The document discusses the potential for farms in the UK to contribute to renewable energy production through various technologies like solar, wind, and anaerobic digestion (AD). It finds that farms could provide 10-20 GW of renewable energy capacity, equivalent to 10.5-21% of the UK's total energy in 2013. Specifically for AD, the document estimates that if all suitable dairy farms or 1,800 farms installed AD systems, they could generate 0.1 GW or 0.9 GW of capacity respectively. The document also notes that farm-scale renewable energy could provide farmers a new income source to help ensure the viability of their businesses and continue food production.