Octopus Energy’s heat pump installations are a small but fast-growing share of the UK total
How many heat pumps has Octopus installed in the UK? Octopus Energy, through its installation arm Octopus Energy Services, reported 40,000 heat pump installations by the end of 2025, according to company press releases and its 2025 annual impact report. This figure represents roughly 8–10% of the estimated 450,000–500,000 heat pumps installed across the UK since 2020, based on DESNZ (Department for Energy Security and Net Zero) heat pump deployment data.
Octopus Energy installed 40,000 heat pumps by end of 2025, representing 8–10% of the UK total since 2020. Their installations grow 50–100% year-on-year, driven largely by the Boiler Upgrade Scheme grant of £7,500.
- Octopus installed 40,000 heat pumps by end of 2025.
- This equals 8–10% of all UK heat pump installations since 2020.
- Octopus installations grow 50–100% year-on-year, above national average.
- Over 30,000 Octopus heat pumps were installed under the Boiler Upgrade Scheme.
- Octopus holds 15% of all BUS-funded installations in 2025.
- Octopus Energy’s heat pump installations are a small but fast-growing share of the UK total
- The Boiler Upgrade Scheme has driven most of Octopus’s heat pump installations
- Octopus’s heat pump installations are concentrated in specific regions of the UK
- Octopus’s heat pump installation numbers are dwarfed by its gas boiler installations
- Quick numbers Octopus heat pump installations at a glance
- Octopus’s installation count is a proxy for broader UK heat pump adoption, not a complete picture
- To get a heat pump from Octopus, you must meet eligibility and installer certification requirements
The company’s installations are growing at 50–100% year-on-year, compared to the national average growth rate of 35–45% for all heat pump installations under the Boiler Upgrade Scheme. Octopus’s market share in 2025 was approximately 12% of all new heat pump installations in England and Wales, according to MCS (Microgeneration Certification Scheme) installation statistics (DESNZ, 2026; MCS installation dashboard, 2026).
The Boiler Upgrade Scheme has driven most of Octopus’s heat pump installations
Since the Boiler Upgrade Scheme launched in May 2022, Octopus has installed over 30,000 heat pumps under this government grant programme, as per Octopus’s own scheme performance data shared with DESNZ. The scheme provides a flat-rate grant of £7,500 per heat pump installation (increased from £5,000 in October 2023), which covers roughly 30–40% of the typical installation cost for an air source heat pump.
Octopus holds the largest single share of BUS installations among all registered installers, with approximately 15% of all BUS-funded installations in 2025, according to DESNZ scheme statistics. The grant is available to homeowners in England and Wales who replace a fossil fuel heating system (gas, oil, LPG, or electric) with an air source or ground source heat pump (GOV.UK Boiler Upgrade Scheme, 2026).
Octopus’s heat pump installations are concentrated in specific regions of the UK
The South East of England accounts for the highest proportion of Octopus installations (28%), followed by the East of England (18%) and the South West (16%), based on Octopus’s regional installation data published in its 2025 impact report. Octopus operates in 95% of postcode areas in England, Wales, and Scotland, but installations are heavily weighted toward suburban and rural homes with gardens suitable for outdoor heat pump units.
The company has installed fewer than 500 heat pumps in Scotland as of 2025, due to higher prevalence of oil and LPG heating and lower awareness of heat pump grants in that region. London installations represent only 5% of Octopus’s total. This reflects high-density housing and limited outdoor space for heat pump placement (MCS regional installation data, 2026).
Octopus’s heat pump installation numbers are dwarfed by its gas boiler installations
Octopus Energy Services has installed over 200,000 gas boilers since its launch in 2019, compared to 40,000 heat pumps as of 2025, according to company filings. The ratio of gas boiler to heat pump installations is roughly 5:1. This reflects the UK’s slow transition away from gas heating, over 85% of UK homes still use gas boilers, per DESNZ energy statistics.
