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Renewable heat soon to join the energy revolution

Posted by Gabriel Wondrausch on 6 November 2009 at 9:13 am

Renewable heat soon to join the energy revolution

Until a few months ago, solar thermal hot water heating has been the most cost effective way for people to generate their own renewable energy - for every pound invested it has usually delivered the highest units of energy. The reason for this is that solar thermal systems have always been the most…

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Sash windows can be made energy efficient

Posted by Cathy Debenham on 4 November 2009 at 11:24 am

Sash windows can be made energy efficient

Traditional timber sash windows are often associated with howling draughts, and are under threat as people replace them with plastic double glazed units. But before you throw yours on the scrapheap, read English Heritage's research which shows that simple repairs and basic improvements can significa…

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How noisy are wind turbines really?

Posted by Graham Eastwick on 2 November 2009 at 9:50 am

How noisy are wind turbines really?

When discussing noise and wind turbines it is important to be clear what size of turbine you are thinking about. The noise from large, commercial wind turbines is very different to that generated by smaller turbines installed at homes, offices and schools. The rotors on smaller turbines rotate much…

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Act now if you want to measure wind speed

Posted by Cathy Debenham on 29 October 2009 at 11:45 am

Act now if you want to measure wind speed

Measuring the wind speed on your potential site is the only sure fire way of knowing how good an investment a wind turbine will be as regular readers of the YouGen renewable energy blog will know.  Until recently this wasn't either cheap or easy, but that changed earlier this year with the l…

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Will it cost me more to harvest rainwater?

Posted by Barry Nutley on 26 October 2009 at 2:32 pm

Will it cost me more to harvest rainwater?

Rainwater harvesting systems tend to be pumped, causing people to ask the following questions : 1. "Does the cost of running the pump negate any savings made?" 2. "By running a pump, are we increasing our carbon emissions, and negating any environmental benefits?" Well, to answer those…

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At last some vision and ambition from a government scheme

Posted by Matthew Rhodes on 21 October 2009 at 4:10 pm

At last some vision and ambition from a government scheme

Encraft is fortunate enough to be involved in the government's Retrofit for the Future competition. This is a national scheme to find innovative ways of reducing carbon emissions from housing by 80% or more – something we urgently must to do to deliver the carbon dioxide reductions we need. Wha…

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Energy: out of sight, out of mind?

Posted by Cathy Debenham on 20 October 2009 at 10:17 am

Energy: out of sight, out of mind?

This week is Energy Saving Week, so it seems as good a time as any to think about energy and what it means to us. Despite the constant calls on us to be more energy efficient, the reality for most people is that we know next to nothing about our energy consumption. Most of us have a grasp of how …

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Scots pilot loan scheme for energy efficiency

Posted by Cathy Debenham on 16 October 2009 at 9:43 am

Scots pilot loan scheme for energy efficiency

Homeowners in Scotland can apply for interest free loans to improve their insulation, replace inefficient boilers or install small scale renewables thanks to a new government pilot scheme. The £2m Energy Saving Scotland home loans scheme is being administered by the Energy Saving Trust in Scotla…

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Making the most of passive solar energy

Posted by Tim Pullen on 14 October 2009 at 9:24 am

Making the most of passive solar energy

Using passive solar energy is a matter of design. To put it another way, if you don't design the house to use passive solar energy, it is difficult to use it well. So pretty much the same as any other form of energy then. What you need is three things; thermal mass (something to absorb …

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Whole house approach to energy efficiency needed

Posted by Cathy Debenham on 12 October 2009 at 4:32 pm

Whole house approach to energy efficiency needed

Government must make a major shift in policy to transform the energy efficiency of our residential housing stock according to the Committee on Climate Change's first annual report. A whole house, street by street approach in which  households are offered an energy audit, with a follow up pac…

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Learn how to generate your own electricity

Posted by Cathy Debenham on 8 October 2009 at 2:19 pm

Learn how to generate your own electricity

Wind farms - you either love them or you loathe them. I'm on the side of love. Ever since the first time I drove down the A395 in Cornwall, and they loomed, eerie and magnificent in the bleak dusk, I've been a wind turbine fan. So I'm excited to hear about Good Energy's Power from the People day …

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Building a thermal store - experience sought

Posted by Cathy Debenham on 7 October 2009 at 9:35 am

Building a thermal store - experience sought

Can anyone help Jeff B with this query: I am thinking of having a very large thermal store (of the order of 2000 litres capacity) to use with my 30kw wood pellet boiler. Due to space restrictions this would have to be located just outside the house. Does anyone have experience of making a wel…

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Rainwater harvesting: small is beautiful

Posted by Barry Nutley on 5 October 2009 at 11:49 am

Rainwater harvesting: small is beautiful

When we think of rainwater harvesting, we tend to envisage a full scale domestic system with a large tank, say 4000 litres, buried underground, providing water to the toilets, washing machine et al. This can be a costly business (especially if it's a retrofit project) with not much change from £7,0…

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Equal feed-in tariff for existing generation has heavyweight support

Posted by Cathy Debenham on 30 September 2009 at 10:10 am

Equal feed-in tariff for existing generation has heavyweight support

Support for equal feed-in rates for those who already have small solar PV, wind turbines or hydro came from diverse parts of the renewable energy sector at yesterday's RegenSW conference in Bristol. Sponsor Christine Griffiths of Aeolus Power got her passionate call in early in the day - to be me…

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Island grid increases energy security aspect of microgeneration

Posted by Cathy Debenham on 28 September 2009 at 10:04 am

Island grid increases energy security aspect of microgeneration

Security of electricity supply is one of the main reasons that people install their own solar panels or wind turbine. However, a system that is connected to the national grid currently doesn't afford total control. The benefit of grid connection is that you can sell any excess you generate to the…

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Solar PV: how to tell the difference between panel types

Posted by Cathy Debenham on 25 September 2009 at 9:50 am

Solar PV: how to tell the difference between panel types

Solar PV (photovoltaic) panels come in lots of different types - mostly with long and complicated names - so it's not easy to know what the difference is. Last night I went to an excellent evening organised by the Sid Valley Energy Action Group - a group of enthusiastic volunteers who promote ene…

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Are roof mounted turbines any good?

Posted by Graham Eastwick on 24 September 2009 at 10:43 am

Are roof mounted turbines any good?

Roof-mounted turbines were very popular a year ago or two. However, over the last few months a couple of reports have been published that suggest building-mounted turbines may not deliver as much electricity as hoped. One of the major manufacturers has just closed and stopped supplying turbines to …

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Is Carlos Tevez a green god?

Posted by Cathy Debenham on 21 September 2009 at 9:36 am

Is Carlos Tevez a green god?

Manchester City's Carlos Tevez has "signed for the greens", according to the Daily Star following his move into "the country's most environmentally friendly superhome". A claim in the article that this makes him "probably the greenest footballer in the country" overlooks  David James' long-s…

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Low carbon UK is well down the pecking order

Posted by Cathy Debenham on 17 September 2009 at 11:35 am

Low carbon UK is well down the pecking order

How much does the government really care about shifting the UK to a low carbon economy? Not a lot is the only conclusion I can come to from its spending figures. Yesterday's Guardian published a wonderfully simple, easy to read, chart called the definitive atlas of UK government spending, created…

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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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