 2015 at 10:05 am

Thermodynamic panels not eligible for RHI despite new MCS standards

Standards for thermodynamic panels have now been agreed by the Microgeneration Certification Scheme (MCS). While this means that people installing this technology can be confident that the panels are suitable for use in the UK and meet agreed standards, it does not mean that they will be eligible…

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Heat pumps and hydro electricity: how to get your energy from a river

Posted by Tasha Kosviner on 12 March 2015 at 12:25 pm

Heat pumps and hydro electricity: how to get your energy from a river

When a river runs right past your house, as in Liz and Peter Downs’s case, it makes sense to use that water to heat and power your home. The Downs bought Itteringham Mill, a 1778 Norfolk watermill in 2004 with the intention of turning it into a bed and breakfast with holiday cottages a…

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Is third party ownership a good thing in the domestic RHI?

Posted by Cathy Debenham on 10 March 2015 at 1:10 pm

Is third party ownership a good thing in the domestic RHI?

My husband is a football fan. When I mentioned that the Department of Energy and Climate Change (DECC) is exploring the possibility of third party ownership for the domestic renewable heat incentive (RHI) I didn’t need to explain what it is. He gave an immediate definition: “someone, …

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Changes to regulations for domestic RHI now in force

Posted by Cathy Debenham on 12 February 2015 at 2:08 pm

Changes to regulations for domestic RHI now in force

Rules about the sustainability of biomass fuel and the following changes to the regulations for the domestic Renewable Heat Incentive (RHI) came into force on 5 February 2015. Cooker stoves “Cooker stoves” are biomass stoves with a back boiler that are predominantly designed f…

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Readers' tips of the month - January 2015

Posted by Cathy Debenham on 29 January 2015 at 9:57 am

Readers' tips of the month - January 2015

Mistakes are always one of the best learning opportunities, so we're always grateful when readers share theirs making it possible for the rest of you to get the learning without the pain of getting it wrong first. And pain is what this retired widow from Staffordshire experienced at the h…

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Guidance on acceptable third party finance for RHI available for trade

Posted by Cathy Debenham on 16 January 2015 at 10:24 am

Guidance on acceptable third party finance for RHI available for trade

Do your customers want to install renewable heat, but struggle with the upfront cost? Unlike the feed-in tariff, where rent a roof (FIT) schemes are possible because FIT payments can go to a third party, the rules of the domestic renewable heat incentive (d-RHI) do not currently allow third parti…

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Time is running out for 'legacy' applications to the RHI

Posted by Cathy Debenham on 15 January 2015 at 3:25 pm

If you installed an air source heat pump, ground source heat pump, wood pellet stove, biomass boiler or solar thermal system between 16 July 2009 and 8 April 2014 you may well be eligible to apply for the renewable heat incentive. This is the government's financial incentive to help homeowner…

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Why are people who are eligible for renewable heat incentive failing to apply?

Posted by Cathy Debenham on 28 November 2014 at 3:01 pm

Why are people who are eligible for renewable heat incentive failing to apply?

Have you installed a renewable heating system since 15 July 2009? If so, you are probably eligible to apply for the renewable heat incentive (RHI), a government scheme to encourage take up of air and groundsource heat pumps, solar water heating and biomass stoves and boilers. The scheme, which is…

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MCS strengthens procedures - but will it kill the cowboys?

Posted by Cathy Debenham on 17 November 2014 at 12:10 pm

MCS strengthens procedures - but will it kill the cowboys?

Knowing that your installer (and the product they are installing) is going to do a good job is always important. In a new industry, with unfamiliar products and taxpayers money available to support it, it's even more important.  This is exactly what the Microgeneration Certification …

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Changes to eligibility for domestic renewable heat incentive announced

Posted by Cathy Debenham on 13 November 2014 at 9:54 am

Changes to eligibility for domestic renewable heat incentive announced

Some welcome changes to eligibility for the domestic renewable heat incentive (RHI) were announced this month by the Department of Energy & Climate Change. Subject to parliamentary process and approval of draft regulations they should come into force in spring 2015. Also coming in spring is t…

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Legacy application make up the bulk of first 10,000 RHI accreditations

Posted by Cathy Debenham on 6 November 2014 at 3:22 pm

Legacy application make up the bulk of first 10,000 RHI accreditations

South west England has the most accreditations (1,847) under the new domestic renewable heat incentive (dRHI) according to new statistics from Ofgem. Renewable heat was nearly as popular in Scotland (1,596 accreditations), with south east England next. Not surprisingly London was the region with …

