The National Trust is making its biggest ever investment of £30 million into green energy.
The funding aims to boost renewable energy to heat and power more of the historic places it looks after.
It is making the commitment after reaching targets to reduce its dependence on fossil fuels and cut energy usage by 20% as well as sourcing 50% of its energy from renewable sources on the land it looks after by 2020.
The trust claims the renewable energy programme could help save up to £4 million on its energy costs each year.
Electricity generated from some of the projects will be sold to the grid providing a source of income. In a statement the trust said: “Coupled with the savings made, this will allow us to spend more money on our vital conservation work.”