Scottish heat pump rollout 'falling behind' new figures warn

Fewer than 9,000 have so far been installed since 2019.

The Plumbing and Heating Federation has warned that funding delays and high electricity costs are stalling the process of decarbonisation.

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It has also raised concerns over the payment structure of the Home Energy Scotland scheme, which sees many installers absorb substantial up-front costs.

In addition the disparity between the price of gas and that of electricity, on which heat pumps run, is a major barrier to adoption.

Fiona Hodgson, chief executive of the Plumbing and Heating Federation, said: “While it is encouraging to see growing numbers of homeowners and landlords making the switch to clean heating solutions, the Scottish Government’s ambition of over one million homes converted to low or zero-emission heat by 2030 is simply not achievable under current conditions.

"The data highlights the urgent need for clearer policy direction, greater financial certainty and stronger industry support.

“Today’s CBI report highlights the significant economic benefits of investing in the net zero economy. In Scotland alone, the sector contributes £9.1 billion, 4.9% of the country’s total GV, and supports nearly one in 25 Scottish workers.

"However, the financial strain of this transition cannot fall solely on already stretched businesses, especially as they face mounting pressures, including the upcoming National Insurance hike.

"Even with various funding schemes, the fundamental cost imbalance between electricity and fossil-fuel heating remains a deterrent for households. Closing the spark gap will require close coordination between Westminster and the devolved administrations.

“Only by working together can we provide the financial incentives and market certainty needed to boost consumer confidence and achieve Scotland’s net-zero targets.”

A Scottish Government spokesperson said: “More than 6,000 heat pumps were installed in Scotland last year, of which the Home Energy Scotland Grant and Loan Scheme is a significant driver, with more than 2,500 heat pumps funded in 2024.

“As a demand led scheme, the number of grants issued is directly related to the volume of applications received. There is no significant backlog of applications and completed applications with relevant supporting documentation are processed within the 10 working days timeframe.”

“Last year the scheme launched a new online application and claim system which has helped to improve the processing of applications and payments. Work is ongoing to make further improvements in line with applicant and installer feedback.

“Additionally, the scheme now provides up to 60% of the agreed funding amount for clean heating and renewable measures ahead of installation, to cover the cost of materials and address cashflow issues.” 

“We have set out what the UK Government needs to do to support the heat transition, including reducing the price gap between gas and electricity, regulating suppliers and products and making sure the electricity grid keeps up with demand.”