Solar quotes - Confused!

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My wife and I are really interested in getting solar panels, partly to save some money but mainly to lower our reliance on fossil fuels.
Our house has two roofs, one adjacent to the other. One is flat and the panels (8) can be orientated directly south with no shading. The other is pitched and faces slightly south west with no shading (6).
Quote 1 was through the local council scheme and involved 6 x 380w panels at £4700. I didn't get much more detail on this because it looked like such a poor deal.
Quote 2 is from a recommended local installer for 14 x 340w JA Solar panels, Solis hybrid inverter, flat and pitched roof renusol mounting systems, all cabling etc for £5,690. That price seemed OK to me £1.19 per kwh), is it?
It doesn't come with any optimisers, would this make much of a difference in our application? Is there a benefit to having 340w panels vs a lower number of higher wattage ones? We are currently with Shell Energy and their SEG rate is 3.5p per kwh, would I be able to switch to someone with a better rate now or will I be stuck with Shell until the market calms down?
Our house has two roofs, one adjacent to the other. One is flat and the panels (8) can be orientated directly south with no shading. The other is pitched and faces slightly south west with no shading (6).
Quote 1 was through the local council scheme and involved 6 x 380w panels at £4700. I didn't get much more detail on this because it looked like such a poor deal.
Quote 2 is from a recommended local installer for 14 x 340w JA Solar panels, Solis hybrid inverter, flat and pitched roof renusol mounting systems, all cabling etc for £5,690. That price seemed OK to me £1.19 per kwh), is it?
It doesn't come with any optimisers, would this make much of a difference in our application? Is there a benefit to having 340w panels vs a lower number of higher wattage ones? We are currently with Shell Energy and their SEG rate is 3.5p per kwh, would I be able to switch to someone with a better rate now or will I be stuck with Shell until the market calms down?
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