The Renewable Heat Incentive (the RHI) is a payment system in England, Scotland and Wales, for the generation of heat from renewable energy sources. Introduced on 28 November 2011, the RHI replaces the Low Carbon Building Programme, which closed in 2010.
The RHI operates in a similar manner to the Feed-in Tariff system, and was introduced through the same legislation - the Energy Act 2008. [1] In the first phase of the RHI cash payments are paid to owners who install renewable heat generation equipment in non-domestic buildings: Commercial RHI.
The RHI went live on 28 November 2011 for non domestic buildings. The Coalition Government confirmed its support for the RHI in the October 2010 Spending Review and published details on 10 March 2011. [2] The RHI was extended to domestic buildings on 9 April 2014 after a further series of delays. Three consultations were launched which included proposed domestic tariffs and a long discussion on eligible technologies along with changes to the Non-domestic RHI which included proposals to triple the tariffs for ground source heat pumps and the proposed addition of a tariff for Air to Water Heat Pumps.
Investment in low carbon technologies is a private investment for a public benefit. The RHI is due to end on 31 March 2022. The Government has not announced how it will encourage low carbon heating after 31 March 2021, or the supply chains on which it relies.
The Non-Domestic Renewable Heat Incentive Scheme (NDRHI) in Great Britain closed to new applicants on 31 March 2021.
Through the Non-domestic RHI, generators of renewable heat for non-domestic buildings can be paid up to 10.44p/kWhr for hot water and up to 9.09p/kWhr for heat which they generate and use themselves. The RHI tariff depends on which renewable heat systems are used and the scale of generation. The annual subsidy lasts for 20 years for non-domestic buildings, and seven years for domestic buildings. As such, users may earn enough money from the tariffs to pay off their installation costs in five to eight years. According to the Government, which has set the tariff levels, users will earn a return of 12% per annum. This is tax free income for individuals. The equivalent for Feed-In Tariffs is 5–8%.
The RHI provides support for community and district heating schemes where a single renewable heat system provides heat or hot water to more than one property.
The renewable heat technologies which are eligible under the Non-domestic RHI are solar thermal (hot water) panels, ground source heat pumps, water source heat pumps, biomass boilers, and biomethane. The list was extended in April 2014 to include air to water heat pumps and deep geothermal. See table of tariffs [3] for the Non-domestic RHI.
Although based on the Energy Act 2008, the Non-domestic RHI was not introduced until November 2011. Although intended to support a range of renewable heat technologies, nearly all the initial incentives were paid for biomass boilers. The larger initial tariffs for biomass boilers decreased the demand for other renewable technologies including heat pumps and solar thermal. From May 2014 the Non-domestic RHI tariffs have been realigned with increased tariffs for ground source heat pumps and the introduction of RHI tariffs for air to water heat pumps. The effect of prescriptive legislation has been to inhibit innovation in renewable technologies - although one of the stated aims of the RHI has been to encourage innovation.
In Northern Ireland, the RHI scheme was implemented with serious flaws, allowing business owners to make a profit from heating properties that were previously unheated. The political fallout led to the Renewable Heat Incentive scandal.
The introduction of Domestic RHI has been delayed many times following a series of tardy consultation processes. The latest delay is from summer 2013 to April 2014. It is now available for eligible installations commissioned from 15 July 2009 onwards. Any installation taking place between September 2011 and 31 March 2014 was eligible for the Renewable Heat Premium Payments which consisted of a small upfront payment prior to the RHI being introduced.
Through the Domestic RHI, generators of renewable heat for single domestic buildings can be paid up to 20.66p/kWhr for solar thermal hot water and up to 20.46p/kWhr for heat which they generated by a ground source heat pump. [4] The RHI tariff depends on which renewable heat systems are used and the scale of generation. The tariffs are larger than for the Non-domestic RHI, but are paid over seven years, rather than for 20 years for non-domestic buildings. See table of tariffs [5] for the Domestic RHI.
Although based on the Energy Act 2008, DECC has taken six years before introducing the Domestic RHI. Delays have been very damaging to the renewable energy industries – which DECC claims to be supporting.
The RHI has suppressed innovations in renewable energy sectors by excluding from incentives any technologies which are not already well established.
A heat pump is a device that uses work to transfer heat from a cool space to a warm space by transferring thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. In cold weather a heat pump can move heat from the cool outdoors to warm a house; the pump may also be designed to move heat from the house to the warmer outdoors in warm weather. As they transfer heat rather than generating heat, they are more energy-efficient than other ways of heating a home.
The Renewables Obligation (RO) is designed to encourage generation of electricity from eligible renewable sources in the United Kingdom. It was introduced in England and Wales and in a different form in Scotland in April 2002 and in Northern Ireland in April 2005, replacing the Non-Fossil Fuel Obligation which operated from 1990.
District heating is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration plant burning fossil fuels or biomass, but heat-only boiler stations, geothermal heating, heat pumps and central solar heating are also used, as well as heat waste from factories and nuclear power electricity generation. District heating plants can provide higher efficiencies and better pollution control than localized boilers. According to some research, district heating with combined heat and power (CHPDH) is the cheapest method of cutting carbon emissions, and has one of the lowest carbon footprints of all fossil generation plants.
