Then there's
initiatives like Kindle Unlimited ---- basically, Spotify for Kindle titles ---- and Amazon Prime membership, which
grants you access to the Kindle Lending Library, where you can, as the name suggests, borrow eBooks for a fixed term for absolutely nothing (
save for the cost of your Prime membership).
There are, however, a series of
grants currently available from SEI for various energy
saving initiatives and details of these can be found at http://www.sei.ie/
grants/.