Need Help New Solar 8kw Install

9 Posts

Looking for help, if you guys have the time to help
I was looking to get installed a 8kw solar system installed at my home, but i was told if i go over a 3.68kw inverter i need G99 application
Which is hard to get ? as your not allowed to send more than 3.68kw down the grid without this
What would be my best option
1, Go off grid and send nothing down the grid, if i'm still allowed to install the 8kw system ?
Not sure if you still need something still for me to install this size
2, Go smaller and install battery's ?
I use are 7000k a year in power
Thanks
I was looking to get installed a 8kw solar system installed at my home, but i was told if i go over a 3.68kw inverter i need G99 application
Which is hard to get ? as your not allowed to send more than 3.68kw down the grid without this
What would be my best option
1, Go off grid and send nothing down the grid, if i'm still allowed to install the 8kw system ?
Not sure if you still need something still for me to install this size
2, Go smaller and install battery's ?
I use are 7000k a year in power
Thanks
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Replies
Do you really mean you want to not have an electricity supply from the National Grid at your property at all? If not, that's not going to work.
By the way, your annual electricity usage is measured in kWh (kilowatt hours).
https://www.argandsolutions.com/g100-export-limitation
Solar iBoost+ to two immersion heaters on 350L thermal store.
100% composted food waste
Mini orchard planted and vegetable allotment created.
I was a 7mwh consumer before solar, I've added an ev as well so probably more like an 8.5mwh consumer now, but with solar and batteries I'm only buying around 2000kwh at full price and probably another 2000kwh at 5p over the winter.
Batteries will help with self consumption, as would a solar diverter to heat up your hot water tank if you have one, but.... if you are looking for a 10 year return on investment, you will likely struggle to do that with batteries as they are so expensive to buy in the quantity (kwh) that you would need to cover the house.
4kw sse since 2014 and 6.6kw wsw / ene split since 2019
24kwh leaf, 75Kwh Tesla and Lux 3600 with 20Kwh useable storage
I found this blog helpful:
https://blog.spiritenergy.co.uk/homeowner/dno-permission