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Readers' tips of the month

Posted by Cathy Debenham on 29 October 2014 at 5:34 pm

Readers' tips of the month

With the clocks going back, I'm kicking off this month's tips with one from House-Saver. "We hang a thick curtain over our draughty french doors during winter months," he writes. "We keep the curtain opened during the day to allow sun light to heat the living room and then …

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How to make a 1920s terrace property warm and energy efficient

Posted by Tasha Kosviner on 26 August 2014 at 10:17 am

How to make a 1920s terrace property warm and energy efficient

Making a leaky 1920s house energy efficient is a daunting prospect. But it was experience renovating their previous home – a barge – that gave Jurgen Huber and Zoe Allen the confidence to take on the task.  "The practical experience I gained of altering, fitting out, and…

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Is my home renovation classed as a self-build for claiming RHI?

Posted by Tasha Kosviner on 18 August 2014 at 8:52 am

Is my home renovation classed as a self-build for claiming RHI?

Q. We have recently renovated and extended a 200-year old cottage into a 4-bed home with an air source heat pump. Prior to our moving in the property was empty for more than two years and uninhabitable.  Do we need a green deal assessment or are we classed as self builders for the p…

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Should I get a green deal assessment before or after I install?

Posted by Tasha Kosviner on 7 August 2014 at 8:52 am

Should I get a green deal assessment before or after I install?

Q. I am looking to install a heat pump and I hope to apply for the renewable heat incentive. I know I need to have green deal assessment but should this be done before or after the heat pump is installed? A. You are right that all renewable heat incentive (RHI) applicants (with the exception …

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My heat pump isn't on Ofgem's product eligibility list. Can I still claim RHI?

Posted by Tasha Kosviner on 16 July 2014 at 10:08 am

My heat pump isn't on Ofgem's product eligibility list. Can I still claim RHI?

Q My heat pump does not appear on Ofgem’s product eligibility list (PEL) for the renewable heat incentive (RHI) and I do not have an MCS certificate for the installation. Can I apply for RHI?  I installed a Stiebel Eltron (WPL 16 AS) ASHP in 2010. It does not appear in the list of…

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Should I recalculate my heat pump's SPF? My renewable heat incentive journey part 2

Posted by Tasha Kosviner on 4 July 2014 at 9:03 am

Should I recalculate my heat pump's SPF? My renewable heat incentive journey part 2

As the owner of an air source heat pump who received a renewable heat premium payment grant prior to 20 May 2013, I am in the second tranche of applicants being invited to apply for the renewable heat incentive.  The date from which the group is eligible to apply – July 9, 2014 &nd…

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Why RHI rules should be changed to incentivise solar thermal stores too

Posted by Stuart Elmes on 25 June 2014 at 10:45 am

Why RHI  rules should be changed to incentivise solar thermal stores too

The domestic Renewable Heat Incentive (RHI) was structured with the deliberate intention that the combination of solar thermal with other renewable heating technologies would be actively encouraged.  The thinking behind this is that solar thermal increases the average operating efficiency of…

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Thermodynamic panels: the UK's first independent test gets underway

Posted by Tom Bradley on 4 June 2014 at 9:40 am

Thermodynamic panels: the UK's first independent test gets underway

Recently there has been an increasing discussion of a new heating technology, known as solar thermodynamic panels (or solar-assisted heat pumps). They are sometimes marketed as a “solar panel that works at night” to quote one manufacturer. Essentially they are a type of air …

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Invaluable advice if you're thinking of installing a heat pump

Posted by Cathy Debenham on 28 May 2014 at 10:22 am

Invaluable advice if you're thinking of installing a heat pump

If you’re considering installing a ground- or an air-source heat pump you should consider the following excellent advice from the Renewable Energy Consumer Code: • make sure you take account of any additional work you need to do, such as drilling a vertical well or preparing a hori…

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Will my solar panels power an air source heat pump?

Posted by Cathy Debenham on 27 May 2014 at 8:54 am

Will my solar panels power an air source heat pump?

Q: I have a 4kW solar PV system on my roof and am thinking of installing an air source heat pump. How much electricity would the solar panels contribute to the cost of running the heat pump? A: At first glance this seems like the ideal combination. You are probably generating more solar elecr…

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Seasonal performance factors and RHI: should I get a reassessment?

Posted by Tasha Kosviner on 9 May 2014 at 9:50 am

Seasonal performance factors and RHI: should I get a reassessment?

