Solar cooperatives are playing an increasingly important role in the UK’s energy transition. The Community Energy State of the Sector 2025 report found that 62 cooperatives were among the 614 organisations delivering community energy schemes in 2024, generating a record 575 GWh of renewable electricity. UK community renewable energy capacity has now reached 411MW, with solar PV accounting for 266MW of this total. From pioneering projects like Westmill Solar Co-operative, the UK’s first community-owned solar farm established in 2012, to newer initiatives like Big Solar Co-op targeting large commercial rooftops, the cooperative model offers a distinctive approach to renewable energy development.
Solar cooperatives differ from commercial developers in fundamental ways. They are owned by their members rather than shareholders, operate democratically with one member one vote regardless of investment size, and exist primarily to benefit the community rather than generate profits. Surplus income is reinvested locally through community benefit funds, supporting everything from fuel poverty initiatives to nature conservation. Support organisations like Energy4All, Sharenergy, and Communities for Renewables have helped develop over 100 community energy projects between them, managing nearly 50MW of community solar across diverse localities.
This guide explains how solar cooperatives work in the UK, covering the legal structures, cooperative principles, how to invest through share offers, existing UK solar cooperatives, support organisations, and how to start a new cooperative. Whether you want to invest in a local energy co-op, understand the cooperative model, or start a solar cooperative in your community, this guide provides the essential information.
Quick Overview
| UK community energy capacity (2024) | 411MW total; 266MW solar PV |
| Community energy generation (2024) | 575 GWh (powers 212,000 homes) |
| Energy cooperatives in UK | 62 co-ops among 614 community energy organisations |
| First UK community solar farm | Westmill Solar (2012, 5MW) |
| Support organisations | Energy4All (30+ co-ops); Sharenergy (100+ projects); Communities for Renewables (50MW managed) |
| Typical share investment | £100 to £100,000 |
What Is a Solar Cooperative?
Definition
Solar cooperatives sit within the wider category of community solar projects – but with a specific legal and ownership structure that distinguishes them from other community schemes.
| Feature | Description |
|---|---|
| Ownership | Members own the cooperative collectively through shares |
| Governance | Democratic; one member one vote regardless of investment size |
| Purpose | Benefit members and community; not profit maximisation |
| Surplus use | Interest to members; community benefit fund; reinvestment |
| Registration | Registered with Financial Conduct Authority (FCA) as society |
Co-op vs Commercial Solar
| Aspect | Cooperative | Commercial |
|---|---|---|
| Ownership | Members (local people) | Company/investors |
| Control | Democratic; volunteer directors | Directors/shareholders |
| Profits | To members and community | To shareholders |
| Primary purpose | Community benefit | Financial return |
| Investment access | Open share offers | Usually closed |
| Local focus | Strong local connection | May be distant |
International Cooperative Principles
| Principle | Application to Solar Co-ops |
|---|---|
| Voluntary membership | Open to anyone who accepts responsibilities |
| Democratic control | One member one vote; elected directors |
| Member economic participation | Members contribute capital; share surplus fairly |
| Autonomy and independence | Controlled by members |
| Education and training | Inform members and public about cooperation |
| Cooperation among cooperatives | Work together; support networks |
| Concern for community | Sustainable development of community |
Legal Structures for Solar Cooperatives
Cooperative Society
| Feature | Details |
|---|---|
| Legal basis | Co-operative and Community Benefit Societies Act 2014 |
| Registration | Financial Conduct Authority (FCA) |
| Purpose | Primarily benefit members |
| Ownership | Owned by members |
| Governance | One member one vote |
| Examples | Westmill Solar Co-operative, Brighton Energy Co-operative |
Community Benefit Society (BenCom)
| Feature | Details |
|---|---|
| Legal basis | Co-operative and Community Benefit Societies Act 2014 |
| Registration | Financial Conduct Authority (FCA) |
| Purpose | Conduct business for benefit of the community |
| Asset lock | Assets locked for community benefit |
| Governance | One member one vote |
| Examples | Heart of England Community Energy, Edinburgh Community Solar |
Comparison of Structures
| Aspect | Cooperative Society | Community Benefit Society |
|---|---|---|
| Primary beneficiary | Members | Wider community |
| Asset lock | Optional | Mandatory |
| Charitable status | No | May be exempt charity |
| Typical use | Member-focused co-ops | Community energy projects |
FCA Registration
| Requirement | Details |
|---|---|
| Registered rules | Must have approved rules governing society |
| Annual return | AR30 form submitted to FCA each year |
| Financial reporting | Accounts prepared and submitted |
| Member register | Maintain register of members |
| Audit | May be required depending on size |
How Solar Cooperative Shares Work
Share Basics
The co-op share model sits alongside other alternative funding routes for community solar – see our guide to crowdfunding solar projects for a comparison of how these investment models differ.
