Yes but missing the angle that if you don't get it and wait for 5 years, then you've just paid for 5 years of higher costs and that's money that could have been going towards paying for the panels.
Solar is great if you can install it for a reasonable price and have the affordability to get it, and the main benefit is the piece of mind it brings with monthly electric costs being lower.
Full solar install though is best if you can make good use of most of the energy generated, they will work better for people who use a lot of electric. Light users won't see much of a benefit.
Unfortunately for us, we are quite light users as we aren't using much during the day, unless it's school holidays.
My plan is that during the winter if there's enough sun, I want to leave some electric radiators on to keep the temps up in the house. That way if the battery is full then we can use that energy to heat up the house for when we get in.
Most of our use is during the evening when there's going to be no light, so we need 15-20kw of battery storage to use some electric heaters etc.
Then they can be topped up over the next day or two if there's enough sun. If we can get on a cheapo night tarrif then if there's no sun we can just charge the batteries on the night tarrif.
Unfortunately, we don't have an EV vehicle and aren't likely to be getting one soon either so I'm not sure how we can sneak on to the Octopus Go tarrif!