Anesco
2 known investors
Anesco develops, builds, operates and optimises grid-scale solar and battery storage assets, and provides energy efficiency services to UK utilities, local authorities and social housing through the ECO scheme. It serves renewable energy investors and works across the UK and northern Europe including Ireland, the Netherlands, Denmark and Belgium.
Also known as Anesco Ltd
Founders & leadership
Investors · 2
Company profile
researched Aug 2026Anesco (Anesco Ltd) is an independent UK renewable energy company that develops, designs, constructs, operates and maintains grid-scale solar and battery storage assets, and delivers government-funded domestic energy efficiency and retrofit programmes. It has constructed more than 100 solar farms and 30 energy storage facilities in the UK and Europe, and provides route-to-market services for asset owners, optimising battery storage assets across multiple markets.
Through its energy efficiency arm, Anesco acts as a managing agent for the government's Energy Company Obligation (ECO) scheme, in which it has participated since the scheme was introduced in 2013; the current ECO4 phase began in 2022 and runs to 2026. The company secures utility funding and allocates it to qualifying retrofit measures, covering cavity, wall, loft and flat roof insulation, boiler replacements, first-time central heating, air source heat pumps, solar PV and battery storage, delivered to PAS 2030/2035 and MCS standards. Services span bid writing and funding applications, stock condition surveys, technical design, installation, compliance management and handover of retrofitted homes, for portfolios ranging from single properties to large housing stocks. In 2021 it launched a materials supply service providing installers with discounted products.
Business model
Anesco combines asset-side renewable energy development with services. It develops, builds, operates and maintains solar farms and battery storage projects and offers optimisation and route-to-market services to third-party asset owners. On the efficiency side it operates as a managing agent under the ECO scheme, securing funding from utility companies obliged to meet government efficiency targets and channelling it to accredited installers who deliver measures in homes, plus a materials supply service to installers launched in 2021.
Revenue derives from renewable energy project development and construction, operations and maintenance and battery optimisation/route-to-market services, and from managing agent activity under the ECO scheme funded by energy suppliers. Annual revenue was reported at £70mn as of March 2022, with the company anticipating triple-digit growth as its secured project pipeline entered the build phase.
Traction
As of March 2022 the company reported annual revenue of £70mn, more than 100 solar farms and 30 energy storage facilities constructed in the UK and Europe, five battery storage projects and three solar farms at ready-to-build stage, and 200 UK staff after a 20% headcount increase over nine months. Under the ECO schemes it reports delivering 170,000 measures and lifting more than 225,000 people out of fuel poverty, lowering annual bills by an average of £750.
Latest developments
In March 2022 Anesco secured a £12mn revolving credit facility from Santander UK to fund working capital for its build programme, with five battery storage projects (Dundee, Melksham, Nottingham, Ipswich, Essex) due to be operational by spring 2023 and three solar farms in England and south Wales due to start operating later that year. The company stated plans for organic and acquisitive growth in Germany, the Netherlands and wider Europe and to increase headcount by a further 20-30% over two years. Its ECO business is delivering under ECO4, which runs to 2026, and references funding through the Warm Homes Plan.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Described as an award-winning delivery partner for funded domestic retrofit programmes across Great Britain and among the UK's largest providers of energy efficiency services under the ECO scheme, with one of the largest ECO4 submission and delivery teams in the industry. It cites a series of UK firsts, including the first subsidy-free solar farm (Clayhill, Milton Keynes, 2017), the first battery entered into the National Grid balancing mechanism (2019), the first commercially funded utility-scale battery storage units, the first fully funded residential and commercial solar in the UK, the first fully funded biomass, and introducing the ESCO model to the UK.
The company spans both large-scale generation and storage assets and household-level retrofit delivery, allowing it to serve utilities, housing providers and asset owners from a single platform, and highlights an early-mover record in subsidy-free solar, balancing-mechanism battery participation and fully funded solar and biomass models.
Technology
Grid-scale solar photovoltaic generation and battery energy storage systems, including optimisation of storage assets across electricity markets. Domestic measures include insulation, boiler and first-time central heating installations, air source heat pumps, solar PV and residential battery storage.
Go-to-market
Anesco works directly with utility companies to secure ECO funding and partners with councils, local authorities, social housing providers, landlords and a network of accredited PAS 2030/2035 installers to deliver measures at scale. In renewables it contracts to deliver large-scale solar and storage projects and sells optimisation services to battery asset owners.
Energy suppliers with ECO obligations, local authorities, housing associations, private landlords, homeowners and tenants, Tier 1 contractors and accredited installers, and renewable energy asset owners and investors.
Geography
Headquartered in Reading, England, with operations across Great Britain and Europe. Battery storage projects at ready-to-build stage were located in Dundee, Melksham, Nottingham, Ipswich and Essex, with solar farms in England and south Wales. International expansion was targeted initially in Germany and the Netherlands, with roles planned across the UK, Netherlands and Germany.
History
Anesco was founded in 2010 and is headquartered in Reading. It has acted as a managing agent under the ECO scheme since its 2013 introduction. In 2017 it constructed Clayhill in Milton Keynes, described as the UK's first subsidy-free solar farm, and in 2019 was first to enter a battery into the National Grid balancing mechanism. It launched a materials supply service for installers in 2021 and in March 2022 secured a £12mn revolving credit facility from Santander UK to support its UK and European build programme.
Compiled by commissioned research from 3 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 6
launches, deals, and filingsAnesco states it was recognised as Social Responsibility Company of the Year at the National Energy Efficiency Awards.
Anesco received a £12mn revolving credit facility from Santander UK to support working capital and delivery of its renewable energy developments in the UK and Europe, including five battery storage projects and three solar farms at ready-to-build stage.
The company stated it was targeting organic and acquisitive growth initially in Germany and the Netherlands and more widely in Europe, with new roles across the UK, Netherlands and Germany.
Anesco launched a materials supply service providing its ECO installers with products at reduced prices.
Anesco was reported as the first to enter a battery into the balancing mechanism market with National Grid.
Anesco constructed the Clayhill solar farm in Milton Keynes, reported as the UK's first subsidy-free solar farm.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 3
primary sources listed
- ECO4 - Energy Company Obligation - Anescoeco.anesco.co.uk · web
3 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Anesco do?
- UK renewable energy company developing grid-scale solar and battery storage and delivering ECO-funded home energy efficiency retrofits.
- Who are Anesco's investors?
- Anesco's investors include Ara Partners, Zouk Capital.