The bigger picture
The outlook for ground source heat pumps (GSHP) is promising and there is every reason to expect a substantial increase in ground source heat pump sales over the coming years.
In December 2016 the Department of Business, Energy and Industrial Strategy (BEIS) published its long-awaited response to the March 2016 Renewable Heat Incentive (RHI) consultation and revealed its proposals for the revised scheme originally expected to launch in Spring 2017; political changes have resulted in the reforms being delayed with an expected announcement now in Autumn 2017. So in the meantime Kensa Heat Pumps is taking stock of where the ground source heat pump industry is, where we need to be, and the influences that will ensure we get there.
Within the BEIS response is the encouraging statement that:
The Government recognises that GSHPs are likely to be a strategically important technology for decarbonising heat, and anticipates potential for significant growth in deployment of this technology through the period to 2050.
Of course, many observers would argue this vote of confidence is long overdue; the Committee for Climate Change’s Fourth Carbon Budget called for four million heat pumps to be installed at residential properties by 2030. Right now, the UK’s heat pump estate numbers no more than 200,000 installations and deployment has remained static over the past few years at around 18,000 units per annum.
Against this backdrop, some targeted action from Government and innovative approaches from industry is clearly necessary to deliver the 2030 and 2050 carbon targets:
A big opportunity for GSHP sales will rest with installations that can qualify for the non-domestic RHI. Any installation featuring an individual heat pump at two or more residential properties served by a common ground array will qualify as district heating and be eligible for the 20-year non-domestic RHI income stream. By installing a heat pump in each dwelling, this removes the need for a plant room and provides each property with their own energy bill, allowing them to switch suppliers at their will.
This system architecture will appeal particularly to social landlords, and new funding and fulfilment models should create interest in both the new build sector and small retrofit community schemes.
BEIS expects significant uptake with the consultation response revealing ‘The Government is keen to support the deployment of GSHPs making use of shared ground loops’. There are compelling reasons; communal ground arrays are typically less expensive because it is usually possible to drill a smaller number of deeper boreholes, and they are more reliable as you eliminate the risk of an exceptionally high heat use property exhausting its individual borehole.
To support shared ground loop deployment, the revised RHI will feature a very important refinement; for residential district heating installations, RHI income will no longer be based upon metered heat consumption. Instead, the deemed heat consumption will be taken from the Energy Performance Certificate, which mirrors the established protocol for the domestic RHI.
This change is crucial. It will result in lower costs as there is no need to supply, install and maintain expensive metering/communications equipment. Further, it will be possible to establish the level of return at the outset of any project. Most importantly, the returns will be appealing and far more generous than those under the 7-year domestic RHI scheme.
Given the continued absence of any mandatory measures to demand the specification of heat pumps, the most notable ‘stick’ remains compliance with building regulations (for new builds and major renovations) or the need to meet SAP rating targets for social housing stock. Here the news is helpful too.
The Government is currently consulting on possible changes to SAP and has proposed some significant changes to the carbon emission factors linked to various fossil fuels.
The carbon intensity of electricity has been falling because of the increasing influence of renewable sources and the reduced reliance on coal in the generation mix.
These lower factors will significantly improve the SAP rating whenever a heat pump is installed so the technology will be viewed more favourably by architects and energy consultants.
The domestic RHI
Most commentators believe that action needs to be a blend of ‘carrot’ and ‘stick’ measures and Government has finally conceded that the ‘carrots’ delivered via the domestic RHI have to be awarded to the most deserving cases.
For this reason, the revised RHI will introduce a heat demand limit which will decrease returns for installations at large country homes and focus more spend on smaller dwellings.
Domestic RHI payments will be limited to a peak heat demand of 30,000kWh for payments based on deemed consumption.
The market for the new ErP A++ Evo series (available in 7-13kW) is predominantly small to medium sized private domestic projects; this is well timed given the proposed heat demand limit.
David Billingsley, Kensa’s Sales Manager, offers advise to those with larger properties:
Whilst we are generally pleased with the proposed RHI reforms, there is certainly a need for customers considering installations at larger properties to consider the impact of the new heat demand limit of 30,000kWh/Year. In most cases, it would be worthwhile to conclude any proposed installation before the new regulations are introduced.
Right to Build Act
The Government is keen to boost housebuilding and improve affordability, thus introducing the Right to Build Act in October 2016.
Local Authorities now have a legal duty to make sufficient plots available to meet demand on their Right to Build register.
The custom and self build sector is forecast for huge growth – research commissioned by the National Custom and Self Build Association shows that 53% of people would like to build their own home at some stage, with 1 million wanting to get started in the next 12 months.
Kensa’s move to launch the Evo Series, a new ground source heat pump for the private domestic market that delivers greater efficiencies, and in return lower bills and greater RHI returns for end users, was also motivated by the expected growth of the custom and self-build sector.
Whether it’s the concern of what Brexit may do to import costs for materials, or the influence of lifestyle or sustainability choices, buying British – and sourcing local products and labour – is an emerging important factor for all markets.
As a British manufacturer Kensa has always kept the UK market at the core of our product design and service offering, ensuring our products are easy to install, easy to operate and perform as promised.
The new Evo ground source heat pump series builds upon Kensa’s eighteen years of experience designing heat pumps specifically for British properties.
All in all there has never been a better time to embrace ground source heat pumps!