Independent UK battery assessment

    Battery Storage ROI Calculator UK

    Find out whether a home battery is financially worthwhile for your household — with a realistic payback period, lifetime savings and a suitability score. Uses your own tariff, usage and solar figures. No sales pitch.

    Figures reviewed June 2026 and updated monthly where appropriate. All results are estimates.

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    Your home

    Helps us tune solar yield and default usage.

    Solar Panels and Home Batteries: The Honest Buyer's Guide

    Our free PDF guide for UK households: how batteries and solar actually work, usable vs headline capacity, what installations cost, how to compare itemised quotations, warranty terms to check and how Smart Export Guarantee payments work.

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    See all your savings in one place

    Enter your home details once and get personalised savings, supplier picks, recommended actions, calculators and guides on My PowerGuardian.

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    Frequently Asked Questions

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    Solar panels and battery storage

    This page is part of our UK solar panels and home battery guide, which separates bill savings, export income and total financial return.

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    Free calculators picked for this topic.

    UK Solar Savings Calculator

    Estimate your yearly solar savings from system size, self-use and export rate.

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    Home Energy Efficiency Score

    Score your home's efficiency and see which improvements cut the most off your bills.

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    Energy Bill Calculator

    Enter your kWh usage, unit rate and standing charge for daily, monthly and annual totals.

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    Compare Energy Suppliers

    Independent PowerGuardian scores for relevant suppliers.

    Octopus Energy

    91/100

    Octopus continues to lead the UK market on customer service and complaint handling, backed by genuinely competitive smart tariffs and strong financial backing. The clear front-runner on our intelligence dashboard.

    Compare Supplier

    So Energy

    79/100

    Backed by ESB, So Energy combines competitive fixed tariffs with consistently strong service scores. A solid mid-market performer.

    Compare Supplier

    EDF Energy

    74/100

    EDF is a steady, financially robust supplier with mid-table service and fair fixed-tariff renewals. Few surprises in either direction.

    Compare Supplier

    Frequently Asked Questions

    Quick answers to the questions people ask most about this topic.

    Free Expert Report

    Solar Savings Report

    Real-world payback figures for UK home solar in 2026, including export rates, battery storage and break-even timelines.

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