| Feature | Details |
|---|---|
| Minimum investment | Typically £100 to £250 |
| Maximum investment | Often £100,000 |
| Share type | Withdrawable shares (not tradeable) |
| Voting | One member one vote regardless of shares held |
| Interest | Typically 4% to 7% annually |
| Term | Usually 15 to 25 years |
How Returns Work
| Income Source | How It Benefits Members |
|---|---|
| Electricity sales | Revenue from selling power to grid or host |
| Power purchase agreements | Income from supplying host buildings |
| Smart Export Guarantee | Payment for exported electricity |
| Interest payments | Annual interest to members from surplus |
| Capital repayment | Original investment returned over time |
Risks and Considerations
| Risk | Details |
|---|---|
| Capital at risk | Possible to lose some or all investment |
| Not FSCS protected | Financial Services Compensation Scheme does not cover |
| Illiquid | May not be able to withdraw early |
| Returns not guaranteed | Depend on project performance |
| Long term | Typically 15 to 25 year commitment |
| Project risk | Technical issues, grid problems may affect income |
UK Solar Cooperatives
Pioneering Solar Cooperatives
| Cooperative | Location | Capacity | Established | Key Features |
|---|---|---|---|---|
| Westmill Solar | Oxfordshire/Wiltshire | 5MW | 2012 | First UK community solar farm; 2,374 members; 20,000+ panels; 4.8 GWh/year |
| Bath and West Community Energy | Somerset/BANES | Multiple sites | 2010 | Schools, community buildings, solar farms; 2MW Compton Dando farm |
| Brighton Energy Co-operative | Sussex | Multiple rooftops | 2012 | Rooftop solar on community buildings |
| Brixton Energy | London | 37kWp+ | 2012 | First inner-city co-op solar on social housing; Repowering London |
Large Scale Solar Cooperatives
Community-scale solar farms often sit on agricultural land – our guide to solar panels for farms covers the landowner side of these arrangements.
| Cooperative | Location | Capacity | Details |
|---|---|---|---|
| Heart of England Community Energy | Warwickshire | 15MW | One of UK’s largest community solar farms; 60,000 panels; since 2016 |
| Ray Valley Solar | Oxfordshire | 19MW | At one time largest community-owned; adding 3MW/12MWh battery |
| Sheriffhales Solar | Shropshire | 3.2MW | Powers 825 homes; community benefit society |
| Kent Community Energy | Kent | 5MW+ | Ground-mount farm plus rooftop portfolio |
Regional Solar Cooperatives
| Cooperative | Region | Focus |
|---|---|---|
| Low Carbon Hub | Oxfordshire | Schools, community buildings, Ray Valley solar |
| BHESCo | Brighton and Hove | Solar Powered Communities; neighbourhood scale |
| SELCE | South East London | Schools; LED and solar projects |
| Grimsby Community Energy | Lincolnshire | 534kW on community buildings |
| Edinburgh Community Solar | Scotland | Community benefit society; FCA registered |
| North Kensington Community Energy | London | Community fund; energy efficiency |
Big Solar Co-op
| Feature | Details |
|---|---|
| Focus | Large rooftops not being developed commercially |
| Model | National co-op; volunteers find and deliver local projects |
| Capacity deployed | 1.2MW+ across 12 rooftops (as of 2025) |
| Pipeline | 40+ sites signed up |
| Ground-mount | Whiteborough Solar Park (3.5MW, former coal mine) |
| Share offer | Rolling; always open |
| Target return | 5% (or 2% above base rate) |
| Volunteer membership | £1 to become volunteer member |
