And WTF do they think powers a heat pump??? Electricity of course!
;-)
I predict a rapid back flip on these design rules. My back-of-envelope calculation says that SHW with an electric boost (even including possible Carbon Taxes, or compulsory Greenpower, and given the likely trajectory of reticulated gas prices after 2012) will still be the most cost-effective setup for a new house over a 20-year life-cycle for the gear.
Bad luck when the gas runs short, eh?
Between peaking and our desperation to export everything we dig up from Australian soil, that day may not be so far away...
And WTF do they think powers a heat pump??? Electricity of course!
;-)
I predict a rapid back flip on these design rules. My back-of-envelope calculation says that SHW with an electric boost (even including possible Carbon Taxes, or compulsory Greenpower, and given the likely trajectory of reticulated gas prices after 2012) will still be the most cost-effective setup for a new house over a 20-year life-cycle for the gear.
I wouldn't rely on that line of argument - our gas supplies are good for 70 odd years...
http://anz.theoildrum.com/node/4618