Quote:
Originally Posted by damien c
Investing the money might yield more than buying a battery system and running it, but what you can do is buy the system and save money each month from your electric bill, then invest that money if you wanted.
I have worked out that it's costing us around £6 per day for my server rack, depending on load.
If I can remove that from the electric bill by spending £1000 roughly, it would take around 13 months to pay that back, but the thing is, that would also drop because if I can output up to 800w from the battery into the mains in the house, we could end up with almost a £0 an hour bill unless the load on the house goes above that 800w.
Let's say that saves me the roughly £180 a month, we could invest 50% of that each month and then see what happens but for now, it's just hypothetical because I currently don't have the cash for it as it is, I am getting closer but not there yet.
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Solar and batteries are the way to go. Our system has been in about 13 months now and our direct debit has dropped from £211 this time last year to £122. We've just had a refund from EDF of £1322.46. I think realistically the monthly cost will settle at about about £95. So we're saving about £115 on the gas and electricity bills AND as we've gone electric on the car so we're also saving £300 to £350 a month on petrol. Assuming a saving of just £400/month the system would pay for itself in less than 2.5 years.