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Do I need two inverters or one for my solar PV panels?

Posted by Cliff Wilson on 20 May 2015 at 10:30 am

Do I need two inverters or one for my solar PV panels?

Question: I have had a quote for PV with 1.75kWp on my south facing roof and 2.25kWp on my west facing roof.  I wanted to use the full 4kWp if at all possible to get the most FiT.  What I wanted to know was about the inverter.  My installer has only quoted for one inverter, but a f…

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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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Private Rented Sector Energy Efficiency Regulations: what they mean for tenants

Posted by Alex Steeland on 15 May 2015 at 11:15 am

Private Rented Sector Energy Efficiency Regulations: what they mean for tenants

The private rented sector makes up 18 percent of the total housing stock and contains some of the worst maintained properties in the country, with 1 in 10 privately rented domestic properties falling below EPC band E. The barriers to overcoming this problem are particularly challenging, given the…

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New lithium battery technology to store energy from solar PV panels

Posted by Gordon Glass on 13 May 2015 at 10:30 am

New lithium battery technology to store energy from solar PV panels

A houseowner in Lewes has become one of the first in the area to use state-of-the-art lithium battery technology to store energy from solar PV panels. Jill Goulder has installed a lithium battery storage system linked to her solar PV panels. These recharge during sunlight hours and provide po…

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Top tips for setting up a community solar PV project

Posted by Alex Steeland on 11 May 2015 at 10:15 am

Top tips for setting up a community solar PV project

Have you ever wondered how successful community solar PV projects started out? What if you could pick a social entrepreneur’s brain to find out exactly what was involved and the lessons they learned along the way? Well, lucky for you, a new series of action packs has just been launched whic…

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Fuel poor in Scotland should see more support in September 2015

Posted by Gabby Mallett on 8 May 2015 at 4:05 pm

Fuel poor in Scotland should see more support in September 2015

A new scheme has been announced to support those in Fuel Poverty living in Scotland. Whilst the details are yet to be announced the £224 million over seven years is anticipated to help as many as 28,000 fuel poor or vulnerable households. The scheme will provide installations of insulat…

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Can you have both cavity wall insulation and external or internal wall insulation?

Posted by Tasha Kosviner on 7 May 2015 at 9:35 am

Can you have both cavity wall insulation and external or internal wall insulation?

Got a cavity wall? Fill it. Got a solid wall? Then add internal or external wall insulation. This is the standard advice for people looking make their houses snugger and more energy efficient. But there are those who go one step further. Having filled the cavities in his mid-century detac…

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Could new batteries take you off grid?

Posted by Gabby Mallett on 5 May 2015 at 11:05 am

Could new batteries take you off grid?

For many years we have wondered about the problem of storing our PV generation.  In fact many customers install PV, thinking that they may be protecting themselves from future power cuts, without realising that the grid is required for their system to function. A new development from Tes…

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How far could more energy efficient windows reduce energy use in existing homes by 2050?

Posted by Federico Seguro on 27 April 2015 at 12:15 pm

How far could more energy efficient windows reduce energy use in existing homes by 2050?

There is a common perception that glass is the weakest point of the building fabric, where heat loss is more likely to occur. As a result, there has been a tendency to minimise the transparent envelope of buildings, especially in cold climates where the building energy demand for space heating is…

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How do I know if my solar panels are working correctly?

Posted by Tasha Kosviner on 24 April 2015 at 4:10 pm

How do I know if my solar panels are working correctly?

1. Keep an eye on your generation meter   Check your generation meter once a week and keep a record of the figure. Your meter should clock up energy generation every day, even in dull weather. Keeping a regular eye on it will help you notice any variation over time that doesn’t seem …

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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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Election update - energy efficiency off the media radar?

Posted by Gabby Mallett on 20 April 2015 at 3:30 pm

Election update - energy efficiency off the media radar?

How are the political parties going to promote energy efficiency, alleviate fuel poverty or increase renewable energy generation?  Are you interested in finding out before you vote on 7th May? What do you think about the Green party’s commitment to a nationwide retrofit insulation…

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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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Draughty house? What an airtightness test can tell you

Posted by Gabby Mallett on 17 April 2015 at 12:30 pm

Draughty house? What an airtightness test can tell you

What does an airtightness test involve? I recently had an air tightness test done on my home. The goal was to get a good idea of where my house may be leaking air - especially when the heating is on. The conventional blower door test was used.  This requires a large fan to be placed…

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Solar power in a conservation area: how solar slate tiles pleased the planners

Posted by Tasha Kosviner on 15 April 2015 at 2:15 pm

Solar power in a conservation area: how solar slate tiles pleased the planners

Whenever I see a petition designed to get solar panels removed from village roofs, I get a little twitchy. Not only is this, in my view, the worst kind of nimbyism, these petitions invariably cite the ugliness of the panels as a reason for their removal. How unsightly, I wonder, will these vi…

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Been offered a free biomass boiler? Proceed with caution, advises Ofgem

Posted by Tasha Kosviner on 9 April 2015 at 2:35 pm

Been offered a free biomass boiler? Proceed with caution, advises Ofgem

Have you been approached by someone offering to install a free biomass boiler in your house? Is this an offer that seems too good to be true?  As the Department of Energy and Climate Change continues to work out how to regulate so called third party ownership under the Renewable…

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Home energy assessments: how can we make them more useful?

Posted by Alex Steeland on 30 March 2015 at 10:45 am

Home energy assessments: how can we make them more useful?

Accessing trusted and tailored advice on the full range of energy improving refurbishment options available can be far from easy. In partnership with Carbon Co-op, URBED and OpenEnergyMonitor, the National Energy Foundation is developing My Home Energy Planner, a tool to provide accurate, compreh…

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What questions should you ask when comparing solar PV quotes?

Posted by Tasha Kosviner on 30 March 2015 at 9:55 am

What questions should you ask when comparing solar PV quotes?

You’ve got a stack of quotes for solar PV but without the technical know-how it can be very hard to figure out which one is best. Following on from our blog about what should be included in your quote, we’ve come up with a list of questions you can ask to help you to sort the wheat fr…

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Green Deal Home Improvement Fund runs out again!

Posted by NEF Gordon on 27 March 2015 at 5:55 pm

The latest release of Government money to fund home improvements via the Green Deal has once again run out of money.  The finance is released on a quarterly basis with this release of £70million opening on 16 March 2015. Whilst this is a great display of how popular the scheme is, …

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West Solent Solar: community at the heart of local energy project

Posted by Tasha Kosviner on 27 March 2015 at 12:20 pm

West Solent Solar: community at the heart of local energy project

On the south coast of England, on a patch of land facing the Isle of Wight and the English Channel beyond, a sea breeze blows, cooling a solar array. Not everyone knows this but cool conditions improve a solar panel output. This is because electrons flow faster in cooler temperatures so a hig…

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