Such commercial scale projects now have a combined capacity in the UK of more than 4.7 GW, generating GBP768m (US$1.2bn) worth of power, and accounting for 12% of all renewable energy generation.
The report found that the number of on-site projects developed by businesses on manufacturing or retail sites increased by 53 per cent and generated more than GBP80m worth of electricity.
The report analysed figures supplied by Ofgem.
The food and drink industry, manufacturing and retail sectors all delivered strong growth for the on-site renewables sector, with solar accounting for nearly half of the new on-site capacity.
Wind turbines (pictured) represented 37 per cent of new on-site capacity.