--- title: "Solar Panels with Battery Storage: The Modern Standard | South East Solar Network" description: "Why over 70% of South East solar installs now include a battery." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "name": "South East Solar Network", "url": "https://southeastsolarnetwork.co.uk", "areaServed": "South East England", "telephone": "+443335671183", "logo": "https://southeastsolarnetwork.co.uk/favicon.ico", "image": "https://storage.googleapis.com/gpt-engineer-file-uploads/attachments/og-images/1696c2df-452b-4380-b418-fd3f1c9a128a" }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://southeastsolarnetwork.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Guides", "item": "https://southeastsolarnetwork.co.uk/guides" } ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Who writes these solar guides?", "acceptedAnswer": { "@type": "Answer", "text": "Every guide is written or reviewed by a member of our in-house team with hands-on install experience, and re-checked quarterly against the latest MCS, Ofgem and DESNZ figures. We link primary sources (PVGIS, MCS database, Ofgem SEG tariff table, HMRC capital-allowance guidance) directly so you can verify claims yourself." } }, { "@type": "Question", "name": "Are the price and payback figures up to date for 2026?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Cost figures are re-benchmarked every quarter against real quotes issued across our vetted South East installer network. Payback figures assume 30p/kWh import, 15p/kWh SEG export and conservative 950 kWh/kWp/year South East yield — matching the assumptions our calculators use." } }, { "@type": "Question", "name": "Do you accept sponsored content or paid product placements?", "acceptedAnswer": { "@type": "Answer", "text": "No. We do not accept sponsored content, paid rankings or manufacturer affiliate commissions. Brand recommendations reflect real-world install and warranty-claim experience across our partner base — not commercial arrangements." } }, { "@type": "Question", "name": "Which guide should I read first?", "acceptedAnswer": { "@type": "Answer", "text": "Start with 'Are solar panels worth it in the UK?' for the honest economic case, then 'Solar panel costs UK' to sanity-check any quote you receive. If you're weighing a battery, read the battery costs guide next; if you have an EV, jump to the EV charging and solar guide." } }, { "@type": "Question", "name": "Do the guides cover batteries and EVs, not just panels?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — we treat batteries, hybrid inverters, EV chargers and time-of-use tariffs as first-class topics. Solar-only makes less financial sense every year as time-of-use tariffs mature, and our guides reflect that." } }, { "@type": "Question", "name": "Can I ask a question the guides don't cover?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Call 01903 000 000 or use the contact form and a specialist will answer directly — we frequently turn new questions into new guide sections, so you're helping the next reader too." } } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "Solar Panels with Battery Storage: The Modern Standard", "description": "Why over 70% of South East solar installs now include a battery.", "mainEntityOfPage": "https://southeastsolarnetwork.co.uk/guides/solar-panels-with-battery-storage", "image": [ "https://southeastsolarnetwork.co.uk/og-guides.jpg" ], "datePublished": "2025-01-15", "dateModified": "2026-08-21", "author": { "@type": "Organization", "name": "South East Solar Network", "url": "https://southeastsolarnetwork.co.uk" }, "publisher": { "@type": "Organization", "name": "South East Solar Network", "logo": { "@type": "ImageObject", "url": "https://southeastsolarnetwork.co.uk/favicon.ico" } } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "/" }, { "@type": "ListItem", "position": 2, "name": "Guides", "item": "/guides" }, { "@type": "ListItem", "position": 3, "name": "Solar Panels with Battery Storage: The Modern Standard", "item": "/guides/solar-panels-with-battery-storage" } ] } ] --- MCS-accredited · Vetted local installers · Free no-obligation quotes [0333 567 1183](tel:+443335671183) [South East Solar Network ](/) [Services](/services)[Areas](/areas)[Guides](/guides)[Calculators](/calculators)[About](/about)[Contact](/contact) / [0333 567 1183](tel:+443335671183)[Free Quote](/contact) 1. [Home](/)/ 2. [Guides](/guides)/ 3. Solar Panels with Battery Storage: The Modern Standard # Solar Panels with Battery Storage: The Modern Standard Why over 70% of South East solar installs now include a battery. MCS Certified Installers RECC Consumer Code 0% VAT on Solar Up to 25-Year Warranty Finance From 0% APR Rated 4.9 / 5 on Reviews Jump to a section in this guide ## The economics shifted When export rates were 5p/kWh and import was 14p/kWh, batteries struggled to make economic sense. Now that export rates are 8-15p/kWh and import is 28-32p/kWh, the gap between selling exported solar and avoiding imported electricity is wide enough that batteries pay back in 8-10 years on most homes. ## Smart tariff stacking Octopus Flux, Intelligent Go and similar tariffs let you charge the battery from cheap overnight grid power and export at peak rates — a further £100-£300 annual saving on top of solar. ## How much capacity? The rule of thumb is to size battery capacity to roughly your average evening + overnight consumption. For a typical South East home that's 5-10 kWh; for EV-charging households 10-15 kWh; for heat-pump households 15-20 kWh. Oversizing wastes money — undersizing forces you to import at peak rates from 4pm onwards. Modular brands (Fox ESS, Pylontech, Sigenergy) let you start moderate and scale up later without replacing what you've got. Fixed-capacity brands (Tesla Powerwall 