I don't often rise to the bait, and at the risk of starting a flame war....
It seems to me question this is about "and" rather than "or"....
Kudos for designing and building what sounds like a superinsulated home with a real and realistic recognition of
site and sun. These are good things, as was planning for hoped for photovoltaics. Would that more folks had done that while building 30 years ago. We'd perhaps be in better shape now.
(I must confess I am far less excited about a 5200 square foot house but I don't know your needs and that is your call and your responsibility.)
At the same time, and all your achievements recognized, they don't justify ad hominem attacks or change the reality of climate change science. Calling Al Gore, and those who may agree with him in whole or part, names doesn't seem useful in addressing our situation. And cherry picking data makes for bad science, bad (though sometimes winning) politics, and bad (though sometimes rewarded and awarded) architecture.
I truly wish we had cheaper photovoltaics, though good, or even great, efficiency design (buildings, engineering systems, and appliances) may be as valuable, or more valuable in many cases. It is at the very least complementary.
(A few perhaps rhetorical questions....Was there a premium to build your house over standard construction in 1979? If so, how much? Of course that additional cost needs to be figured into any payback analysis. It sounds as if the house all electric. True? Do you use any auxilary systems for heat (wood, pellets, etc.)? Do you use solar hot water? If not , what is your heat source?
Never trust an architect on numbers, but worst case seems to be 12 months x $130 or $1560/yr. $1560/5200 sf = $0.30/sf/yr.) If you are truly heating and cooling a house, regardless of size and including domestic hot water and lighting for 30 cents a square foot a year, bravo.
But payback is a seperate question. It is function of cost construction cost but also utility cost. We have provided structural, long term economic subsidies to oil and coal and natural gas for years. If we were to remove them, or have never had them, your electricity, which is presumably from the grid, would be considerably more expensive. This off course would shorten your payback proportionally. And that sets aside the socialized downstream costs of the operation of the various power sources which turn into costs on the body politic but might also be argued belong to the utility and its customers. Or we could subsidize photovoltaics, etc as new technologies (as we did oil andcoal and gas) and allow mature profitable technologies support themselves. And of course paybacks shorten as utility costs rise.
I confess that none of these arguments are new. But I find the polemic frustrating.
So hurrah for doing good and using less. Hurrah for caring about the issue. Hurrah for, though it may pain you and be unintentional, addressing the very issues raised by Mr. Gore. But solving part of a problem, however elegant and effective the solution doesn't make other parts go away.
We answer the questions we ask.
Regards
Marc
Marc Shaw AIA
Arlington VA
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