Microgeneration is the small-scale production of heat or electric power from a "low carbon source," as an alternative or supplement to traditional centralized grid-connected power.
Renewable heat is an application of renewable energy referring to the generation of heat from renewable sources; for example, feeding radiators with water warmed by focused solar radiation rather than by a fossil fuel boiler. Renewable heat technologies include renewable biofuels, solar heating, geothermal heating, heat pumps and heat exchangers. Insulation is almost always an important factor in how renewable heating is implemented.
A ground source heat pump is a heating/cooling system for buildings that uses a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons. Ground source heat pumps (GSHPs) – or geothermal heat pumps (GHP) as they are commonly termed in North America – are among the most energy-efficient technologies for providing HVAC and water heating, using far less energy than can be achieved by burning a fuel in a boiler/furnace or by use of resistive electric heaters.
The Low Carbon Building Programme (LCBP) was a payments system in England, Scotland and Wales. The UK Government programme was administered by BERR and ran from 1 April 2006 until its closure to new applications on 24 May 2010. The scheme was replaced by the Renewable Heat Incentive in November 2011.
Financial incentives for photovoltaics are incentives offered to electricity consumers to install and operate solar-electric generating systems, also known as photovoltaics (PV).
Renewable energy in the United Kingdom contributes to production for electricity, heat, and transport.
A feed-in tariff is a policy mechanism designed to accelerate investment in renewable energy technologies by offering long-term contracts to renewable energy producers. This means promising renewable energy producers an above-market price and providing price certainty and long-term contracts that help finance renewable energy investments. Typically, FITs award different prices to different sources of renewable energy in order to encourage development of one technology over another. For example, technologies such as wind power and solar PV are awarded a higher price per kWh than tidal power. FITs often include a "degression": a gradual decrease of the price or tariff in order to follow and encourage technological cost reductions.
Feed-in tariffs in Australia are the feed-in tariffs (FITs) paid under various State schemes to non-commercial producers of electricity generated by solar photovoltaic (PV) systems using solar panels. They are a way of subsidising and encouraging uptake of renewable energy and in Australia have been enacted at the State level, in conjunction with a federal mandatory renewable energy target.
Solar hot water is water that is heated using energy from the Sun. Solar energy heats up large panels called thermal collectors, commonly known as solar panels. The energy is transferred through a fluid to a reservoir tank for storage and subsequent use. It is then used to heat water for commercial or domestic use and also as an energy input for heating and cooling devices and for industrial "process heat" applications.
The Renewable Energy Sources Act or EEG is a series of German laws that originally provided a feed-in tariff (FIT) scheme to encourage the generation of renewable electricity. The EEG 2014 specified the transition to an auction system for most technologies which has been finished with the current version EEG 2017.
A feed-in tariff is when payments are given by energy suppliers if a property or organisation generates their own electricity using technology such as solar panels or wind turbines and feeds any surplus back to the grid. In the United Kingdom, they were entered into law by the Energy Act 2008 and took effect from April 2010. The scheme closed to new applicants on 31 March 2019.
Renewable energy has developed rapidly in Italy over the past decade and provided the country a means of diversifying from its historical dependency on imported fuels. Solar power accounted for around 8% of the total electric production in the country in 2014, making Italy the country with the highest contribution from solar energy in the world that year. Rapid growth in the deployment of solar, wind and bio energy in recent years lead to Italy producing over 40% of its electricity from renewable sources in 2014.
The United Kingdom is committed to legally binding greenhouse gas emissions reduction targets of 34% by 2020 and 80% by 2050, compared to 1990 levels, as set out in the Climate Change Act 2008. Decarbonisation of electricity generation will form a major part of this reduction and is essential before other sectors of the economy can be successfully decarbonised.
The Green Deal was a UK government policy initiative that gave homeowners, landlords and tenants the opportunity to pay for energy efficient home improvements through the savings on their energy bills from 2012 to 2015. At the heart of the Green Deal was the rule that savings on bills would exceed the cost of the work. By meeting this 'Golden Rule', consumers were able to receive energy savings without direct cost. Consumers then paid back the cost of such improvements through the expected savings in their energy bills. However, there is no guarantee that the eventual savings made by consumers will match the cost of the loans they take out to make the improvements and industry bodies recognised there was a risk consumers could end up out of pocket.
Freetricity is a company that provides residential solar power systems under the feed-in tariffs in the United Kingdom. It was started by Ben Way and Paul Williams who met on The Secret Millionaire.
Approximately 40% of primary energy is from renewable energy sources in New Zealand. Approximately 80% of electricity comes from renewable energy, primarily hydropower and geothermal power.
Denmark is a leading country in renewable energy production and usage. Renewable energy sources collectively produced 75% of Denmark's electricity generation in 2022, and are expected to provide 100% of national electric power production from 2030. Including energy use in the heating/cooling and transport sectors, Denmark is expected to reach 100% renewable energy in 2050, up from the 34% recorded in 2021.