| Awards | Community Energy Excellence Award 2025 |
Support Organisations
Energy4All
| Feature | Details |
|---|---|
| Role | Supports renewable energy cooperatives in UK |
| Member co-ops | 30+ renewable energy cooperatives |
| Technologies | Wind, solar (ground and rooftop), biomass, hydro |
| Services | Development, share offers, operations management |
| Share offers | Lists current offers from member societies |
| Community map | Shows all member co-ops and renewable sites |
Sharenergy
| Feature | Details |
|---|---|
| Role | Generates renewable energy co-ops |
| Track record | 100+ community energy projects since 2011 |
| Services | Development support; Big Solar Co-op partnership |
| Focus | Helping communities start co-ops |
Communities for Renewables (CfR)
| Feature | Details |
|---|---|
| Role | Community interest company supporting local energy |
| Solar managed | Nearly 50MW across 7 localities |
| Share raises | £10 million+ for community benefit societies |
| Projected surplus | £20 million over operational lifetimes |
| Services | Development, finance, company/asset management |
| Operating since | 2012 |
| Localities served | 40+ from villages to cities |
Repowering London
| Feature | Details |
|---|---|
| Role | Supports London communities to build solar co-ops |
| Co-ops established | 10 energy cooperatives across London |
| Model | Community Benefit Society for each project |
| Community funds | £200,000+ ringfenced across London co-ops |
| First project | Brixton Energy Solar 1 (2012) |
| Focus | Social housing estates; fuel poverty |
Community Energy England/Wales/Scotland
| Organisation | Role |
|---|---|
| Community Energy England | Membership body; share offer listings; State of Sector report |
| Community Energy Wales | Welsh community energy support |
| Community Energy Scotland | Scottish community energy support |
How to Invest in a Solar Cooperative
Finding Share Offers
| Source | Description |
|---|---|
| Community Energy England | Lists current share offers from member groups |
| Ethex | Impact investing platform; hosts many co-op share offers |
| Energy4All | Share offers from member societies |
| Local co-op websites | Individual groups advertise offers directly |
Current Share Offers (Examples)
| Cooperative | Project | Target Return | Min Investment |
|---|---|---|---|
| Kent Community Energy | Rooftop portfolio (490kW) | 6% | £100 |
| BHESCo | Solar Powered Communities | 5% | Varies |
| Big Solar Co-op | Rolling offer; large rooftops | 5%+ | Varies |
| Bath and West Community Energy | Compton Dando solar farm | 5.75% | £100 |
| Grimsby Community Energy | Open offer; 1MW target | Varies | £100 |
| Thrive Renewables | 2026 bond; wind/solar | Varies | Varies |
Investment Process
| Step | Details |
|---|---|
| 1. Find offer | Browse Community Energy England, Ethex, or local co-op sites |
| 2. Read documents | Review share offer document; understand risks |
| 3. Register | Create account on platform (e.g. Ethex) |
| 4. Apply | Complete application; choose investment amount |
| 5. Payment | Transfer funds; receive share certificate |
| 6. Membership | Become member; receive updates; vote at AGM |
Community Benefits
How Co-ops Generate Community Benefit
Co-op host buildings are often community anchor institutions – schools, churches and community centres. Our guides to solar panels for schools and solar panels for churches cover how these institutions work with co-ops and other delivery models.