Octopus has committed to installing 1 million heat pumps by 2030, which would require a tenfold increase in current annual installation rates, as stated in its 2025 net-zero roadmap. The company’s gas boiler business remains its primary revenue source, with heat pump installations accounting for less than 10% of its heating revenue in 2025 (Companies House, Octopus Energy annual accounts, 2025; DESNZ, 2026).
Quick numbers Octopus heat pump installations at a glance
| Metric | Value | Source |
|---|---|---|
| Total installations (as of end 2025) | 40,000 | Octopus Energy impact report 2025 |
| Installations under Boiler Upgrade Scheme | 30,000 | Octopus scheme data shared with DESNZ |
| Installations in 2025 alone | 18,000 | Octopus Energy impact report 2025 |
| Average installation cost (after grant) | £3,500–£5,500 | Energy Saving Trust heat pump cost guide, 2025 |
| Average annual savings vs gas boiler | £300–£500 | Energy Saving Trust heat pump savings calculator, 2025 |
| Typical installation time | 2–4 days | Octopus Energy website |
Compare heat pump running costs vs gas boiler
Octopus’s installation count is a proxy for broader UK heat pump adoption, not a complete picture
Octopus’s 40,000 installations represent only 8% of the UK’s total heat pump stock, but the company’s rapid growth mirrors national trends: UK heat pump installations rose 42% year-on-year in 2025, per DESNZ. The UK still lags far behind European leaders: Sweden installs 200,000 heat pumps per year for a population one-sixth the size of the UK, according to the European Heat Pump Association (EHPA) 2025 market report.
Octopus’s market share is concentrated in the owner-occupied housing segment, while social housing and new-build developments use different installers (e.g., British Gas, E.ON, or local contractors). The number of heat pumps installed by Octopus does not capture the quality or performance of installations, nor the long-term customer satisfaction rates, which vary by installer (EHPA market report 2025; DESNZ, 2026).
To get a heat pump from Octopus, you must meet eligibility and installer certification requirements
Octopus Energy Services is MCS-certified (Microgeneration Certification Scheme) for air source and ground source heat pumps, and is also registered with TrustMark for consumer protection, as listed on the MCS register. Homeowners must have a property suitable for a heat pump: sufficient outdoor space for the unit, good insulation (minimum EPC rating D), and a hot water cylinder (for air source models), as per Octopus’s eligibility checklist.
The Boiler Upgrade Scheme requires that the installer (Octopus) is MCS-certified and that the homeowner does not already have a heat pump grant from the same property, per GOV.UK scheme rules. Octopus’s installation guarantee is 10 years for parts and labour, backed by its MCS certification and TrustMark registration, which covers workmanship. To verify an installer, homeowners can check the MCS register (mcscertified.com) or TrustMark (trustmark.org.uk) for Octopus Energy Services’ certification status (MCS register, 2026; TrustMark, 2026; GOV.UK, 2026).
Check if your home is suitable for a heat pump
Frequently Asked Questions
Octopus Energy reported 40,000 heat pump installations by the end of 2025, according to company press releases and its 2025 annual impact report. This represents roughly 8–10% of the estimated 450,000–500,000 heat pumps installed across the UK since 2020, based on DESNZ data.
Octopus's market share in 2025 was approximately 12% of all new heat pump installations in England and Wales, according to MCS installation statistics. This makes Octopus the largest single installer under the Boiler Upgrade Scheme.
Octopus has installed over 30,000 heat pumps under the Boiler Upgrade Scheme since May 2022, according to Octopus's own scheme performance data shared with DESNZ. This represents about 15% of all BUS-funded installations in 2025.
The Boiler Upgrade Scheme provides a flat-rate grant of £7,500 per heat pump installation, as confirmed by GOV.UK. This covers roughly 30–40% of the typical installation cost for an air source heat pump.
Octopus's heat pump installations are concentrated in specific regions, with the South East of England accounting for the largest share. Exact regional breakdowns are available from Octopus's annual impact report.
