Friday, September 10, 2021

Heat network fund is a good start, says BESA

The Building Engineering Services Association (BESA) has welcomed the launch of the £270 million Green Heat Network Fund (GHNF), which is designed to increase the use of low-carbon technologies in a new generation of heat networks.

The Association said the funding would help increase interest and investment in the use of technologies like heat pumps, solar and geothermal energy to power networks but said this was only one part of the equation and urged the government to introduce a broader range of measures to incentivise the decarbonisation of UK heating.

Describing the GHNF as “a good start”, BESA said the Treasury should also consider reducing environmental levies on electricity and replace the now closed Renewable Heat Incentive (RHI).

Heat networks supply buildings from a central source and are seen as a key part of the strategy for transitioning the country to lower carbon heating. There are more than 14,000 heat networks in the UK, providing heating and hot water to around 480,000 consumers, but they still provide just 2% of UK heat demand – a proportion that has not grown for 20 years.

The new funding, which will be spent over three years starting next April, is intended to stimulate a new generation of networks that could eventually provide as much as 18% of heat demand by 2050 while simultaneously lowering carbon emissions from the sector.

The department for Business, Energy and Industrial Strategy (BEIS) said that heat networks could be a cost-effective way of reducing carbon emissions from heating and are the only way to extract the full potential of larger-scale renewable and recovered heat sources.


It said the GHNF would deliver carbon savings and decreases in carbon intensity of heat supplied; increase the total amount of low-carbon heat used in heat networks (both retrofitted and new); and help prepare the market for future low-carbon regulation and the Future Homes Standard.

BESA is supporting this work through its testing regime for Heat Interface Units (HIUs) which extract the heat from the network to supply homes and commercial buildings.

“The test highlights the importance of keeping the flow return temperatures from users as low as possible boosting the efficiency of any centralised heat pump to save energy and cost,” said BESA’s technical consultant Dr Steffan Cook.

“We are also planning to bring further types of HIU into the testing and validation scheme, expanding the information available to heat network designers in step with the government’s push for more and greener district heating.” 

Many experts also say the government needs to tackle the biggest barrier to low carbon heating, which is the high tax take and green levies imposed on electricity that adds 28% to consumer bills and so is a disincentive to installing heat pumps. The equivalent tax on natural gas is just 7%.

“Heat networks will play a crucial part in the long-term decarbonisation of heating in this country, but they are only one part of the equation,” said BESA’s head of technical Graeme Fox.

“The government needs to consider a more rounded policy response that includes a fairer tax burden on electricity to ensure a much wider uptake of proven low carbon solutions like heat pumps and more incentives to stimulate investment.”

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