You've had a heat pump installed (prior to the launch of the RHI), you've had your green deal assessment, you've got your MCS certificate and you're poised to apply for the government's newly-launched renewable heat incentive (RHI) scheme. But hold on - what's thi…

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How do I get an MCS certificate if my installer went out of business?

Posted by Tasha Kosviner on 30 April 2014 at 10:53 am

How do I get an MCS certificate if my installer went out of business?

The Microgeneration Certification Scheme (MCS) has launched its process for obtaining MCS certificates for homeowners whose installation companies have ceased trading or are no longer MCS certified. The paperwork-intensive process consists of filling in a form with details of yourself, your i…

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Reader's tip of the month - April 2014

Posted by Cathy Debenham on 30 April 2014 at 9:09 am

Reader's tip of the month - April 2014

This month's tip comes from Lehigh51 who has installed solar PV, solar thermal, a ground source heat pump and rainwater harvesting. "Truly everything has worked as well as I could hope and I am very pleased. My expenditure is within acceptable parameters. My electricity bill is …

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Green deal reports and renewable heat incentive: a personal journey

Posted by Tasha Kosviner on 29 April 2014 at 1:07 pm

Green deal reports and renewable heat incentive: a personal journey

If you’re getting a green deal assessment for the purposes of claiming government incentives for your renewable heat system, make sure you have the minimum levels of insulation required first. Unless you’re planning to use a green deal loan to fund the work, or hoping you might qu…

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How do I apply for the domestic renewable heat incentive?

Posted by Tasha Kosviner on 14 April 2014 at 2:20 pm

How do I apply for the domestic renewable heat incentive?

Now the domestic renewable heat incentive is finally live, anyone with an eligible installation will be champing at the bit to get started. To apply, you need three pieces of documentation: Your MCS certificate (supplied by your installer at the time of commissioning); Your green deal…

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Is this the end of the air source heat pump loophole?

Posted by Alistair Pilcher on 7 April 2014 at 9:15 am

Is this the end of the air source heat pump loophole?

Meeting the new energy efficiency and CO2 emissions targets for the construction of new buildings will become tougher when the latest revision to the Building Regulations soon comes into force. This should close a loophole where builders could adopt a limiting (worst case) thermal fabric app…

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My heat pump heats two properties, is it eligible for domestic RHI?

Posted by Cathy Debenham on 2 April 2014 at 10:03 am

My heat pump heats two properties, is it eligible for domestic RHI?

Q: My property is made up of the principal property that I live in (The Mill), it also has a flat that I rent out (Mill Studio) that is part of the same building but has a separate entrance, electric meter and council tax bill. I fitted 1 x Nibe F1245 water source heat pump replacing 2 x oil boil…

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Comedy club uses heat from the kitchen to produce hot water

Posted by Tasha Kosviner on 31 March 2014 at 8:24 am

Comedy club uses heat from the kitchen to produce hot water

Anyone who has ever worked in a commercial kitchen knows how temperatures can soar. Throwing open the windows and sticking on the fans is the obvious solution. But now an innovative new technology has been developed which harnesses the heat kicked out by stoves and fridges to heat water. …

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I am off-gas and on benefits. Can I get help replacing broken storage heaters?

Posted by Tasha Kosviner on 26 March 2014 at 8:41 am

I am off-gas and on benefits. Can I get help replacing broken storage heaters?

Q. My mother is an 87-year old who lives by herself in her own home and is in receipt of pension credit. Her home is run on electricity and she has three storage heaters. One of these broke a while ago and last week the one in the front room broke. She now has just one working heater wh…

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Are heated skirting boards any good for use with heat pumps?

Posted by Tasha Kosviner on 24 March 2014 at 9:13 am

Are heated skirting boards any good for use with heat pumps?

Radiators or underfloor heating? That has been the traditional question asked among those considering installing an air or ground source heat pump. But should we consider a new contender on the market? A study in Sweden has found that heated skirting boards are significantly more effectiv…

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Are new build houses eligible for the RHI?

Posted by Cathy Debenham on 10 March 2014 at 9:16 am

Are new build houses eligible for the RHI?

Q: We moved into our new home last April, a new build, can we claim for the RHI as we have an air source heat pump. A: Well, it depends. If you are a self builder, then the answer is yes. You can claim the domestic renewable heat incentive (RHI). You will need an energy performance certi…

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What is the real inflation rate for energy?

