Sigenergy SigenStor Battery Storage — Installed by Omni3
The most integrated home energy system we install. Solar, battery storage, EV DC charging and intelligent energy management — all in one platform. Installed by NICEIC approved Omni3 across West Sussex and the South East.
A genuine all-in-one energy system
The Sigenergy SigenStor is not a battery with a separate inverter and a separate EV charger wired together — it is a single, purpose-designed system that integrates all five components into one cohesive platform. Solar inverter, EV DC charger, battery power conversion system, battery pack and energy management controller work together as a unified whole.
This level of integration means less wiring, fewer potential failure points and more intelligent energy management. The system can simultaneously manage solar generation, battery charging and EV charging — routing energy to wherever it delivers the best return based on real-time tariff data, weather forecasts and your usage patterns.
For homeowners planning a comprehensive energy upgrade — solar, battery and EV charging together — Sigenergy offers a higher level of coordination than separate products from different manufacturers ever can.
What SigenStor delivers
Five components, one platform — designed to work together from the ground up rather than retrofitted to be compatible.
5-in-1 Integrated Platform
SigenStor combines solar inverter, EV DC charger, battery power conversion system, battery pack and energy management controller into one cohesive unit — eliminating compatibility issues between separate components.
Built-in DC EV Charging
The SigenStor includes an integrated DC EV charger — meaning your vehicle charges directly from the battery or solar panels at higher efficiency than AC charging via a separate unit.
Intelligent Energy Management
The Sigenergy HEMS continuously optimises energy flow across solar generation, battery storage, EV charging and home consumption — automatically shifting loads to the cheapest available energy source.
Advanced Battery Architecture
LFP cell chemistry with active balancing and sophisticated BMS ensures consistent performance across the battery's rated lifecycle. Designed for daily cycling.
Grid-Interactive Operation
Supports time-of-use tariff optimisation, peak shaving, demand response and export limitation — giving commercial and residential users maximum control over grid interaction.
Future-Ready Design
Sigenergy's open platform approach means the system is designed to integrate with future technologies — including V2G (vehicle-to-grid) capability as it becomes more widely available in the UK.
NICEIC Approved • Free Survey • 0% VAT
Interested in the Sigenergy SigenStor?
We will assess your property and design the right system for your needs.
Who Sigenergy SigenStor is best suited to
New build or whole-system upgrades
SigenStor delivers the most value when installed as part of a full energy system — solar, battery and EV charger together. For new builds or whole-home renovations, it is the most cohesive option available.
EV owners combining solar and charging
The integrated DC EV charger means your vehicle charges more efficiently from solar or battery than an AC charger allows. For homes where EV charging is a major energy load, this integration delivers meaningful savings.
Premium buyers wanting future-ready technology
Sigenergy's open platform is designed to support emerging standards, including V2G capability as it rolls out in the UK. For buyers who want a system that will still be relevant in ten years, SigenStor is the strongest option we install.
Commercial and high-consumption properties
With support for peak shaving, demand response and export limitation, SigenStor has commercial-grade energy management features that benefit high-consumption sites as much as residential.
Sigenergy SigenStor & 0% VAT
Battery storage systems installed at residential properties — including the Sigenergy SigenStor — currently qualify for 0% VAT. The 0% rate applies to the battery components and, where installed as part of the same system, the solar inverter elements.
All Omni3 proposals reflect the correct VAT treatment. We will confirm the applicable rate for your specific configuration as part of your free quote.
Solar & Battery VAT Guide — Full Eligibility RulesSigenergy SigenStor — common questions
What makes Sigenergy different from other battery storage systems?
Sigenergy SigenStor is a genuine all-in-one energy system — not a collection of components from different manufacturers bolted together. It integrates a solar inverter, EV DC charger, battery power conversion system, battery pack and energy management platform into one cohesive unit. For properties wanting a high-end, future-ready energy setup, it eliminates the compatibility issues and additional wiring that come with separate components.
Is Sigenergy suitable for my home?
Sigenergy is best suited to properties where the owner wants a premium, integrated energy system — particularly those planning to install solar panels, a battery and an EV charger together. It delivers the most value when all three elements are in play. We assess every property on its own merits and will tell you honestly whether Sigenergy is the right fit or whether a simpler system would serve you better.
Can Sigenergy SigenStor be added to an existing solar installation?
Yes, though the integration approach depends on your existing inverter and system design. In some cases, the SigenStor replaces the existing inverter; in others, an AC-coupled approach is used. We assess this during a free site survey.
Does Sigenergy battery storage qualify for 0% VAT?
Yes. Residential battery storage installations — including Sigenergy SigenStor — currently qualify for 0% VAT whether installed alongside solar or as a standalone unit. All Omni3 proposals reflect the correct 0% rate.
How long does installation take?
A full SigenStor installation, including solar inverter, battery and EV charger integration, typically takes two to three days. We handle all electrical work, commissioning, app setup and customer walkthrough as part of the installation.
Get a free Sigenergy SigenStor quote
Tell us about your property and energy goals. We will review your details and arrange a free site survey to assess whether Sigenergy is the right system for your needs.
Or call us directly:
01798 263333