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This is a big one. Take the plunge and install solar thermal water heating, the most reliable, easy to install, and low-maintenance form of domestic renewable energy for us in the UK.
By harnessing the sun's rays that are already shining down on your rooftop you could cut down the energy used to heat your water by a third, even with our gloomy British weather.
For people
Whilst installing a solar thermal water heater on your roof requires a bit of money up front, you can make back the money from your heating bills over the following years - payback time can range from 5 to 50 years depending on the system and location though! If you heat your water by electricity currently, you'll stand to save more. The Renewable Heat Incentive also provides a good financial leg-up to help make this an even more attractive investment.
For planet
Of course the main reason for this particular action is to move away from fossil fuels and take control of your energy needs.
25% of your home’s energy consumption goes into heating water. Heat that water from the simple power of the power and you're not producing any pollution and your hot water doesn't depend on the extraction of foreign oil, gas or coal, unlike conventional forms of heat generation.
That means less pollution and more energy security, which has got to be a good thing.