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I have just ordered a Growatt AC Charger & Growatt 6.5kw Battery for my 4Kw (16 panels) PV system that I have had for 8.5 years It has generated 31.95 MWh to date.
My system has a small inverter under each panel so it outputs 230V AC so all the panels are connected in parallel (enphase) If you use a system with just one inverter they have to be wired in series and bring 450V DC ish down to the inverter..
I also don't let any power to go back to the grid as it diverts surplus energy to the immersion heater (boiler set to 30c and the panels bring up to 70c most days.
This is achieved with a box I built for the job .
The company I am using to install the battery and Charger is ([email protected])
..Clive
The more you know, The better you know, How little you know
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06-09-2022 #2
Brilliant thanks Clive.
I’ve been running spreadsheets on our East West roof and was looking at:
Panels on West only ( East or East and West combinations were not so good)
4 or 6 kWp panels (in series as no shade on roof and cheaper)
6 kWh battery
Single inverter
Eddi water heater diverter
Zappi car charger (existing)
Octopus Agile tariff as this allows buy/sell every 30 mins
Undecided on AC (grid side) or DC ( panel side) for battery but leaning towards panel side as less conversions AC to DC and I think I have more control over the battery(?). Plus many more confusing questions and options!
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My Battery & Charger is being fitted on the 12th Sept
The installation also includes solar panels clean.
Service every year for 10 years.
Guarantee on Bat. and charger 15 years.
Full monitoring with App.
We get paid for what we generate. I think that has been stopped now for new systems.
My panels are only 240w I think they have improved them to give out about 320 ish W
Also you could only have 4Kw on a domestic install at the time, this has now been changed. If I add more I lose the payment FIT.
The system has more than paid for itself by a long way.
Good luck with the install...Clive
The more you know, The better you know, How little you know
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The Following User Says Thank You to Clive S For This Useful Post:
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