But for the most part you aren't saving £100 a month to pay out £75 a month, not even close. You are only breaking even on installs after 12yrs+ and that is without a loan and interest rates. You are assuming either very low/0% interest but most people on perosnal loans will be averaging a further 10-15% interest rate to borrow such monies so now you are waiting to break even for possibly 20yrs+ then. That is then assuming you even get approved for such large borrowing which a lot of people on lower income wont even be able to borrow.
Not really no
You cant say in regards payback without some reasonable modelling.
If prices go up in April again (as expected) the payback comes down again. Its all a gamble but right now most people should be seeing 6 or so year paybacks.
I said it really suits medium to high users.
An online solar calculator says I could generate circa 3500 kWh per year for an install cost of £6k. £6k is £115 per month repayment over five years.
I use about 2000 kWh of electricity per year, at 33p that is £55 per month. So even if all my usage was offset, it wouldn't cover the loan repayment.
That doesn't include batteries. Adding batteries would add much more to the install cost, and without an EV you can't get on the only beneficial tariff that I would need to get good nighttime top up rates (Octopus Go).
Adding batteries is no good unless I reconfigure the house to use electric heating/electric hot water, without doing that I can't offset any gas use. So there is more cost there.
Seems the only way to offset a good proportion of gas use is to use a heat pump. Install for one of those systems is £10-15k, possibly with a £5k grant. I don't know how much gas use it would offset, and whether it would work well enough in an older solid walled house with poor insulating properties. But lets say it offsets half my gas use, so 5,000 kWh a year. That is £500 at 10p per unit or about £50 per month. A £10k loan over 5 years is £200 per month.
Yeah see two things kick in here, your a low user and solar doesn't suit low users as I said.
If of course the export paid a fair price (you can get this but its a risk) you would find it was much close to cost neutral per month and in 5 years time you would be pretty much getting that energy for free.
We need some more "fair" tariff development here.
For a pretty small amount (£350 or so) you can send elec to immersion rather than exporting excess solar, but you need a hot water tank of course which many do not have. If your combi this option is closed to you.
But this is not really the discussion area for here so sorry for sidetracking. It was really just an observation that many people could do their bit for energy security, but don't, and expect others to do it.
Then they will complain the others are making money....
Go stuff seems a bit random. Its supposed to be an EV tariff but its been around a long time and never been gatekept, only some rumour it is now, its certainly not 100% gatekept. You pay more for units for 20/24 hours anyway so its not without some risk for people who don't have guaranteed high usage.
Go faster however IS, and I suspect some people get them mixed up and hence the confusion. Go faster seems like it might have been pulled, but its never been openly published on their website from what I can see, just an upgrade option for those on go from what I can tell.