LONDON, March 12 – British energy regulator Ofgem said on Wednesday that it had not found evidence of a breach of sustainability obligations by power company Drax, in the watchdog’s review of reports prepared by auditor KPMG. Renewable power generators in Britain can receive renewable obligation (RO) certificates which can then be sold to energy suppliers who use them to sell renewable electricity products to customers. For biomass power plants to qualify for the certificates they must show at least 70% of their biomass fuel comes from sustainable sources. Green groups have long criticised the sustainability credentials of biomass power plants, which burn wood pellets to generate electricity. In 2023, regulator Ofgem opened an investigation into whether Drax was in breach of annual reporting requirements under the RO scheme. Ofgem said it reviewed over 3,000 documents and did not find evidence to support claims that sustainability obligations had been breached.