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We’re people powered

They’re members of the public investing from £100 and getting a fair annual return on their investment.

A ground-breaking solar project

Our bond offer

One great thing about our bonds is that they can be wrapped in an ISA, meaning the interest you earn is tax-free. There’s a fixed interest rate of 5.5% annually, and the bond capital will be repaid after 7 years.

To carry out the bond offer we’ve partnered with ethical finance specialists Ethex – all the details are on their website.

Want to know more?

Rolling share offer

If you’d prefer to support our work by buying shares, our rolling share offer remains open. By buying a share you become a member and get a say in the way we run but your interest payments are not fixed or tax-free

There’s more information about our share offer and a comparison of shares and bonds on our shares page.

More than one type of return

However you choose to invest, we offer different kinds of return on investment:

Environmental

We are a carbon-first initiative. By supporting the Big Solar Co-op you could be doing more for decarbonisation than by investing in solar at home.

Social

We’re lowering energy bills for commmunity sites and local businesses -often in places which are less sunny and less wealthy, with all our surplus re-invested in solar.

Financial

We aim to offer a fair return on your investment. Our interest rates are competitive and tax-efficient.

Invest your time

The Big Solar Co-op has been created from the ground up to enable volunteers to be more effective in fighting the climate crisis. So if you have any time to spare, there are lots of things we can do together, within a supportive and effective organisation.