EV equivalent tariff for home batteries

Does anyone know of an EV equivalent tariff that could be used for charging up home batteries. It seems illogical that, if it is economic to have a tariff for electric vehicles, why they don't have one for home batteries that could change up using the same timings to use the same excess night time power.

Thanks

David

Comments

  • QrizB
    QrizB Posts: 13,654
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    Economy 7? With recent price changes there are lower off-peak prices available on E7 from eg. EDF than on the previous favourite Octopus Go / Go Faster.
    N. Hampshire, he/him. Octopus Go elec & Tracker gas / Shell BB / Lyca mobi. Ripple Kirk Hill member.
    2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 3.6kw inverter. 30MWh generated, long-term average 2.6 Os.
    Ofgem cap table, Ofgem cap explainer. Economy 7 cap explainer. Gas vs E7 vs peak elec heating costs.
  • Octopus intelligent is the best ev tariff to charge your battery but you must have an ev. If you use 10kwh per day you can save £1000 per year just by having a home battery without solar
  • QrizB
    QrizB Posts: 13,654
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    Forumite
    BTT43 said:
    Octopus intelligent is the best ev tariff to charge your battery but you must have an ev. If you use 10kwh per day you can save £1000 per year just by having a home battery without solar
    I don't think the maths stack up.
    To save £1000 a year on 10kWh a day you'd need to save almost 28p/kWh. Given that Flexible Octopus is currently capped at 34p/kWh and Intelligent is 10p/kWh, plus you'll lose perhaps 10% each way with conversion to/from the battery, savings are more like 22p/kWh which is £800 a year.
    And a 10kWh battery plus inverter is at least £6k, so it'll take seven+ years to pay for the battery before you make any actual savings.
    N. Hampshire, he/him. Octopus Go elec & Tracker gas / Shell BB / Lyca mobi. Ripple Kirk Hill member.
    2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 3.6kw inverter. 30MWh generated, long-term average 2.6 Os.
    Ofgem cap table, Ofgem cap explainer. Economy 7 cap explainer. Gas vs E7 vs peak elec heating costs.
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