Going “green” has a cost implication. As much as environmentalists and others with vested interests try to sugar coat the pill, it all comes down to money. I want to see a return on my investment.

My interest in renewable home energy is purely a selfish one; I want to retain as much of my earnings as possible and to spend it as want to. And I ultimately want to be able to live off the grid, which means no longer paying ever-increasing electricity bills.