we'll here goes about to sign for them £10.5k. Buying solar panels with rainy day fund. How ironic is that
rob

If you can afford the capital it's a no-brainer. We put a 3.96kW array on our barn when we moved here. It cost £15k to install, and we got an interest-free loan for some of it from EST.
I'm not completely obsessed (yet), but did pop out this evening to see how much we'd generated today - 22.76kW by about 7pm = about £10 for the day from the FIT, plus the free electricity. It's been a fairly sunny day, am looking forward to seeing what its peak output is in summer.
In April we generated 456 kW in 27 days, an average of £7 income per day from the FIT.
We've got an efergy meter too, so we can see what we're using. It *really* concentrates the mind to how much electricity you're consuming right now.