How the UK is Upgrading the Green Energy Supply Chain

The UK has just launched the largest home upgrade programme in the country’s history committing £15bn (US$20bn) in public investment to retrofit up to five million homes with solar panels, heat pumps and battery storage by 2030.

The Warm Homes Plan, which was announced by Prime Minister Keir Starmer and Energy Secretary Ed Miliband on 20 January 2025, aims to lift one million families out of fuel poverty while accelerating the electrification of domestic heating.

This major capital injection comes at a moment when the UK is grappling with the legacy of volatile gas prices following Russia's invasion of Ukraine, which cost the UK £183bn (US$246bn) according to climate think tank E3G.

Because the strategy focuses on deployment at scale, it creates a substantial demand signal for procurement leaders and manufacturers within the renewable energy sector.

Investment boosts energy infrastructure

The plan has three main strands involving direct support for low-income households, universal access to government-backed loans and new regulations for rental properties.

Low-income families stand to receive fully-funded installations worth up to £12,000 (US$16,096), covering solar panels, batteries and heat pumps depending on suitability.

The government plans to focus on neighbourhoods too, rather than individual properties. As such, social housing residents could see entire streets upgraded simultaneously, arguably streamlining the logistics required for installers.

All UK homeowners will gain access to zero and low-interest loans for solar installations, with the government promising to triple rooftop solar capacity by 2030.

Total investment across the parliamentary term is projected to be around £38bn (US$51bn) when private sector contributions are included.

A £7,500 (US$10,061) universal grant for heat pumps will be available, including the first government support for air-to-air heat pumps that can cool homes in summer.

Manufacturing and supply chains

For the procurement and manufacturing sectors, the initiative presents specific targets regarding domestic production capability.

The plan includes a target for 70% of heat pumps installed in Britain to be manufactured domestically, with government investment in the heat pump supply chain tripling to £84m (US$113m).

Consequently, the government projects 180,000 additional jobs in energy efficiency and clean heating by 2030. Reactions from industry bodies suggest this investment could stabilise long-term procurement planning.

Charlotte Lee, CEO of the Heat Pump Association UK, describes the funding as "a strong signal to both industry and consumers that the shift to clean, electrified heat remains important for this Government".

Supply chains for solar components also face increased demand. Solar Energy UK's Policy Director, Gemma Grimes, notes that almost two million small-scale solar installations have already been completed.

"The industry stands ready and able to build millions more by 2030," she says.

Industry leaders welcome plans

Major energy companies have endorsed the plan, viewing it as a catalyst for scaling deployment of technologies that remain expensive for many households.

Greg Jackson, Founder and CEO of Octopus Energy, the UK's largest heat pump installer, notes the economic benefits of the shift.

"Electrifying homes is the best way to cut bills for good and escape the yoyo of fossil fuel costs," says Greg.

Charlotte Lee, CEO of the Heat Pump Association UK, describes the funding as "a strong signal to both industry and consumers that the shift to clean, electrified heat remains important for this Government".

Supply chains for solar components also face increased demand. Solar Energy UK's Policy Director, Gemma Grimes, notes that almost two million small-scale solar installations have already been completed.

"The industry stands ready and able to build millions more by 2030," she says.

Industry leaders welcome plans

Major energy companies have endorsed the plan, viewing it as a catalyst for scaling deployment of technologies that remain expensive for many households.

Greg Jackson, Founder and CEO of Octopus Energy, the UK's largest heat pump installer, notes the economic benefits of the shift.

"Electrifying homes is the best way to cut bills for good and escape the yoyo of fossil fuel costs," says Greg.

He notes that with proper finance and simplified regulations, "heat pumps will increasingly be the best solution for many homes – as they are in other countries like Sweden, Norway and Finland".

Execution of the strategy will rely heavily on available workforce capacity. Chris O'Shea, CEO of Centrica, emphasises his company's readiness with 7,000 unionised engineers.

"To achieve net zero, we must start where it matters most - in people's homes," Chris says. "That means making the transition simple, affordable and within reach for every household."

Elsewhere, E.ON's UK CEO, Chris Norbury, highlights the importance of combining generation and storage with time-of-use tariffs.

"This approach puts control in customers' hands, pounds in their pocket and turns the energy system into something that works for people, not the other way around," Chris says.

To manage the rollout, the plan will be delivered through a new Warm Homes Agency, consolidating functions currently scattered across the energy regulator Ofgem and other bodies.

Jonathan Brearley, who is CEO of Ofgem, confirms that existing experts would transfer to the new organisation to deliver "a clearer, more efficient system".

However, success depends on overcoming longstanding barriers to retrofit delivery, including skills shortages and supply chain constraints.