gloat

[goddessfarmer]

Last Month's electric bill: $300
This Month's electric Bill $75
at current electric rates, payoff is 44.4 years. But then if you take into account not loosing food, having the house freeze and burst pipes, peace of mind, etc when the grid goes down.....
So, if we have one multi-day outage per year (which isn't unusual around here) and estimate that the freezer has $1000 worth of meat in it, that reduces the payoff time to 32.4 years.
That's still not taking into account that once every 5 years we have a significant outage in cold weather which could cause frozen pipes and $10,000 in damage.... so if that happened even once, that knocks it down to 29.7 years.
And if the price of electricity goes up, which I can't imagine it not doing, even by .5% a year on average..... OK, now I need a spreadsheet and not a tiny piece of scrap paper, so I'm going to stop with the math.

My point here, is that this system is highly likely to pay for itself before I die, so long as I live to a natural expected age. Which I fully intend to do, damn-it.

Photovoltaics for the win.

Comments

[intuition-ist.livejournal.com]

so... total initial cost of the system is ~$100k?

[goddessfarmer.livejournal.com]

120K roughly. I didn't count the cost of the little system I put in the new barn (another 12K) because that's about how much it would have cost to get grid power to that barn, so it paid for itself the day it first pumped water.