The UK has two Renewable Heat Incentives (RHI) that assist solar thermal. The non-domestic variant (non-dRHI) has operated since November 2011. The variant for households (dRHI) has operated since April 2014. Whereas the share of solar thermal applications within the non-DRHI is still low with 3 % (left chart), every fifth new domestic renewable heating system contains a solar water heater (right chart). For solar thermal, the non-dRHI currently pays 0.10 GBP/kWh for 20 years and the dRHI currently pays the end-user tariff at a rate of 0.192 Pound Sterling (GBP)/kWh for 7 years. Both rates will be annually adjusted for inflation through the payment period. The pie charts show the numbers of accreditations of non-dRHI and dRHI technologies.
Source: Gas and Electricity Markets Authority (Ofgem)
The domestic Renewable Heating Incentive (dRHI) for England, Wales and Scotland has been launched on 9 April 2014. For solar thermal, the dRHI will pay the end-user tariff at a rate of 0.192 Pound Sterling (GBP)/kWh for 7 years. The existing non-domestic RHI scheme continues at a new rate adjusted for inflation of 0.094 GBP/kWh for 20 years. The dRHI applies to biomass boilers & stoves, ground-source & air-source heat pumps heating and solar thermal DHW for single homes. The subsidy is for properties capable of getting a domestic Energy Performance Certificate (EPC) which confirms the property is a domestic dwelling. The recipient of the subsidy is the owner of the heating system. So this can be the person owning and living in the home, a private landlord or a registered social landlord. In general it is not applicable to a new home unless this has been self-built. Other requirements are that the property should also have a Green Deal Assessment (GDA) and where the GDA recommends installing loft and cavity wall insulation, these must first be fitted before applying for the dRHI. New self-built house can be exempt from the GDA requirement, as these will be assumed to have adequate building insulation. There are initial costs to the user to first obtain the EPC and GDA. (Find more information in the database of incentive programmes.)
The UK Renewable Heating Incentive (RHI) for Households, including assistance for solar thermal, has been announced since 2010 despite the non-household version being launched late in 2011. Positive signs indicate this will now be ready before summer 2014, as the UK government recently passed the relevant draft statutory instrument. This is the result of the consultation process which start in September 2013 based on a proposal of Department of Energy & Climate Change (DECC).
Solar thermal companies in the UK are going through a difficult period, with some well-known solar thermal system providers no longer trading. One such company has been Filsol Ltd., a collector manufacturer founded in 1981. Solarthermalworld.org spoke with John Blower, who was the Managing Director of Filsol Limited but is now Managing Director of Mint Renewables. Blower was also a previous chairman of the UK Solar Trade Association (STA). The text above shows up on the former Filsol website pointing out that Tomorrow´s Energy bought some of the Filsol´s assets. Source: http://www.tomorrowsenergy.co.uk/
After considerable delays and uncertainty, the UK’s Department for Energy and Climate Change (DECC) has been finally launched the Renewable Heat Incentive (RHI) scheme on 28th November 2011. Solar heating is one of the included technologies. The first phase of the tariff support is targeted at the non-domestic sector. This includes businesses, public sector, charities, not-for-profit organisations or industry which contributes 38% of the UK’s carbon emissions. Installations that were previously completed after 15 July 2009 will be eligible.
Generating heat and electricity: Since May 2010, 48 Volther PVT collectors by Turkish manufacturer Solimpeks have both supplied hot water to a children's home in Surrey County, Great Britain, and fed solar electricity into the local energy grid. According to the manufacturer, the system's payback period is 12 years, thanks to the Feed-in Tariff scheme for solar electricity. Photo: Solimpeks
The UK Government is currently seeking views on the introduction of a Renewable Heat Incentive (RHI) scheme to start in April 2011. Responses to the consultation are invited by Monday 26th April 2010. Details can be accessed here.
The key proposed aspects of the RHI are as follows: