One System to Replace FourThe Home Energy System That Thinks for ItselfFor years, a typical home solar battery system meant buying four separate products: a solar inverter, a battery, an EV charger, and an energy management gateway. Four boxes on your wall, four sets of wiring, four apps on your phone, and four points of failure. The Sigenergy SigenStor. replaces all of them with one elegant, modular stack.Available now at AIZO Quality Heating, the SigenStor is the UK's most advanced home energy storage system — designed from the ground up to integrate solar, storage, EV charging, and whole-home backup in a single, expandable unit. This guide covers everything a UK homeowner needs to know before specifying or purchasing the system."The SigenStor doesn't just store energy. It manages it — across solar, the grid, your EV, and your home — simultaneously, intelligently, and automatically."Sigenergy design philosophy
The 5-in-1 ConceptFive Systems, One Elegant StackThe SigenStor earns its "5-in-1" title because it genuinely integrates five distinct technologies into one modular unit — not by shrinking them, but by redesigning each from scratch to work together seamlessly.1Solar PV InverterConverts DC electricity from your solar panels into AC for household use. Handles 3.6–12 kW single phase or 10–25 kW three phase, with multiple MPPT inputs to optimise output even from complex or shaded roofs.2Battery Power Conversion System (PCS)Manages the charge and discharge of the LiFePO4 battery modules — the brain that decides when to store, when to use, and when to export, all in real time.3LiFePO4 Battery PackStackable 5 kWh or 9 kWh modules (5.84 kWh and 8.76 kWh usable). Up to six modules per stack, expandable to 54 kWh total. 100% depth of discharge. Rated to 10,000+ cycles.4Energy Management System (EMS)The AI brain of the system. The cloud-native mySigen app monitors production, consumption, and grid interaction in real time, and syncs with Octopus Agile and other smart tariffs to charge cheaply and discharge profitably.5Optional EV DC Charging ModuleThe unique differentiator. An integrated 12 kW or 25 kW DC charging module slots into the stack — no separate charger needed. Charge your EV directly from solar at up to 3.5× the speed of any AC wallbox.

Battery TechnologyWhy LiFePO4 Chemistry Changes EverythingNot all batteries are equal. The SigenStor uses Lithium Iron Phosphate (LFP) cells — the safest, longest-lasting chemistry available for home energy storage. Unlike older Lithium-NMC cells still found in some competitor products, LFP cells do not undergo thermal runaway — the catastrophic overheating failure mode that has caused fires in other battery types.Each SigenStor battery module contains 280 Ah large-format, low-voltage cells — a design that distributes current across more surface area, generating less heat and extending cell life dramatically. The SigenStor is warranted to retain 70% of usable capacity after 10 years and rated for more than 10,000 charge-discharge cycles.🔋LiFePO4 ChemistryNo thermal runaway risk. Safer than NMC alternatives. Same chemistry used in commercial grid storage worldwide.♻️10,000+ Cycle LifeDaily cycling for 27+ years of calendar life. Warrantied for 70% capacity retention at year 10.⚡100% Depth of DischargeUse every kilowatt-hour you store. No hidden reserve held back by the system.🌧️IP66 Weatherproof RatingSuitable for indoor or outdoor installation. Built for the UK's variable climate and rain.
Deep Dive — The Charging ModuleThe SigenStor EV DC Charging Module: A Game-Changer for EV OwnersOne of the most genuinely revolutionary features of the SigenStor — and one that no competitor has matched — is its integrated bidirectional DC charging module for electric vehicles.Why DC Charging Is DifferentEvery standard home EV charger — regardless of brand or price — is an AC charger. Your car's onboard AC-to-DC converter limits effective charge speed to around 7 kW, regardless of how powerful the wallbox claims to be.The SigenStor's optional DC charging module bypasses that converter entirely, delivering current directly to the EV battery. The 12 kW version charges at 1.7× the speed of an AC wallbox; the 25 kW version charges at up to 3.5× faster — the equivalent of adding a rapid charger to your home. For vehicles with 60–80 kWh batteries, this means a 0–80% charge in under 4 hours rather than 8–10 hours overnight.The module is available from AIZO Quality Heating in both 12 kW and 25 kW variants.
EV DC Charging Module — Key SpecificationsSigenergy EVDC — 12 kW and 25 kW Bidirectional DC ChargerPerformance12 kW variant output12 kW DC25 kW variant output25 kW DCSpeed vs AC wallboxUp to 3.5× fasterCharging directionBidirectional (V2H / V2G)ConnectorCCS2 (Combined Charging System)Compatible vehiclesCCS2-capable EVsIntegrationSolar direct chargingYes — PV-direct DCV2H operationYes — EV powers homeV2G operationYes — EV exports to gridApp controlmySigen — schedule & monitorSmart tariff integrationOctopus Agile, Flux & moreInstallationIntegrates into SigenStor stackThe bidirectional capability unlocks Vehicle-to-Home (V2H) and Vehicle-to-Grid (V2G) operation. If the grid goes down, your EV battery can act as an extended reserve for your home. On Octopus Agile, charge cheaply overnight and power your home during peak price periods.
