tek-monkey
wanna see my snake?
My thinking is unless you're at home all day solar on it's own is wasted, there is no feed in tariff really anymore so you need a battery backup too. Thats starts getting expensive, about 7k min for a 4kw solar setup and a 4.8kwh battery. I use at least 20 units per day, so I'd want at least a 10kwh battery for solar to ever see me through the night. I expect to pay about 11k for that, and it'll generate about 3500kwh/year on average. At current prices thats £700/year, so at least 15 years to repay itself if everything runs optimally and assuming energy prices don't rise. 2 months ago this would have been saving about £525, so much longer to pay off, but energy prices did indeed go up.
What I'm interested in is maybe just getting the battery and a smart tariff, and charging the battery at night giving myself a guaranteed 10kwh/day @5p/kwh. In todays tariffs it'd essentially cut my bill in half, as 10 would be at 75% off and 10 at normal price. My electricity spend is around a grand per year but I guess more now, so halving that without even needing the solar would be great. Balancing the two so I get a full battery on the cheap at night then topped up with solar in the day would obviously be even better, but I need to work out repayment times. If it'll pay for itself within the warranty period at todays prices I'll bite, because in 10 years time it'll be worth lots more to me in savings.
What I'm interested in is maybe just getting the battery and a smart tariff, and charging the battery at night giving myself a guaranteed 10kwh/day @5p/kwh. In todays tariffs it'd essentially cut my bill in half, as 10 would be at 75% off and 10 at normal price. My electricity spend is around a grand per year but I guess more now, so halving that without even needing the solar would be great. Balancing the two so I get a full battery on the cheap at night then topped up with solar in the day would obviously be even better, but I need to work out repayment times. If it'll pay for itself within the warranty period at todays prices I'll bite, because in 10 years time it'll be worth lots more to me in savings.