Re: In terms of watts per dollar...
> A new solar water heating installation costs about £3,000 to £5,000.
That number is either way out of date or exaggerated due to your local geographical, regulatory and supply considerations. Here in Australia you can get 300L systems from AU$3500 installed before rebates, so that drops to around 2.5K retail. Payback vs 27c/kWh is much quicker than in your scenario.
Biting the hand that feeds IT
