Discuss 5 Min Survey at Customer's House in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net
I don't know how these things work up there. Down here, they are viable because we're all paying for them. You sell all the energy you make at about three times the price you buy it back and then use it. Which means it costs 5 times as much to make then the one from the dreaded nuclear plants.
Im sure north side panels are economically feasible, especially for the guys selling and installing them.
It's a small commercial swimming pool rather than a luxury private one - it's part of a farm diversification project. Problem is it's competing with the cost of biomass which will save more, quicker and then he'll have the cash for pv - that's what I've advised him to do, along with voltage optimisers for the pumps. He's got other projects he's doing as well so he's having to prioritise.
I'm pleased he's now got some decent information to make his decision with even if it means we don't get work from it. I haven't done the full quote but it probably does pay off with a low interest loan but to as quickly as biomass - he's cutting his oil bills by 40% even without the RHI.
Gavin - I'll have you know we had a whole hour of sunshine today! It was a record though lol.
Its a 6 kWp system limited to 3.68 kW with less than 1% losses due to the differing orientations and 30 degree angle of the roof. The peaks of the two arrays will be early-mid morning and mid afternoon lending itself well to self consumption.
Its difficult to be precise on the expected savings but with annual consumption of 20,000 kWh a good chunk of the PV system will be used on site.
Usually I would expect savings to be in the £150-£200 mark with customers with average size electric bills.
for high energy users we tend to work on it becoming economically viable above about 4.5kWp, with 4-4.5kWp being the no go zone, and most being 5kWp for south facing, or 5.5-6.5kWp for east / west, roof space allowing, all within the 16amp AC output limit.Hi Ian, remember based on the new MCS and Ofgem interpretations even limited to 3.68kW he'll only get the 4-10kWp tarrif (I know it's not a big difference these days)
Reply to 5 Min Survey at Customer's House in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net
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