| Mechanism | Details |
|---|---|
| Community benefit fund | Portion of surplus allocated to local grants |
| Interest to members | Local people earn returns on investment |
| Host building savings | Schools, charities get reduced electricity costs |
| Fuel poverty work | Funds directed to energy advice and efficiency |
| Education | Site visits; school engagement; training |
| Local employment | Installation and management jobs |
Examples of Community Benefits
| Cooperative | Community Benefit |
|---|---|
| Westmill Solar | £30,000 grants in 2025; 1% revenue to WeSET charity; free energy audits |
| Heart of England | Funds Act on Energy for fuel poverty support; GP practice engagement |
| South Dartmoor | Community orchard; village playground; Scout group |
| Wiltshire Wildlife Community Energy | £45,000+ to community fund |
| North Kensington | £6,000 to £9,000 distributed locally |
| Repowering London co-ops | £200,000+ ringfenced across London |
Host Building Benefits
| Building Type | Typical Benefit |
|---|---|
| Schools | Save up to 50% on electricity; educational value |
| Community centres | Reduced running costs |
| Charities | Lower overheads; more for mission |
| Social housing | Reduced bills for residents |
| Heritage buildings | Sustainable operation |
Starting a Solar Cooperative
Key Steps
| Step | Actions |
|---|---|
| 1. Form group | Gather interested local people; establish steering committee |
| 2. Seek support | Contact Energy4All, Sharenergy, Big Solar Co-op, or CfR |
| 3. Identify sites | Find suitable rooftops or land; negotiate access |
| 4. Feasibility study | Technical and financial assessment |
| 5. Register society | Register with FCA as co-op or BenCom |
| 6. Planning/grid | Obtain permissions; apply for grid connection |
| 7. Share offer | Prepare documents; launch on Ethex or similar |
| 8. Installation | Procure and install system |
| 9. Operation | Manage; pay returns; distribute community benefit |
Big Solar Co-op Volunteer Model
| Feature | Details |
|---|---|
| Concept | National co-op supports local volunteers to deliver projects |
| Volunteer membership | £1 to join; get training and support |
| Find sites | Identify local rooftops crying out for solar |
| Design and deliver | Big Solar Co-op provides technical and financial support |
| No existing group needed | Can deliver even where no community energy group exists |
Challenges
| Challenge | Details |
|---|---|
| Grid connection | Delays and costs; major barrier |
| Volunteer capacity | Reliance on unpaid volunteers in early stages |
| Development finance | Costs before share offer can be raised |
| Technical expertise | Need professional support for complex projects |
| FCA compliance | Registration; annual returns; rules |
UK Community Energy Statistics
State of the Sector 2025
| Statistic | Figure |
|---|---|
| Community energy organisations | 614 |
| Of which cooperatives | 62 |
| Total community capacity | 411MW |
| Solar PV capacity | 266MW |
| Wind capacity | 132MW |
| Hydro capacity | 13MW |
| Electricity generated (2024) | 575 GWh |
| Homes equivalent | 212,000 |
Growth Over Time
| Milestone | Year |
|---|---|
| Westmill Wind Co-op | 2008 (first South England co-op wind) |
| Westmill Solar | 2012 (first UK community solar farm) |
| Brixton Energy Solar 1 | 2012 (first inner-city co-op solar) |
| Heart of England 15MW | 2016 (large-scale community solar) |
| Community Energy Together transfer | 2025 (35MWp; largest transfer ever) |
| Local Power Plan | 2026 (£1bn government support) |
International Comparison
| Country | Citizen Energy Share |
|---|---|
| Denmark | 50%+ of wind is citizen-owned |
| Germany | ~50% of solar is citizen-owned |
| UK | Growing; Local Power Plan aims to scale up |
| REScoop.eu members | 2,500 energy co-ops; 2 million+ citizens |
Future of Solar Cooperatives
Local Power Plan Support
| Support | Details |
|---|---|
| Funding | Up to £1 billion from Great British Energy |
| Target | 1,000+ community projects by 2030 |
| GBE Community Fund | £5 million to 60+ projects (January 2026) |
| Regulatory reform | Tackling grid connection barriers |
| Shared ownership | Mandatory scheme under review |
Sector Ambitions
Co-op delivery models are also expanding beyond traditional rooftop and ground-mount projects. See our guides to floating solar farms and ethical solar panel sourcing for how community projects are innovating on siting and procurement.
