Electricity isn’t the only form of energy

The planned RHI (Renewable Heat Incentive) scheme is almost with us, but seems to be seriously watered down when it comes to solar water heating on domestic properties.

Where is most of domestic energy consumed? In heating!

How is most of that heat generated? By using gas or oil or coal, rarely electricity!

What do the government want us to cut down on?  Our consumption of gas and oil and coal.

Looking at hot water alone and lets say I have a choice of heating it using solar hot water or electricity. Throughout the summer I can have all my hot water heated by a solar water heater which comprises a contraption made up of glass, copper and insulating material, all relatively low tech but varying in efficiency depending on the way it is formed, perhaps solar flat plate or vacuum tube.

This solar water heater will cover between 4 and 6 square metres of my roof and provide all my hot water from , late spring to early autumn. The whole system will cost in the region of  £4,000, is reliable and relatively maintenance free.  Very little electricity is involved.

 Conversely, I could do the same job with £10,000 to £20,000 worth of solar PV, which while I might have to pay a great deal to  install, I will get paid Feed in Tariffs which will pay back the full costs in 10 years and give me a profit for another 15.  These solar PV panels are very costly to make, invariably imported from China, consume vast amounts of rare metals and are very costly in energy to manufacture.  

If the Government really wants to cut down on the use of energy, they should proactively support the installation of solar water heating, in my opinion to a greater extent than solar PV as there is a far greater carbon saving return per £ invested whether through grants or when considering the cost of the installation. 

More information on the  Renewable Heat Incentive and how it relates to Solar Water Heating can be seen here within a press release from the Solar Trades Association placed on the solaruk website. http://www.solaruk.net/news/solarenergy.asp?item=2170

The Government seem to have got hung up on electricity rather than energy.

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One Response

  1. I couldn’t agree more. If the Government really wants to cut down on the use of energy, they should proactively support the installation of solar water heating, in my opinion also to a greater extent than solar PV. Will it happen though?

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