Which? magazine has published a league table of the cities which have installed the highest number of renewable energy systems.
The study, conducted by energy consultant AEA, showed the growth in renewable energy capacity since the launch of the Feed-in Tariff last year.
It reveals that small-scale energy generation, including solar panels and wind turbines, has grown by 400 per cent over the last 18 months.
The leading city proved to be Sheffield, increasing its renewable energy capacity to over 3.5 kWe per 1,000 people, 99 per cent of which was accounted for by solar installations.
Although London has added the most renewable energy technology, its high population figure meant it was only placed sixth.
Solar panels proved to be the most popular, accounting for 75% of Feed-in Tariff scheme payments, while wind power accounts for 14%.
The report shows that 44,000 solar installations have been registered for the FiT, with small domestic systems making up the majority (38,300).
Cornwall is shown to be the area that generates the most solar photovoltaic power in the UK, with more than 1,000 solar installations and three megawatts electrical (MWe) capacity.
Aberdeenshire generates the most wind power and Perth and Kinross the most hydro electricity.
The magazine states that it has found it is possible to make up to £28,000 profit from a 4kWp PV installation over 25 years.
Which? also advised caution when buying PV systems, following the results of its previous investigations that revealed questionable sales tactics being used by some companies.
Its top 10 table reads as follows: