Zanussi Solar Quote

Hiya lucylou.

Tricky part here is that without knowing how many, and what type of panels can be fitted, it's tricky to work out the rest.

But for now, based on the numbers you've given, I'd guess that the annual generation is based on a 4kWp system.

The generation tariff and export tariff look correct, and I think they've used a 2.5% inflation rate to get to those 20yr totals, which doesn't seem unreasonable.

But, the leccy savings look over egged. Typically on here folk suggest savings of £120 pa. You can do better, but it depends on the size of the system, how much you consume, and if someone is home during the day to switch things on (eg dishwasher, washing machine) to make most use of sunshine.

As you have a high consumption, nearly twice the average, you would probably save more, perhaps £150 pa or more, but obviously this is a guess.

From that £150pa we can use their FiT tariff figure since that is also £150pa, giving you perhaps another £3,960 in savings, but not the nearly £12k they suggest (for 25yrs).

If you can measure your roof, then it's easier to estimate what will fit on, and from that what you could earn. If you're able to measure it from the inside, that'll give a fairly good estimate of the useable space on the outside (as spare needs to be left all round).

For a 4kWp system, ideally you want to try to get it for about £5k, but the market is all over the place now, as a lot of companies have gone bust due to some subsidy changes in 2016.

For general background see the FAQ's, link in my autosig.

Hiya, if the roof is roughly 11m by 4m, then there should be room for 10 panels portrait wide, by 2 panels high, so up to 20 panels. Normal panels are 1m wide and 1.6m tall.

Ideally you would be looking at 285Wp panels minimum, so that gives you around 5.7kWp. So a 5kWp to 6kWp system would be very nice, and as you go bigger, the price gets proportionately cheaper, as there are a lot of fixed costs.

So 6kWp for £7k or less perhaps.

Just to warn you that if going that big you might want an inverter that can output more than 3.68kW, and that will require prior permission from your DNO (district network operator), but the installers will research this beforehand for you.

So sounds like you have a good roof, just need to find a good price.

As you have high consumption, and potentially a large PV system, then you'd probably benefit from some sort of battery storage.

But batts are still very expensive, and not yet viable, however they are falling fast in price, so something to keep abreast of for 2020 perhaps. Some news on batts in this thread.

All the best.

Martyn1981 wrote: »

... For a 4kWp system, ideally you want to try to get it for about £5k, but the market is all over the place now, as a lot of companies have gone bust due to some subsidy changes in 2016 ....

Hi

Interesting set of pv installation price analysis charts (set of 4) by the various FiT bandings here ... https://vriconian.wixsite.com/site/single-post/2017/06/16/UK-Solar-PV-Installation-Cost-Analysis-April13-March17---1-4kWp ...

As the prices shown are averaged over a considerable number of installations, anyone should obviously look to pay below the lowest of the average or trend line - The difference between the mean and median average obviously shows that some customers are paying well over the odds, so it would probably be best to compare to the lower (median) measure.

HTH
Z

Martyn1981 wrote: »

Yep, and most of the quotes seem to be from my posts.

.... :rotfl::rotfl:.... probably because you post so much ... :T ... After-all, random selection for copy/paste must logically be subject to the law of averages as applied to the available resource ...

Z