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Existing generators angry at feed-in cuts to income

Posted by Cathy Debenham on 15 September 2009 at 8:32 am

Existing generators angry at feed-in cuts to income

Feed-in tariffs are designed to incentivise people to invest in renewable sources of energy generation. Yet, the government's proposals will give much lower rates to existing microgenerators, leading to a cut in income for many. This seems a perverse move from government. The numbers of micro wi…

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Controlling solar thermal systems

Posted by Gabriel Wondrausch on 10 September 2009 at 9:43 am

Controlling solar thermal systems

The controllers used in solar thermal systems come in many different shapes and sizes and offer a variety of different options. The most basic controllers just have a differential control - this activates the solar pump when the temperature at the sensor on the collector is at a higher temperature t…

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Warm Front leaves many households cold

Posted by Cathy Debenham on 26 August 2009 at 2:29 pm

Warm Front leaves many households cold

The Warm Front scheme may be failing the poorest and most vulnerable households according to a report from the Public Accounts Committee published last month. Warm Front is meant to  improve energy efficiency and reduce fuel poverty through installing heating and insulation in eligible house…

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Wind turbines: is vertical or horizontal best?

Posted by Graham Eastwick on 24 August 2009 at 12:05 pm

Wind turbines: is vertical or horizontal best?

There are two main categories of small wind turbines you will see as you travel around the UK today. Horizontal axis turbines look like traditional wind turbines and typically have two or three blades. Vertical axis turbines come in a number of designs, a spiral or some paddles blowing around in …

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The case for secondary double glazing

Posted by Tim Pullen on 21 August 2009 at 12:08 pm

The case for secondary double glazing

I recently helped a lady refurbishing a typical 1960s three-bedroom semi with energy efficiency issues. A quick heat loss calculation gave a peak heat load of 8.5kW which should have equated to a use of about 10,000kWh of gas per year. Her actual gas consumption was 15,000kWh p.a. which was used…

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Solutions to common rainwater harvesting problems

Posted by Barry Nutley on 19 August 2009 at 2:30 pm

Solutions to common rainwater harvesting problems

This months blog offers solution to some of the possible problems people with rainwater harvesting systems may encounter. Some may appear obvious, but... 1) Toilet cisterns do not refill after flushing. i. Possible power failure to pump. Check power supply is OK.ii. Pressure switch fail…

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Off-grid versus on-grid microgeneration in practice

Posted by Matthew Rhodes on 17 August 2009 at 11:57 am

Off-grid versus on-grid microgeneration in practice

I really needed a holiday this year. So when we arrived at the holiday cottage we had rented in Orkney and saw the 6kW wind turbine outside my heart sank a little. We had accidentally opted for two weeks of off-grid existence – and slightly dodgily designed off-grid existence at that – with only…

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Feed-in tariffs are not fair to renewable energy pioneers

Posted by Cathy Debenham on 14 August 2009 at 9:17 am

Feed-in tariffs are not fair to renewable energy pioneers

Renewable energy pioneers have been dealt a dismal hand by DECC's proposed rates for the feed-in tariff. Existing microgenerators (whose installation has been accredited under the Renewable Obligation) will be automatically transferred to the feed-in tariff on a rate of 9p per kWh (kilowatt hours)…

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Welsh ease planning rules for renewable energy

Posted by Cathy Debenham on 12 August 2009 at 9:40 am

Welsh ease planning rules for renewable energy

Welsh planning rules for domestic renewable energy installations have been changed to make it easier for homeowners to generate their own heat and electricity. Following Scotland's lead, the Welsh Assembly has announced new regulations which mean that some microgeneration technologies will no lon…

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Solar panels have never been so attractive

Posted by Chris Rudge on 10 August 2009 at 10:50 am

Solar panels have never been so attractive

With the feed-in tariff due to start in April 2010 (after a short consultation period to October) the benefits of installing a solar photovoltaic (PV) system on our houses before the end of the 2009 are probably better than we will ever have again. Simply put, if you have a PV installation befor…

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Will feed in tariffs change the market?

