The feed-in tariff has made it simpler to sell the electricity you generate, but don't use in the house, back to the grid. It has set standard rates to be paid for electricity generated which are dependent on type of technology and size of system, and all exported electricity is paid at 3p per kWh.

Choosing your energy supplier is the key to seling excess. The reason it is simpler now is that under the previous system all the suppliers offered different buy back rates, and these had to be weighed up against the rates at which they sell electricity, so it was complex to work out the best deal.

Now all the big energy companies must buy back exported electricity from microgeneration, and some of the smaller ones have chosen to. If price is your key factor, then there's no shortage of price comparison sites available.

If it's important to you that the electricity you buy from the grid is from renewable sources you can use our guide How to buy renewable electricity.

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