Posted by Stuart Elmes on 25 February 2014 at 12:01 pm

What is the real inflation rate for energy?

There’s been a lot of coverage of increasing energy bills in the media in recent months.  Also I’ve been doing a bit of thinking about the return on investment for solar thermal under the imminent domestic renewable heat incentive. (I like writing ‘imminent’ inst…

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Air-to air or air-to-water: which air source heat pump is best?

Posted by Graham Hazell on 13 February 2014 at 1:26 pm

Air-to air or air-to-water: which air source heat pump is best?

Air source heat pumps, which have been used extensively for many decades, are an increasingly popular form of heating. They take the heat from ambient, external air. There are two main choices for emitting the heat from an air source heat pump: via air - warm air is blown within …

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There is risk in being an early adopter of renewable energy

Posted by Cathy Debenham on 10 February 2014 at 9:01 am

There is risk in being an early adopter of renewable energy

Q: We installed a ground source heat pump about 4 years ago and have been waiting to claim RHI to help pay for the cost. We now may have to sell our house before we can claim, and certainly before the full payment has been made. It seems wrong that the benefit passes to the new owner when we…

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New MCS standards for renewable heat installers

Posted by Tasha Kosviner on 3 February 2014 at 10:28 am

New MCS standards for renewable heat installers

Installers of renewable energy technologies will have to complete a compliance certificate for every installation, in order to meet new standards set out by the Microgeneration Certification Scheme (MCS). The certificate is part of a range of measures the MCS has introduced in preparation for…

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Is there such a thing as ground-to-air heat pump and would you recommend one?

Posted by Tasha Kosviner on 27 January 2014 at 9:50 am

Is there such a thing as ground-to-air heat pump and would you recommend one?

Q. Is it possible to have a ground source heat pump system linked to air vents rather than radiators and if so, would this be a less expensive option than installing radiators? A. The system you describe is known as a ground-to-air heat pump, as opposed to a ground to water (or 'wet')…

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How to write a brief for a renewable heat system

Posted by Tasha Kosviner on 22 January 2014 at 9:05 am

How to write a brief for a renewable heat system

Once you have decided that you’d like to install a renewable heating system in your home or office, it’s a good idea to write a brief for the project. Rather than detailing all the various technologies you’ll need, a brief is designed to set out your expectations and can be a be…

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Renewable heat premium payment deadline approaching

Posted by Tasha Kosviner on 17 January 2014 at 10:34 am

Renewable heat premium payment deadline approaching

If you’re considering installing a renewable heating system in your home and would like to take advantage of a one-off grant to help with the cost, then now’s the time to act. The deadline for applying for a renewable heat premium payment (RHPP) is fast approaching with all applic…

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Ground source heat pump warms guests at country house hotel

Posted by Tasha Kosviner on 16 December 2013 at 10:10 am

Ground source heat pump warms guests at country house hotel

A newly-installed ground source heat pump is set to save an Elizabethan country house hotel £10,000 a year.  Historic Soulton Hall in Wem, Shropshire, has replaced traditional fossil fuels with two Stiebel Eltron ground source heat pumps, generating green hot water and heating for …

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When can I apply to the domestic RHI?

Posted by Cathy Debenham on 9 December 2013 at 10:30 am

When can I apply to the domestic RHI?

People with renewable heating systems installed since 15 July 2009 may have to wait to apply for the domestic renewable heat incentive (RHI). Last week the government announced its plans to phase the process.  Phasing will enable those who installed without support from the renewable hea…

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Can I pre-register for domestic RHI?

Posted by Tasha Kosviner on 20 November 2013 at 9:26 am

Can I pre-register for domestic RHI?

Q. We have had solar thermal and a biomass heating system installed. I have two questions: firstly can we pre-register for the domestic renewable heat incentive, and secondly I have read that you need to be in full time employment to qualify, which seems a bit bizarre. Is that true? A. Provid…

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Tansor village hall: a case study of a solar-powered heat pump in a community building

Posted by Tasha Kosviner on 24 October 2013 at 9:27 am

Tansor village hall: a case study of a solar-powered heat pump in a community building

A village hall which is using a lottery grant to install an air source heat pump partially powered by solar panels has come up with a way of still qualifying for the government's feed-in tarrif (FiTs). Under FiT rules, installations that are funded by public money, includin…

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MCS deadline for registering legacy renewable heat systems - an update

Posted by Cathy Debenham on 21 October 2013 at 10:29 am

MCS deadline for registering legacy renewable heat systems - an update

Tomorrow is the deadline by which people who have installed a renewable heating system since 15 July 2009 must ensure that it is registered with the Microgeneration Certification Scheme (MCS) if they want to receive the renewable heat incentive. Yet, a quick check this morning reveals th…

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Do self builders need a green deal assessment to claim RHI?

