Originally Posted by Webby

Good starting point dave

We are working on a masterplan for project with elements like that - basically covering an area where the power supply is self-generated (green), the water is self-supplied (actually mineral water and better than the national grid) and basic foodstuffs/veg are organically grown (often using hydroponics).

Bottom line - there is no requirement for national grid power/water and saves around $250K/year for an initial investment cost of around $400K. Kinda no-brainer stuff.