Saturday, 24 September 2016

Solar payback

In case you had forgotten, last year I fitted some solar panels up on my roof, a pair of sizable 250w ones. And have been eagerly waiting to see what the results would be.

Its hard to actually measure, as I also made some other small changes in the way I use electricity in the house. I swapped out a lot of my bulbs for LED's and put a 15min on-15 off timer on the air circulation system, as well as a few other things.

I was a bit annoyed that after fitting my panels last year, my leccy bill was actually set higher than the previous year, so I am almost certain I've been overpaying @144 a month it was around 126pm before that.
Well the years invoice came in today, and 3 things caught my eye.

1st a massive rebate of 373 euros :D
2nd a reduction of my bill to 111 pm....
3rd a very small payment for my contribution to the grid, only 1.26 euros, but considering I have something in the house drawing power most of the time, any contribution is brilliant.

I looked up the graph on the company site  to compare past years usage and I seem to be using about 10-20euros less electricity pm...which is the real benefit of the panels. The overcharge amounts for the bulk of the rebate I am sure, but the very fact I get some payment for my electricity means my panels are contributing something to my power usage. I'm estimating about 1/3rd to 1/2 is due to the panels.

Quite pleased by that, in 3-4 years the panels will pay for themselves and still give 6 more years at least of generation, and that's a better investment of the cash spent than a bank account interest would give.

Green is good.


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