Posted by Cathy Debenham on 17 October 2013 at 9:55 am

Do self builders need a green deal assessment to claim RHI?

Q: We have had a single new house built for us this year and have an air source heat pump. Naturally we would like to apply for the renewable heat incentive when it comes in next year. You said in your blog of 25 July 2013 that you need a green deal assessment to apply unless you are a self-build…

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Volunteers wanted for trial of heat pump controls

Posted by Tasha Kosviner on 15 October 2013 at 11:17 am

Volunteers wanted for trial of heat pump controls

Is it just me, or are heat pumps the most confusing of beasts? I had a Daikin Altherma air source heat pump installed by an MCS registered installer in 2012 to replace a hopelesssly out-of-date storage heating system in a 1950s chalet-style house. Last winter we received electricity bills…

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Will installing a wind turbine affect my RHI application for a heat pump?

Posted by Cathy Debenham on 4 October 2013 at 9:36 am

Will installing a wind turbine affect my RHI application for a heat pump?

Q: We have installed a ground source heat pump and will be applying for the renewable heat incentive (RHI). We are now considering installing a wind turbine. How will this interact with our heat pump RHI application, if at all? Our EPC rating will improve with a turbine and as I understand it RHI…

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Beat the RHI deadline for MCS registration of renewable heat systems

Posted by Tasha Kosviner on 2 October 2013 at 3:31 pm

Beat the RHI deadline for MCS registration of renewable heat systems

If your renewable heating system is not registered with the microgeneration certification scheme (MCS), there are still a few things you can do, to ensure that you meet the 22 October 2013 deadline for registration.  If your heating system is not registered on the MCS installation databa…

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How is the seasonal performance factor of my heat pump calculated?

Posted by Graham Hazell on 26 September 2013 at 9:09 am

How is the seasonal performance factor of my heat pump calculated?

Q: I am still unclear how the seasonal performance factor (SPF) of my heat pump is calculated for the purposes of making tariff payments under forthcoming domestic renewable heat incentive (RHI). Is it simply based on the manufacturers' claims or is there some way of calculating it from real …

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Deadline to register your renewable heat installation looming

Posted by Tasha Kosviner on 24 September 2013 at 9:15 am

Deadline to register your renewable heat installation looming

The government has issued a deadline for registering renewable heat installations under the microgeneration certification scheme (MSC). The deadline, of 4pm on October 22, 2013, applies to all renewable heat installations made since July 15, 2009. If you believe your installation has yet …

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How do I claim the domestic renewable heat incentive?

Posted by Cathy Debenham on 16 September 2013 at 9:08 am

How do I claim the domestic renewable heat incentive?

Q: I have recently installed an air to heat system in my home. What do I have to do to claim the renewable heat incentive payment? A: First, I'm assuming you are talking about an air to water heat pump. If you have an air-to-air heat pump then you are not eligible for the renewable heat i…

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The UK's most energy-efficient period properties throw open their doors

Posted by Tasha Kosviner on 11 September 2013 at 11:01 am

The UK's most energy-efficient period properties throw open their doors

If you’re considering refurbishing your energy-guzzling period property to make it run more efficiently then here’s a chance to see how others have done it first. SuperHomes Open Days is a countrywide open house scheme where owners of 54 older, retrofitted homes throw open their d…

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What is the greenest way of heating our new studio?

Posted by Cathy Debenham on 10 September 2013 at 10:46 am

What is the greenest way of heating our new studio?

Q: We have planning permission to replace existing garage with a fully insulated garage and studio. What is the greenest / most efficient way of providing hot water and heating to the studio? We have mains electricity; access to plenty of wood; oil (which we use as sparingly as possible); and…

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Can I get the domestic RHI if I'm replacing a renewable heating system?

Posted by Cathy Debenham on 6 September 2013 at 9:43 am

Can I get the domestic RHI if I'm replacing a renewable heating system?

