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Now the sun has gone down I have the final figure from my W-facing system: 580 kWh, 115% of the prediction and almost 128 kWh per kWp. What a month!
In fact this year has averaged 109.5% of the predicted amounts compared with 90.4% for all 2024. This year the lowest month (Feb) was 99%, last year the highest (June) was 99%...

Last May was my highest ever monthly generation at 1637 kWh, then it was broken in June last year at 2059 kWh.

(nowtyrecord)
This month is now a new monthly generation PB at 2339 kWh.

My energy bill from Octopus this month is a negative bill of over £290 with over 2700 kWh exported, only issue is they have billed me for my import but not yet paid me for export.

Work array generated 1.54MWh in May, a record, which follows record generation in April, March and Feb. Ok I know this is only year 3 of the system, but still!

nowty wrote: ↑Sat May 31, 2025 9:15 pm Last May was my highest ever monthly generation at 1637 kWh, then it was broken in June last year at 2059 kWh.

(nowtyrecord)
This month is now a new monthly generation PB at 2339 kWh.

My energy bill from Octopus this month is a negative bill of over £290 with over 2700 kWh exported, only issue is they have billed me for my import but not yet paid me for export.

Flippin eck. So you're exporting about 90kWh per day. You must be 'greening' the whole neighbourhood.

Do the neighbours realise they're living next door to a massive power station?!

We exported 1.867MWh and after running the house & EV added £159 to the VB for winter.

Sunsynk system 853Kwh - all time record month
Hoymiles mancave system 131kWh

Almost in touching distance of the magic 1MWh - would have got there too, if it wasn't for those pesky meddling voltage drop outs with the hoymiles system

FIT system = 605.6
Synsynk system = 53.7

Synsynk shuts down automatically when my batteries are full, hence low outputs in good weather. I really really need to sort out an export contract given i have 4.0kw export ability.

How is your system setup with regards to charging the batteries? Are you charging them overnight, or dumping to the grid so they're empty ready for the morning sun? Seems like you're clipping huge amounts of potential solar energy.

resybaby wrote: ↑Mon Jun 02, 2025 9:34 am FIT system = 605.6
Synsynk system = 53.7

Synsynk shuts down automatically when my batteries are full, hence low outputs in good weather. I really really need to sort out an export contract given i have 4.0kw export ability.

If you can generate more than you use then an export contract is a no-brainer. I paid £25 for the standing charge and a little bit of import in May (no BEV), but got almost £102 for my export - I never dreamt that it would or could be this good.
In the longer term I should be transferring our loads from gas to electric, but for now it's amazing. Our average use has averaged 5 kWh a day (dwindling gently) for years but the pv generates more than that from March to September.
My "problem" is that the solar thermal tubes heat the water so well that there isn't much point putting pv into the DHW apart from early spring, when the tubes don't do much and flux electricity is (currently) 17p/kWh - but gas is still only 5.67!