Battery Payback Calculator

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AGT
Posts: 985
Joined: Sat Jan 29, 2022 11:26 am

Battery Payback Calculator

#1

Post by AGT »

Anyone know of a PV/ Battery calculator that you can plug in current annual usage, and get an idea for cost comparison, thankfully not for me, for my office colleague that I share an office with, like to do everything via spreadsheet!!

Cheers for any pointers!!
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nowty
Posts: 5786
Joined: Mon May 31, 2021 2:36 pm
Location: South Coast

Re: Battery Payback Calculator

#2

Post by nowty »

A general rule of thumb is twice the kWh's of battery verses the kWp of installed PV.

And install as much PV that will fit irrespective of usage, as usage will change in the future in the electrification of things.
Last edited by nowty on Fri Aug 30, 2024 6:12 pm, edited 1 time in total.
18.7kW PV > 109MWh generated
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105kWh EV storage
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AGT
Posts: 985
Joined: Sat Jan 29, 2022 11:26 am

Re: Battery Payback Calculator

#3

Post by AGT »

Cheers. He has a ground floor flat, but a 120 foot garden so maybe some ground mount.
He’s just been speaking to financial advisor and he’s got 5 years left at work so planning expenditure while he’s earning
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