Q: I installed a stove type pellet boiler back in 2006 - which is great. But last year we extended our house and the boiler is probably a bit on the small side. Also as we get older we will find it easier to have a boiler with a bulk store. If I install a bigger output boiler now will I qualify f…

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Heat pumps can be an efficient alternative to electric, oil or LPG heating says EST field trial

Posted by Cathy Debenham on 15 August 2013 at 9:12 am

Heat pumps can be an efficient alternative to electric, oil or LPG heating says EST field trial

Heat pumps can provide an efficient alternative heat source for householders currently heating using electricity, oil, LPG or solid fuel according to phase two of the Energy Saving Trust's (EST) heat pump field trial.  Well installed heat pumps, in homes which have adequate insu…

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Why buyers should take care when investing in renewable heat

Posted by Cathy Debenham on 22 July 2013 at 9:41 am

Why buyers should take care when investing in renewable heat

Let me set my stall out: I'm a fan of renewable heat technologies if they are installed well in suitable buildings. I'm also delighted that details of the domestic renewable heat incentive scheme has finally been announced, and that the rates are higher than expected.  But, and g…

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7 questions to ask a heat pump installer before you buy

Posted by Graham Hazell on 19 July 2013 at 11:52 am

7 questions to ask a heat pump installer before you buy

With the details of the domestic renewable heat incentive now published, and renewable heat premium payments still available to help with the upfront cost, now is a good time to install renewable heat. But make sure you choose a good installer. Here are seven questions to help you choose a he…

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What the domestic Renewable Heat Incentive means for heat pumps

Posted by Chris Davis on 15 July 2013 at 11:06 am

What the domestic Renewable Heat Incentive means for heat pumps

After nearly 4 years of waiting, the Government has finally confirmed the details of the Renewable Heat Incentive (RHI) for domestic properties.  Cathy has already summarised the key details in her blog. This is great news for home owners looking to install renewable heating systems…

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Details of the domestic renewable heat incentive finally announced

Posted by Cathy Debenham on 12 July 2013 at 10:25 am

After several delays, the details of the renewable heat incentive, originally announced in July 2010 have finally been announced. Its aim is to encourage the uptake of renewable heat technologies to cut carbon, help meet the renewables targets and to save money on energy bills. Who can apply …

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Check you are eligible for RHI before installing renewable heat

Posted by Cathy Debenham on 11 July 2013 at 10:10 am

Check you are eligible for RHI before installing renewable heat

The renewable heat premium payments (RHPP) for biomass boilers and heat pumps are only available for properties that are off the mains gas network. Until the announcement on the full domestic renewable heat incentive (RHI) is made this summer we won't know if this will also be the case for th…

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Risks identified for buyers as two-tier market for heat pumps emerges

Posted by John Barker-Brown on 14 June 2013 at 10:04 am

Risks identified for buyers as two-tier market for heat pumps emerges

With the uncertainty caused by another delay to the domestic renewable heat incentive (RHI) scheme, we are seeing a two-tier market for heat pumps emerge, where some people are opting for the cheaper option of using products and installers who are not accredited under the microgeneration certific…

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Is the UK low carbon heat industry ready to deliver? A case study of a customer who can't buy a heat pump

Posted by Jennifer Arran on 10 June 2013 at 9:16 am

Is the UK low carbon heat industry ready to deliver? A case study of a customer who can't buy a heat pump

Is the renewable heat industry ready to deliver? This critical question was raised by the most recent interviews in our on-going research program. The Microgen Insight Service carried out in-depth phone interviews with owner-occupiers on- and off-gas, including a a small number of …

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Which is the the best heat pump?

Posted by Graham Hazell on 30 May 2013 at 11:47 am

Which is the the best heat pump?

“Which is the best heat pump, in your view?” is the question I’m most frequently asked by callers to the Heat Pump Association's information desk. I usually turn the question back and ask them, in their view, which is the best car. Straight away they ask “what do you w…

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DECC doubles upfront grants for renewable heat technologies

Posted by Cathy Debenham on 20 May 2013 at 3:32 pm

More help with the upfront cost of installing renewable heat is now available as the Department of Energy and Climate Change announces a doubling of the Renewable Heat Premium Payments. These money off vouchers have been increased to: £2,300 for ground source heat pumps £2,0…

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How do I find the best performing heat pump?

Posted by Cathy Debenham on 17 May 2013 at 9:35 am

How do I find the best performing heat pump?

