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Joined 3 years ago
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Cake day: June 13th, 2023

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  • No no no, you got me wrong.

    You’re saving a lot more because:

    • you redirect your “whenever” power usage (car charging, other high power use like dishwasher, washing machine, dryer, etc.) to that period, thus reducing your expenses, while allowing the battery to still charge (solar generates power at night too, unless it’s pitch black, albeit considerably less than you would during the day)
    • during the peak time, you use the battery and solar and supply the system back, essentially bringing your peak usage expense to near 0.

    At the end of the day you’re balancing out your incoming and outgoing power - and with the battery you can be even completely grid-free (albeit still connected as a backup), if needed.


  • You’re forgetting that those batteries are super useful in case of power outages and to time your energy release to the grid when it’s most valuable for you. It’s also beneficial to switch to an electric plan that has on/off peak rates, so you can charge the battery during off peak, and utilise it during peak periods. kWh pricing can be as much as 2-3x difference (depending on how you look at it, e.g. Octopus offers 0.11ppkWh off-peak and 0.35ppkWh peak rates, but they have a solar package too that offers optimised export rates).

    I’d also say, go for a smaller, modular battery, and upgrade bit by bit as you need, that way the investment returns are visible sooner.