The Renewable Heat Incentive (RHI) has failed to meet its objectives of increasing rates of low-carbon heating or providing value for money for consumers, according to the Public Accounts Committee (PAC). A report published Wednesday 16 May describes original take-up forecasts when the scheme was launched in 2011 as “wildly over-optimistic”. It highlighted that just 60,000 renewable appliances were installed over four years under the domestic RHI, compared to 6.2mn gas boilers. The RHI is estimated to cost £23bn over its lifetime. The report said: “An effective heat strategy needs to join up policy across heat networks; energy efficiency; heat decarbonisation research and development; product quality and building regulations.”