Q: There is a great deal of information on the Internet as regards heat pumps but no information about recommended manufacturers of ground source heat pumps. Please can you help me. I would like someone to recommend which ground source heat pump ie Kensa, Nibe Danfoss performs best. A: Good q…

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Heat pumps a no brainer says property developer

Posted by Cathy Debenham on 7 May 2013 at 9:41 am

Heat pumps a no brainer says property developer

A property developer in North Wales has been so impressed with the amount of energy that air source heat pumps have saved his properties over the past few years that he installed one in his own home in Colwyn Bay. "I first started using ground and air source heat pumps in my development…

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Readers tips of the month - April 2013

Posted by Cathy Debenham on 29 April 2013 at 9:30 am

Readers tips of the month - April 2013

"Most cost effective measures are to improve thermal performance of property with good insulation generally," says architect Clinton. "But watch natural ventilation/airtightness to avoid condensation problems unless you are installing a mechanical ventilation system. Use as man…

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When will I get renewable heat incentive (RHI) payments?

Posted by Cathy Debenham on 22 April 2013 at 9:17 am

When will I get renewable heat incentive (RHI) payments?

A: As RHI (renewable heat incentive) payments have been delayed again till Spring 2014, do we have to wait till then to get our payment? So there will be no payment in 2013 then? Q: If you are what the government describes as a 'legacy' applicant, which means someone who has installed…

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Key things to consider before installing a heat pump

Posted by John Barker-Brown on 16 April 2013 at 8:52 am

Key things to consider before installing a heat pump

Unlike fossil fuel boilers, heat pumps are unforgiving when it comes to sizing. With a fossil fuel boiler increasing the size to add a safety factor is generally acceptable. The cost difference between a 20kW or 30kW boiler is not large. However, increasing the size of a ground source heat pump c…

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Special offer: Heat pump manufacturer offers free site survey, system design and handover meeting

Posted by Cathy Debenham on 28 March 2013 at 9:11 am

Special offer: Heat pump manufacturer offers free site survey, system design and handover meeting

Sponsored blog post For over 80 years in 72 countries Stiebel Eltron has been one of the world’s leading manufacturers of green heating technologies such as heat pumps, solar panels and energy saving water heaters. With a wide range of products designed for the UK market we provide unma…

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Manufacturers can play a key role in preventing problems with heat pumps

Posted by Cathy Debenham on 27 March 2013 at 10:13 am

Manufacturers can play a key role in preventing problems with heat pumps

Heat pumps can be a great way of heating a building if (and it's a big if) they are designed, specified, installed and commissioned right, and the building owner is given good, clear instructions about how to use the system and what the different controls do. The reason I say it's a b…

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Why heat pumps are ideal for underfloor heating

Posted by Jason Hobbins on 22 March 2013 at 9:46 am

Why heat pumps are ideal for underfloor heating


Heat pumps are the most efficient way to power wet underfloor heating systems. Unlike a gas or oil boiler, which heats water to between 65 and 85°C, a heat pump generates hot water at around 40 degrees.  Walking on a 65°C floor will scald your feet and crack your floor coverin…

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How our air to air heat pump keeps the house warm and bills low

Posted by Keith Searle on 5 March 2013 at 9:04 am

How our air to air heat pump keeps the house warm and bills low

Our entire house has been nice and warm since we installed our air source heat pump in December 2011, and on the odd hot day in the summer it has cooled the living room. We leave it switched on 24hrs per day and it keeps on blowing out warm air at about 35 degrees-even on below freezing…

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Air source heat pumps keep hotel guests happy, warm, and intrigued

Posted by NicoleYouGen on 12 February 2013 at 9:02 am

Air source heat pumps keep hotel guests happy, warm, and intrigued

An air source heat pump system has proven a positive alternative to LPG at Wirral’s award winning Mere Brook House Hotel. Mere Brook  is a converted Edwardian country house which offers high quality bed and breakfast and facilities. When they were renovating their premises, the owners …

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What to do if your ground source heat pump costs too much to run

Posted by Jason Hobbins on 8 February 2013 at 10:22 am

What to do if your ground source heat pump costs too much to run

Q. Hi wondering if anyone else has had huge problems with a ground source heat pump. Had mine installed when the house was built and have no end of problems......largest and most pressing is the fact that it is costing me around £20 per day to run - which is astronomical and unsustainable! …

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Readers tips of the month - January 2013

Posted by Cathy Debenham on 29 January 2013 at 10:35 am

Readers tips of the month - January 2013

Keeping warm is a bit of a theme for this month's tips. Mark Griffiths lives in a solid-wall 1930s house and works from home. He writes: " we brought in a company to help us dry-line part of our home office - an upstairs bedroom. We lost ten inches of space, but gained immensely in heat …

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Thermodynamic panels: your questions answered

Posted by Cathy Debenham on 11 January 2013 at 9:12 am

Thermodynamic panels: your questions answered

This blog was updated in February 2014, 6 November 2014 and 10 March 2015. If someone told you that there's a new solar panel that could heat your hot water 24 hours a day, 365 days a year come rain, shine or snow, would you believe them? It sounds too good to be true, and that always mak…

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I'm on mains gas, am I eligible for the domestic RHI?

