Going green in Ghana (Accra)

For a house that i am currently building in Ghana I want to go a bit green. Therefore I am looking for people who can help me with following;
Solar system, established make
Wind energy systems
Water systems from borehole to purification
Garbage incinerator units
Any suggestions will be much appreciated
So far i have only found 2 companies in Ghana who supply and install solar systems; SolarLight and Nyansaposolar. But the systems they have on offer are a bit low in capacity