NS&I are soon to launch Green Savings Bonds, where any money invested will also help finance green spending projects.
The 3-year fixed-term Green Savings Bonds will be available to buy online. Savers will be able to invest between £100 and £100,000.
Once invested there won’t be access to the money until it reaches the end of its term, but in return the bond will pay a guaranteed fixed rate of interest for three years.
More information can be found here - although the 2 key pieces of information - the date and the rate - are not yet available!