System IntelligenceThe mySigen App — AI That Thinks AheadHardware is only half the story. What makes the SigenStor exceptional is the intelligence layer sitting above it.📊Real-Time MonitoringTrack solar generation, battery state of charge, household consumption, and grid import/export from one app. Hourly, daily, and historical views included.🧠AI Tariff OptimisationSyncs with Octopus Agile, Octopus Flux, Economy 7, and other smart tariffs via API. Charges automatically during cheapest slots and discharges during the most expensive periods.🌩️Instant Backup SwitchingWhen connected via the Sigenergy Gateway, the system switches to battery backup in 0 ms. Lights, router, fridge, and heating stay on — unnoticed by your household.🔌Virtual Power Plant ReadyVPP-ready, allowing energy suppliers to schedule charge and discharge remotely in exchange for payments — turning your battery into a revenue stream.☁️Cloud-Native ArchitectureSoftware-defined and self-evolving — the system improves via over-the-air updates. Features are added after purchase with no hardware changes needed.🔧Fast CommissioningAuto plug connectors between battery modules. 15-minute stackable installation. Designed for fast, clean installs by MCS-accredited engineers.
Whole-Home BackupThe Sigenergy Gateway — Your Power Cut ShieldThe SigenStor system reaches its full potential when paired with the Sigenergy Gateway. Think of the Gateway as the intelligent switchboard that sits between your SigenStor and your home's consumer unit.When the grid fails, the Gateway switches your property to battery power in 0 milliseconds — faster than any UPS, fast enough that your sensitive electronics never notice the transition. You can configure which circuits receive backup power, set a custom battery reserve for emergencies, and even keep your solar panels running during a power cut — something most grid-tied systems cannot do.Two Gateway variants are available at AIZO Quality Heating: the HomePro SP-F for single-phase whole-home backup, and the Gateway C60-2 Three Phase for larger three-phase properties or dual-SigenStor installations.
Watch It In ActionSee Why the SigenStor Is Unlike Any Other Home BatterySigenergy's official product video showcases the full 5-in-1 SigenStor ecosystem — the modular stack design, the app interface, and the EV DC charging integration.▶ Official Sigenergy product videos, installation guides & EV DC charging demos · View all videos on YouTube →
Honest ComparisonSigenStor vs the CompetitionHow does the SigenStor compare to the Tesla Powerwall 3 and GivEnergy All-in-One — the UK's most popular battery systems?Criterion✦ SigenStorTesla Powerwall 3GivEnergy All-in-OneBattery ChemistryLiFePO4 (LFP)LFPLFPBase Capacity5.9 kWh / 9 kWh per module13.5 kWh8.2 kWh / 13.5 kWhScalable?✔ Yes — to 54 kWh✔ Yes — up to 4 units✔ YesIntegrated Solar Inverter✔ 3.6–12 kW single / 10–25 kW 3-phase✔ 5 kW✔ Various kW optionsDC EV Charging✔ 12 kW / 25 kW built-in✗ No✗ NoV2H / V2G✔ Yes (with DC module)✗ No✗ NoBackup Switchover✔ 0 ms (with Gateway)~20 ms~20 msOctopus Agile✔ Native via mySigen app✔ Via Powerwall app✔ Via GivEnergy appInstaller EcosystemUK-wide via AIZO & trained partnersTesla-approved onlyGivEnergy-approved onlyWarranty10 years10 years10 years← Swipe to see full comparison →
Shop the RangeSigenergy Products In Stock at AIZO Quality HeatingOur full Sigenergy range is available online with fast UK delivery. View all 25+ Sigenergy products →Complete SystemSigenStor EC 6.0 kW + 9.0 kWh LFP BatterySingle phase hybrid inverter with 9 kWh LFP storage — the perfect starting point for most UK homes.From £3,299 inc. VAT — View Product →Energy ControllerSigenStor Energy Controller — Single Phase 3.6–12 kWThe hybrid solar inverter at the heart of the SigenStor. All variants from 3.6 kW to 12 kW single phase.From £1,199 inc. VAT — View Product →Battery ModuleSigenStor Battery Module — 5.9 kWh LiFePO4Stackable LFP battery modules with LED indicator. 5.84 kWh usable, IP66 rated. Add modules any time to expand capacity.From £1,249 inc. VAT — View Product →EV DC ChargingSigenStor EV DC Charging Module — 12 kW / 25 kW V2G12 kW or 25 kW integrated DC charger with CCS2 connector. Bidirectional V2G/V2H. Up to 3.5× faster than any AC wallbox.From £1,599 inc. VAT — View Product →Backup GatewaySigenergy HomePro SP-F Gateway — 100A Single Phase0 ms backup switchover for complete whole-home protection. Keeps solar running during power cuts.From £899 inc. VAT — View Product →Complete SystemSigenStor EC 3.6 kW + 2× 6.0 kWh LFP Batteries (12.04 kWh)Larger starting capacity: 3.6 kW single phase inverter bundled with two battery modules for 12 kWh total storage.From £4,499 inc. VAT — View Product →View All 25+ Sigenergy Products
