Triodos Renewables has extended its crowd funding share issue until the end of January after receiving only £2million of the £5million that it aimed to raise to fund wind farms.
The Dutch bank had been due to close its share issue on 30 November but extended the deadline after only 600 investors chose to pump cash into the offer.
The lender’s renewable energy arm already owns and operates 11 projects in the UK, which together produce 53MW of power.
These include a wind farm at Dunfermline in Fife, a single turbine on Orkney and the Beochlich hydro-electricity project to the south-east of Loch Awe in Argyll.
Raising the crowd funding would allow Triodos to pump cash into the Auchtygills and Clayfords projects near the village of Strichen in Aberdeenshire, where construction began in October.
Investors can take part in the cash call with as little as £50.16.
Matthew Clayton, executive director of Triodos Renewables, said: “We made the decision to offer our lowest-ever minimum investment because we believe that investing in renewable energy should be an option to everyone.
“We have decided to extend the share issue for a further two months as our renewable energy assets continue to grow and because we want to offer a connection with renewable energy for more people.”
Julia Groves, chief executive of Trillion Fund, the crowd funding platform being used by Triodos, added: “Renewable energy can offer decent, steady returns for investors, with the added benefit of knowing your money is doing something good.
“With more than £1billion invested in 2013, ordinary investors are waking up to opportunities to put their money to work.”