Posted by Matthew Rhodes on 7 August 2009 at 9:03 am

Will feed in tariffs change the market?

The announcement by the Government last month of proposed feed-in tariffs (FiTs) for renewables from next April marks a fundamental change in the way small scale renewables are incentivised in the UK, and is long overdue. There is no question that feed-in tariffs are the right mechanism to use. …

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Measure the wind before you install a turbine

Posted by Cathy Debenham on 5 August 2009 at 9:08 am

Measure the wind before you install a turbine

Product and installation standards for domestic wind turbines are needed, as are improved wind speed prediction and better site assessments. These are some of the key conclusions of the Energy Saving Trust's microwind research published in July. On measuring the wind speed, EST recommends that, …

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Siting your PV panels

Posted by Cathy Debenham on 3 August 2009 at 3:58 pm

Siting your PV panels

When buying photovoltaic (PV) panels to generate electricity for their home, most people put them on the roof. However, this isn't the only place, and may not be the one that gives the best results. Below is John Smith's story about his decision to site his solar panels in the corner of a field…

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What is the best solar hot water panel for a small space?

Posted by Gabriel Wondrausch on 31 July 2009 at 8:47 am

What is the best solar hot water panel for a small space?

Question from YouGen user: I have a 7 year old Solartwin panel on my roof which I believe is performing poorly and is not metered. The company say that the harder water is likely to be too much for the panel and that it needs an indirect panel. Thus I feel I need to replace it. It is a landscape sha…

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Dealing with silt in your rainwater harvesting system

Posted by Barry Nutley on 29 July 2009 at 4:13 pm

Dealing with silt in your rainwater harvesting system

Over time, silt will build up at the bottom of a rainwater tank. Imagine you have a bucket of mud and water. If you leave it, the mud will settle at the bottom leaving clear water at the top. If you then empty another bucket of water straight in, the pressure of this water stirs up the mud, making t…

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Old homes can be energy efficient: visit a superhome and be inspired

Posted by Cathy Debenham on 27 July 2009 at 9:08 am

Old homes can be energy efficient: visit a superhome and be inspired

Old homes tend to be the worst offenders when it comes to leaking hot air out into the atmosphere. This means higher than average energy bills, and correspondingly high carbon emissions. Often labelled 'hard to treat', older homes can be more complicated when it comes to installing energy eff…

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Is your wood fuel up to standard?

Posted by Cathy Debenham on 24 July 2009 at 10:03 am

Is your wood fuel up to standard?

A log's a log isn't it? Well, not if you want it to burn well it isn't. As with all woodfuel, the efficiency with which it burns depends greatly on its moisture content. For logs to burn efficiently in a boiler the moisture should be at or below 25%. That’s not all. They should …

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Maintaining your rainwater harvesting system

Posted by Barry Nutley on 22 July 2009 at 9:10 am

Maintaining your rainwater harvesting system

How much maintenance of a rainwater harvesting system is needed, is a common question. As with any appliance, regular maintenance ensures optimum performance, and increases life. So here I aim to answer some of the common questions: 1. Do I have to clear the leaves out of the filter?Not necessar…

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What the renewable energy strategy and low carbon transition plan mean for your home

Posted by Cathy Debenham on 20 July 2009 at 3:01 pm

What the renewable energy strategy and low carbon transition plan mean for your home

Households are expected to make cuts in their carbon emissions of 29% by 2020 according to the Government's Low Carbon Transition Plan, announced by Ed Miliband last week (houses currently emit more than a third of the UK's carbon). This will be done through a combination of cutting the amount o…

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Lag your pipes

Posted by Tim Pullen on 16 July 2009 at 8:18 pm

Lag your pipes

I've just been asked whether it's worth lagging hot water pipes. The questioner said: "We have quite long hot-water pipe runs in our home. We've fitted the system boiler and thermal store nearer the bathroom, but we still have to run a lot of cold water to get hot water in the kitchen 2 floors …

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