| Target | Details |
|---|---|
| 8GW by 2030 | Community and locally owned power target |
| Energy efficiency | 151 organisations now engaged (record) |
| Innovation | Battery storage; local supply; flexibility |
| Diversity | Heat networks; transport; demand response |
Frequently Asked Questions
Basic Questions
| Question | Answer |
|---|---|
| What is a solar cooperative? | Member-owned organisation that develops and operates solar projects for community benefit |
| How much can I invest? | Typically £100 minimum to £100,000 maximum |
| What returns can I expect? | Usually 4% to 7% annual interest; varies by project |
| Is my money protected? | No; capital at risk; not covered by FSCS |
| How do I vote? | One member one vote at AGM regardless of shares held |
Practical Questions
| Question | Answer |
|---|---|
| Where do I find share offers? | Community Energy England; Ethex; Energy4All; local co-ops |
| Can I withdraw my investment? | Usually difficult; shares typically held for project lifetime |
| What if the project fails? | You may lose some or all investment |
| How do I start a co-op? | Contact support organisations; form local group; register with FCA |
Summary
| Aspect | Key Point |
|---|---|
| UK community solar capacity | 266MW (of 411MW total community renewable) |
| Cooperatives active | 62 among 614 community energy organisations |
| Pioneer project | Westmill Solar (5MW, 2012, 2,374 members) |
| Large-scale example | Heart of England (15MW, 60,000 panels) |
| Support organisations | Energy4All; Sharenergy; Communities for Renewables; Big Solar Co-op |
| Investment range | £100 to £100,000; typical returns 4% to 7% |
| Government support | £1 billion Local Power Plan; 1,000+ projects target |
Solar cooperatives represent a distinctive and growing model for renewable energy development in the UK. Unlike commercial projects owned by distant investors, cooperatives are owned by their members, operated democratically, and exist primarily to benefit the community. The 62 cooperatives among the UK’s 614 community energy organisations have helped build 266MW of community-owned solar capacity, with pioneering projects like Westmill Solar demonstrating the model’s viability since 2012. Support organisations including Energy4All, Sharenergy, and Communities for Renewables have collectively developed over 100 projects and now manage nearly 50MW of community solar.
Investing in a solar cooperative offers returns typically between 4% and 7% annually while directly supporting renewable energy in local communities. Unlike conventional investments, cooperative shares come with voting rights regardless of the amount invested, allowing members to shape how their co-op operates. The Big Solar Co-op model even enables volunteers to find and deliver solar projects in areas without existing community energy groups, supported by the national co-op’s technical and financial resources. Share offers are available through platforms like Ethex and Community Energy England, with investments starting from as little as £100.
The sector faces challenges, particularly around grid connection delays and the reliance on volunteers during development phases. However, the £1 billion Local Power Plan launched in February 2026 represents unprecedented government support, with Great British Energy targeting over 1,000 community projects by 2030. The State of the Sector 2025 report confirmed record electricity generation from community renewables, with 575 GWh produced in 2024, equivalent to powering 212,000 homes. With proper support, the ambition of 8GW of community and locally owned power by 2030 appears achievable.
For communities and individuals interested in taking control of their energy future, solar cooperatives offer a proven model. Whether investing in an existing co-op, joining as a volunteer member of Big Solar Co-op, or starting a new cooperative with support from organisations like Energy4All or Sharenergy, the pathway to community-owned solar has never been clearer. The cooperative principles of democratic control, member economic participation, and concern for community align naturally with the transition to clean energy, making solar co-ops a powerful tool for both climate action and local economic development.
Before investing, read the share offer document carefully – particularly the risk section, project timeline, and what happens if returns underperform. These are long-term commitments (15-25 years typically) and shares are not FSCS-protected. Only invest money you won’t need access to in the short term.
If starting a co-op, don’t try to do it alone. Energy4All, Sharenergy and Communities for Renewables have delivered dozens of projects between them and can save years of trial and error. Their fees are usually deducted from the share raise rather than upfront cost to the steering group.