3, GivEnergy AIO) require committing to your size at install time. ## Retrofit to existing solar If you already have solar (often from a Feed-in Tariff install 2012-2019), adding a battery is straightforward via an AC-coupled retrofit. Installation typically takes one day, doesn't disturb the existing solar inverter, and most importantly preserves your FiT payments — which are based on generation, not export. Typical retrofit cost for a 10 kWh battery is £5,500-£8,500 fitted, and most older-FiT homes see annual savings of £600-£1,000 from the battery alone because their existing solar has been heavily exporting at near-zero value. ## Backup during power cuts Most modern batteries include Emergency Power Supply (EPS) — automatic switchover to battery power for a set of essential circuits (typically fridge, lights, broadband, a couple of sockets) during a grid outage. Whole-home backup is a paid upgrade requiring additional switching hardware (£600-£1,500) and is most valuable in rural Kent, Sussex, Hampshire and the Isle of Wight where outages are more frequent. ## Solar-only vs solar + battery decision tree Choose solar-only if: you're at home most daylight hours, your bills are under £1,200/year, and you don't have an EV or heat pump on the horizon. Payback 8-11 years. Choose solar + battery if: you work away from home, your bills are over £1,500/year, you have or plan an EV, or you want backup during outages. Payback 8-12 years with materially higher lifetime savings. MCS-accredited Vetted installers RECC · TrustMark ## Get a free quote based on your guide Share a few details and a trusted MCS-accredited installer in your area will be in touch shortly. Full namePhoneEmail (optional)Postcode Notes (optional) Your privacy matters: We will only pass your details to **1 vetted solar firm** who we feel is the best match for your needs — never multiple companies. Get my free quote By submitting this form you agree to our [Terms of Use](/terms) and [Privacy Policy](/privacy). Take the next step ## Services covered in this guide [ Solar Panel Installation MCS-certified solar PV installs across the South East. ](/services/solar-panel-installation)[ Solar Battery Storage Tesla, GivEnergy, Fox ESS and more — fully fitted, fully certified. ](/services/solar-battery-storage)[ Solar Panel Maintenance Annual health checks that protect your investment. ](/services/solar-panel-maintenance)[ Solar Panel Repairs Fast diagnosis and repair, any brand. ](/services/solar-panel-repairs) Find a local installer ## Areas we cover in the South East [ Solar installers in Kent Maidstone · Canterbury · Ashford ](/solar-installers-kent)[ Solar installers in Surrey Guildford · Woking · Cobham ](/solar-installers-surrey)[ Solar installers in Hampshire Southampton · Portsmouth · Winchester ](/solar-installers-hampshire)[ Solar installers in West Sussex Worthing · Crawley · Horsham ](/solar-installers-west-sussex)[ Solar installers in East Sussex Brighton · Hove · Eastbourne ](/solar-installers-east-sussex)[ Solar installers in Berkshire Reading · Bracknell · Slough ](/solar-installers-berkshire) Explore the topic ## Keep exploring — calculators, services and local installers Descriptive links across our calculators, guides, services and local installer areas — pick the next step that fits where you are. Calculate Run the numbers - [Solar savings & payback calculator Model annual bill savings and payback years ](/calculators) - [What size solar system do I need? Right-size your array to your usage ](/calculators) - [Battery storage ROI calculator See the extra savings a battery unlocks ](/calculators) - [EV home charging cost calculator Compare charging on solar vs the grid ](/calculators) Services covered Get this fitted - [Solar Panel Installation MCS-certified solar PV installs across the South East. ](/services/solar-panel-installation) - [Solar Battery Storage Tesla, GivEnergy, Fox ESS and more — fully fitted, fully certified. ](/services/solar-battery-storage) - [Solar Panel Maintenance Annual health checks that protect your investment. ](/services/solar-panel-maintenance) - [Solar Panel Repairs Fast diagnosis and repair, any brand. ](/services/solar-panel-repairs) Keep reading More UK solar guides - [Are Solar Panels Worth It in the UK in 2026? An honest, numbers-led look at solar economics, payback periods and RO ](/guides/are-solar-panels-worth-it-uk) - [Solar Panel Costs UK 2026: Real Prices, No Sales Spin What you should actually expect to pay for a residential solar system ](/guides/solar-panel-costs-uk) - [Solar Battery Costs UK 2026: Brands, Capacities, Payback What batteries cost in 2026, which brands lead, and how to size storag ](/guides/solar-battery-costs-uk) - [Solar Payback Period UK: 7-10 Years on Most Homes How to model solar payback honestly — and what drives it up or down. ](/guides/solar-payback-period-uk) Find installers Local installers we vet - [Solar installers in Kent Maidstone · Canterbury · Ashford ](/solar-installers-kent) - [Solar installers in Surrey Guildford · Woking · Cobham ](/solar-installers-surrey) - [Solar installers in Hampshire Southampton · Portsmouth · Winchester ](/solar-installers-hampshire) - [Solar installers in West Sussex Worthing · Crawley · Horsham ](/solar-installers-west-sussex) ### More guides [ Are Solar Panels Worth It in the UK in 2026? Read ](/guides/are-solar-panels-worth-it-uk)[ Solar Panel Costs UK 2026: Real Prices, No Sales Spin Read ](/guides/solar-panel-costs-uk)[ Solar Battery Costs UK 2026: Brands, Capacities, Payback Read ](/guides/solar-battery-costs-uk) [All guides](/guides) South East Solar Network MCS-accredited residential solar installers across the South East of England. Vetted, insured, RECC-protected. 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