For organisations in Merseyside, The Green Machine awards grants between £50 - £500 to community and voluntary groups,
to support projects that will enhance the local environment.
Many environmental improvements save resources such as energy and wate, which should make them good investments in the long term. So it makes sense to explore the possibility of loans. Apart from trying your own bank, you could look into:
Charity Bank can offer loans for between £5,000 and £750,000, to be repaid over a period of between six months and ten years (25 years for loans secured on property) at affordable interest rates of between 5% and 7%. There is a one time an administration charge of 1% of the approved loan value, but no early repayment penalties are levied.