Renewables: "talking 'bout my generation"

70sbudgie · 12 August 2022 at 12:05AM

19.1kWhrs, 4.4 O's. This ridiculous heat seems to be keeping me from Hawaii!

Magnitio · 12 August 2022 at 8:00AM

5.93 O's yesterday. Average for the past 7 days is 5.9. Already generated 50% of PVGIS for August after just 11 days. Maybe great weather for solar, but desperately need some rain.

Waywardmike · 12 August 2022 at 9:52AM

24.72 kWh yesterday. 6.18 O's. the heat is seriously affecting my peak output, I miss May!

Image: https://us-noi.v-cdn.net/6031891/uploads/editor/bj/9o93m95nglwn.png

Martyn1981 · 12 August 2022 at 10:54AM

Alnat1 said:

@EcoScruples I'm finding that the hotter it gets, the more I go over that 3.68kw. Under 25C it always caps at 3.669/3.670. 19-20 July and in this recent hot spell I get capping as high as 3.739.

Somebody will let me know if my simple reasoning is correct. Grid is usually 240-ish and I've noticed it goes higher on these days, maybe 248-250. Could this be because 6 out of the 14 houses on our street have solar? Does this higher voltage help slurp a bit extra out of the inverter?

29.7kWh 5.66 O's

Hiya, you may have a point. I think the earlier legislation required capping at 16A, which is 3.68kW at 230V. However, with UK voltage typically being higher than our claimed 230V, it would/could mean higher export, so the rule became 3,680W.

So yes, it's possible that higher local voltage could well mean higher capping for you, if you have enough generation headroom, and the inverter is set to cap at 16A not 3.68kW. Obviously a lot of if's, but maybe?

Nearly forgot why I came on here - good gen, but too much heat (for me), now projecting 116% for August.