fitted first woodstove in 1973, still have the first one, regretfully no longer made, main heating from a self designed,wood stove now made for me I have to confess its brill, stays alight for up to 24hrs,. but sell many leading brands, fitted solar thermal to my house in 1983, now relaced in 2007, with kit we sell and install, fitted solar voltaic, in 2010, waiting for my inverta to arrive, so cant tell much about it yet , But I will !!!, Rain water havesting since 1989, use on garden and in ground floor toilet , but may extend this year to one washing machine, That washes dust sheets,as I have two,machines