Battery Storage

gally35
gally35 Posts: 1
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I have installed battery storage and can achieve up to 80% night usage. However most suppliers have a night rate at 0.16 but provide registered eve owners at 0.05.  What is the best way to get more savings from this investment without the uneconomic cost of solar? If we swich our usage to off peak time3 we should get more of the energy producers savings.

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  • QrizB
    QrizB Posts: 13,624
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    edited 4 February at 11:09AM
    If you want an EV tariff, you can buy an EV. I'm not aware of any current EV tariffs that are as cheap as 5p/kWh, although some are as low as 7p.
    Or you could try Octopus Agile. There's a long thread on it.
    PS solar PV in many places will give a 15-20% ROI, so I don't know why you think it's uneconomic?
    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.
  • Oscarmax
    Oscarmax Posts: 102
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    gally35 said:
    I have installed battery storage and can achieve up to 80% night usage. However most suppliers have a night rate at 0.16 but provide registered eve owners at 0.05.  What is the best way to get more savings from this investment without the uneconomic cost of solar? If we swich our usage to off peak time3 we should get more of the energy producers savings.
    Financially you would have been better off fitting solar panels
    12 x 370 Watt J A panels Solis 3.6 invertor. Solax AC invertor and 5.8 triple battery
  • Scot_39
    Scot_39 Posts: 1,666
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    edited 4 February at 12:20PM
    QrizB said:
    If you want an EV tariff, you can buy an EV. I'm not aware of any current EV tariffs that are as cheap as 5p/kWh, although some are as low as 7p.
    Or you could try Octopus Agile. There's a long thread on it.
    PS solar PV in many places will give a 15-20% ROI, so I don't know why you think it's uneconomic?
    There was a press release recently saying B Gas was going to offer 4.95p/kWh - but its very specific, with Hive kit discounted by 4p from their standard ev 8.95p rate.

    https://www.centrica.com/media-centre/news/2024/british-gas-leading-the-charge-with-uks-cheapest-ev-rate/

    Maybe it's a trend for them  - they already have a latest gen tie up with Dimplex for Quantums on E7 etc. Worry is its potentially a short term marketing discount for premium kit costs.

    But it's easy to forget Centrica are also large investors in renewables these days - so have electric to sell too.
  • MWT
    MWT Posts: 9,099
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    edited 4 February at 12:13PM
    QrizB said:
    PS solar PV in many places will give a 15-20% ROI, so I don't know why you think it's uneconomic?
    The problem is that once you've already fitted a battery capable of getting you through most of the day, solar looks uneconomic as you are only saving against the lowest kWh rate you can get to charge the battery, so it at least doubles the time to break-even.
    If you start with solar then then the ROI is much better of course, and the ROI on adding a battery would look poor.
    ... or as we've done, you put in Solar PV, a large battery and buy an EV then don't ever look at the ROI again :)

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