There are special rules for the domestic generation of surplus power – BIM40520
Specific receipts: domestic microgeneration: Income Tax exemption for domestic microgeneration
S782A Income Tax (Trading and Other Income) Act 2005
With effect from tax year 2007-08 there is an exemption from Income Tax for an individual’s income from the sale of electricity generated by a microgeneration system where:
1. the system is installed at or near domestic premises occupied by the individual, and
2. the individual intends that the amount of electricity generated by the microgeneration system will not significantly exceed the amount of electricity consumed in those premises.
For the purpose of this exemption ‘domestic premises’ means premises used wholly or mainly as a separate private dwelling.
A ‘microgeneration system’ is defined in S4 Climate Change and Sustainable Energy Act 2006.
This exemption is aimed at domestic microgeneration which is primarily intended to match the generator’s own home consumption needs. The term ‘significantly exceed’ in (b) above is not defined in Section 782A and should be considered by reference to the particular circumstances. However, in general, a householder who does not intend to generate an amount of electricity more than 20% in excess of their own domestic needs is unlikely to be regarded as intending to significantly exceed the amount of electricity consumed in their own premises.
No income tax will therefore arise on feed-in tariffs received by an individual from domestic microgeneration where the above conditions are met.
The exemption may apply where an individual installs a microgeneration system at a property which is not the individual’s main residence provided that the other domestic property is used by the individual, wholly or mainly, as a separate private dwelling and the other conditions are met.