Posted by Cathy Debenham on 1 November 2012 at 3:06 pm

I'm on mains gas, am I eligible for the domestic RHI?

Q: I am very interested in the RHI (renewable heat incentive) but a little confused! I would love a biomass boiler or air source heat pump but I have read somewhere that if I have gas and disconnect from the gas mains I still can't claim RHI? Is this true? Are biomass and ASHP RHI payments only for …

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What the domestic RHI means for air source heat pumps

Posted by Chris Davis on 11 October 2012 at 9:40 am

What the domestic RHI means for air source heat pumps

The long awaited details of how the Government will support householders who install renewable heating systems have been announced at last. The RHI (renewable heat incentive) is due to be introduced in the summer of 2013, and one of the answers most keenly awaited has been whether or not air sou…

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An introduction to water source heat pumps and how they work

Posted by John Barker-Brown on 12 July 2012 at 9:36 am

An introduction to water source heat pumps and how they work

The majority of heat pumps sold within the UK are either ground source or air source. However, water is another source of energy which can sometimes be used for heat pumps. Using water as your energy source has a number of advantages when compared to air or ground source: • The…

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Sizing a heat pump correctly is vital for good performance

Posted by Gabriel Wondrausch on 9 July 2012 at 9:17 am

Sizing a heat pump correctly is vital for good performance

Unlike a conventional fossil fuel boiler it is essential that a heat pump is sized accurately to meet the heat demand of the property. The reason for this is because over-sizing will significantly increase the capital cost for little operational savings. It will also mean that the heat pump oper…

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Finance is available for businesses to install renewable heat

Posted by Mark Henderson on 28 June 2012 at 10:31 am

Finance is available for businesses to install renewable heat

Finance for the up-front costs of installing renewable heat technologies is now available for businesses and other organisations thanks to a new collaboration between The Carbon Trust and Siemens. The Energy Efficiency Financing (EEF) scheme offers low-cost leases, loans and other financing opti…

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Air source heat pumps make sense without the RHI!

Posted by Chris Davis on 18 June 2012 at 9:09 am

Air source heat pumps make sense without the RHI!

The delay of the domestic portion of the renewable heat incentive (RHI) to summer 2013 may have been disappointing for some customers looking for this as a call to action to upgrade their ageing heating systems. However, with oil prices continuing to rise, increasingly the financial argument for…

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Readers' renewable energy tips of the month

Posted by Cathy Debenham on 24 May 2012 at 12:02 pm

Readers' renewable energy tips of the month

We love reading your stories and tips of what works (and doesn't work) for you. Here are this month's favourites: Where you site your air source heat pump is important, as this succinct message from Lizlaw confirms: "Our heat pump warms the house and water consistently, reliably and saves us m…

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New MCS heat pump standard should improve performance

Posted by Chris Davis on 30 April 2012 at 11:11 am

New MCS heat pump standard should improve performance

Are you thinking of installing a heat pump? Well there’s good news for householders and businesses in the shape of new standards to improve the performance of heat pump installations. Snappily titled “MIS3005 v3.1a”, the new standard affects all new heat pump systems since 1 March 2012 and …

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A cautionary tale of a heat pump gone wrong

Posted by Cathy Debenham on 13 April 2012 at 9:06 am

A cautionary tale of a heat pump gone wrong

"Our Peak district farm offers self-catering accommodation in eco-renovated barns," write Paul & Elspeth Walker. "When we recently developed an adjoining building as a venue for courses and public events it was an opportunity to enhance the alternative energy potential of the site. "So in 20…

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Renewable Heat Premium Payments scheme is extended; RHI delayed

Posted by Cathy Debenham on 27 March 2012 at 10:35 am

Renewable Heat Premium Payments scheme is extended; RHI delayed

The domestic renewable heat incentive (RHI) remains elusive, as the government announced a second phase of the renewable heat premium payments (RHPP) scheme yesterday. The domestic RHI, which will reward people who switch to renewable sources of heat with regular payments for and anticipated …

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