Perfect Pairings — Solar PanelsWhich Solar Panels Work Best with the SigenStor?High-Efficiency Monocrystalline Panels RecommendedThe SigenStor's energy controller supports PV oversizing of up to 200% of the inverter rating — meaning a 6 kW inverter can accept up to 12 kW of panel capacity. This maximises low-light morning and afternoon generation and ensures the battery fills faster on partially cloudy UK days.We recommend monocrystalline panels of 400 W or higher, particularly N-type TOPCon and HJT cells that perform better in diffuse UK light conditions. Brands in stock at AIZO: Astronergy, JA Solar, Jinko Solar, Canadian Solar, LONGi, and Aiko — all Tier 1 manufacturers with 25–30 year performance warranties.Browse Solar PanelsSolar FAQs
Perfect Pairings — Heat PumpsSigenStor + Air Source Heat Pump: The Dream CombinationPairing a SigenStor with an air source heat pump is one of the most powerful moves a UK homeowner can make to slash energy bills and reach near-zero carbon heating.💷Slash Running Costs with Tariff ArbitrageCharge the SigenStor at Octopus Agile rates as low as 7p/kWh overnight, then power your heat pump from battery during 35p/kWh peak periods. Savings of £400–800 per year on heat pump running costs alone.🔥Uninterrupted Heating in Power CutsWith the Sigenergy Gateway providing 0 ms backup, your heat pump continues running during outages. The SigenStor handles heat pump startup current seamlessly — something most battery systems cannot do.🌱Near-Zero Carbon HeatingSolar panels charge the SigenStor, the SigenStor powers the heat pump — your heating runs on renewable energy you generated yourself.🏠Boiler Upgrade Scheme EligibleAir source heat pumps in England qualify for the £7,500 Boiler Upgrade Scheme grant. Combining with a SigenStor reduces the total investment and improves payback period significantly.Heat pump brands in stock at AIZO: Samsung, Daikin, Mitsubishi Electric, Riello, Haier, Midea, and Baxi — all compatible with the SigenStor system.Browse Air Source Heat Pumps
Is the SigenStor Right for You?The SigenStor Makes Particular Sense If…The SigenStor is a premium system for homeowners and property managers who want maximum performance and future-proofing from their energy investment.🚗You Drive or Plan to Drive an EVNo other home battery offers built-in DC fast charging. If you own a CCS2-capable EV, the SigenStor's integrated charger is a compelling reason to choose this system over any alternative.☀️You Have Solar Panels (or Plan to)The SigenStor is specifically designed to maximise solar self-consumption. Its multi-MPPT inverter, PV oversizing capability, and AI scheduling deliver exceptional ROI for solar households.💸You're on a Smart TariffOctopus Agile, Octopus Flux, Economy 7, and similar tariffs are made for systems like this. The mySigen AI will arbitrage rate differentials automatically, accelerating your return on investment.🏠Power Cut Protection Matters to YouRemote properties, homes with medical equipment, or households that have experienced outages — the 0ms Gateway backup makes this the most robust home resilience solution available.📈You're Building for the FutureStart with 9 kWh and add modules later. Plan to add an EV. The modular SigenStor grows with your needs — no expensive system replacements required.🏗️You're Building or RetrofittingNew builds, self-builds, and renovation projects benefit enormously from specifying the SigenStor from the outset. Our trade team can support architects and developers with technical specifications.
Learn MoreBuilding Your Complete Home Energy SystemThe SigenStor is one piece — albeit a transformative one — in a broader home energy strategy. Explore these related topics and products to understand how everything fits together.All Solar BatteriesBrowse our full range of home battery storage systems — Pylontech, Tesla, GivEnergy, Duracell Energy, and SigenStor.Solar PanelsTier 1 monocrystalline panels from leading manufacturers. All compatible with the SigenStor's energy controller.Air Source Heat PumpsThe ideal partner for the SigenStor. Run your heat pump on stored solar or off-peak electricity — and keep it running in a power cut.Sunamp Heat BatteryAnother revolutionary approach to energy storage — this time for hot water. Phase-change thermal storage as a perfect complement to a SigenStor installation.Solar Energy FAQsYour questions answered — SEG tariffs, battery sizing, VAT exemptions, Boiler Upgrade Scheme, and off-grid operation.Request a Custom QuoteTell us about your property and goals — our technical team will specify the right SigenStor configuration for you.
Ready to Stop Paying Peak-Rate Bills?The SigenStor Is In Stock at AIZO — Ready to ShipOur technical team is here to help you specify the right system, answer installation questions, and support your installer every step of the way.Shop All Sigenergy ProductsRequest a Custom Quote£3,299Complete System FromView Product£1,199Energy Controller FromView Product£1,249Battery Module FromView ProductAIZO Quality Heating · [e