Sigenergy SigenStor
The SigenStor is Sigenergy's AI-optimised 5-in-1 — a solar inverter, battery, optional EV DC charger and energy-management system in one stackable tower. Ecoaim designs and installs it across Scotland's Central Belt from our Livingston (EH54) base, supplied direct by SigEnergy's UK Platinum Distributor.
The Sigenergy SigenStor collapses five units — solar inverter, battery power-conversion, battery pack, optional EV DC charger and AI energy management — into one stackable tower. Battery stacks to roughly 48 kWh, runs at 93–95% round-trip efficiency, and provides 0 ms / sub-millisecond EPS backup through a power cut. Ecoaim is an MCS-certified, Sigenergy-certified installer in Livingston, EH54, and is among the first in Scotland to specify the SigenStor.
What the SigenStor 5-in-1 actually is
Most home-energy upgrades bolt a battery and an EV charger onto an existing solar inverter, leaving a wall of separate boxes that were never engineered to work together. The SigenStor takes the opposite approach: it integrates five functions into a single stackable tower, so there is less wall equipment, a cleaner install and one coordinated system rather than three products from three manufacturers talking to each other over the cloud.
Ecoaim came to Sigenergy after years installing the EcoFlow ecosystem — the SigenStor is the natural upgrade for Scottish homeowners who want whole-home electrification (solar, battery, heat pump and EV) on one platform, with the AI energy management to make it actually save money on a time-of-use tariff. We design and specify each SigenStor from our Livingston base, supplied direct by sigenergy uk platinum distributor.
The five units in one tower
A single solar inverter manages your array — single-phase up to 6 kW or three-phase up to ~25 kW, software-configurable to the site.
The power-conversion system that charges and discharges the battery, engineered as one unit with the inverter rather than bolted on.
Stackable LFP modules (5.2 / 8.0 kWh) up to roughly 48 kWh per stack — start sensibly, add capacity later.
An optional bi-directional EV DC charger module — a future EV becomes part of the tower, not a separate cabinet and second install.
The AI brain coordinating solar, battery, grid and EV, optimising charge / discharge against your tariff automatically.
SigenStor key specifications
Figures below are the manufacturer specifications for the SigenStor platform. Exact inverter power, battery capacity and whether the EV DC charger module is fitted are all set at design stage to suit your property and supply.
| Specification | SigenStor |
|---|---|
| System type | 5-in-1: PV hybrid inverter + battery PCS + battery pack + optional EV DC charger + EMS |
| Single-phase inverter power | 3.6 kW to 12 kW (software-configurable) |
| Three-phase inverter power | 5 kW to ~25 kW (up to ~30 kW on some C&I listings) |
| MPPTs | 2 MPPT (3.6–6 kW) / 3–4 MPPT (8–12 kW); DC:AC ratio up to 2:1 |
| Battery capacity | 5.2 / 8.0 kWh stackable LFP modules, up to ~48 kWh per stack |
| Battery chemistry | LFP (LiFePO4) |
| Round-trip efficiency | 93–95% |
| Backup / switchover | EPS backup with 0 ms / sub-millisecond switchover |
| IP rating | IP66 — indoor or outdoor |
| Warranty | ~10 years |
| VAT | 0% VAT on installation until 31 March 2027 |
Three-phase power and integrated EV DC charging
One of the SigenStor's strongest cards in Scotland is its range. The single-phase variant covers terraced and semi-detached homes up to 6 kW, while the three-phase variant scales to roughly 25 kW — which matters around Edinburgh, Livingston and Stirling, where larger detached homes often have a three-phase supply that a single-phase-only battery simply cannot serve.
The optional integrated EV DC charger is the other differentiator. Rather than installing a separate charge-point cabinet on a second visit, the SigenStor can take a bi-directional EV DC module inside the tower. For households that prefer standalone AC charging, the Sigen EV AC Charger pairs natively with the same EMS — Ecoaim advises which route fits your vehicle and goals at survey.
EPS backup — staying powered through a Scottish power cut
The SigenStor provides EPS (Emergency Power Supply) backup with a 0 ms / sub-millisecond switchover, so supported circuits stay live through a grid outage. In storm-exposed parts of Scotland — where winter power cuts still happen — that is a genuinely useful feature rather than a spec-sheet line. The exact backup scope (whole-home or essential circuits) is set when we design your system.
mySigen and Sigen.AI — the intelligence layer
The SigenStor is monitored and scheduled from the mySigen app, and its Sigen.AI energy management continuously optimises when the system charges and discharges against your electricity tariff — for example charging the battery on cheap overnight or surplus-solar energy and discharging at peak. On a time-of-use tariff such as Octopus Flux, this automated arbitrage is where the real savings are made, without the household having to manage anything manually. Ecoaim configures the tariff strategy at commissioning.
Why the SigenStor suits Scottish Central Belt homes
The SigenStor suits Central Belt homes pursuing whole-home electrification — solar, battery, heat pump and EV on one coordinated system. The three-phase variant fits the larger detached homes around Edinburgh, Livingston and Stirling where three-phase supplies are common and a single-phase-only battery cannot serve the load. Ecoaim designs and installs from our Livingston EH54 base, supplied direct by SigEnergy's UK Platinum Distributor.
SigenStor price in Scotland
SigenStor battery from ~£2,500 per 5 kWh (ex-install); EV DC charger module from ~£3,500. Full installed price quoted on survey. 0% VAT until 31 March 2027. Because the SigenStor is configurable — inverter size, how many battery modules you stack, and whether the EV DC charger is fitted — the only accurate figure is a quote against your actual roof, supply and tariff. Ecoaim returns an itemised, fixed price in writing after a free survey.
Pricing reflects current manufacturer guidance and is indicative only; installed cost depends on specification, scaffolding, electrical works and your DNO requirements. 0% VAT applies to qualifying domestic installations until 31 March 2027.
Why specify the SigenStor with Ecoaim
- Sigenergy-certified installer — Ecoaim is a Sigenergy-certified installer, MCS-certified, based in Livingston, EH54.
- Platinum-Distributor-supplied — systems are supplied direct by sigenergy uk platinum distributor, not sourced through a chain of resellers.
- Among the first in Scotland to specify the SigenStor — design and install experience with the platform, not a first-timer learning on your roof.
- Design-led — we lead with design and install expertise, building on our EcoFlow-to-Sigenergy upgrade journey.
- Scotland-wide coverage — Central Belt focus from Edinburgh to Glasgow, plus the wider UK.
A mobile SigEnergy show-stand tour with the UK Platinum Distributor is being arranged, so customers across Scotland can see the SigenStor in person. Register your interest on the form and we will let you know dates as they are confirmed.
SigenStor — frequently asked questions
What does the SigenStor 5-in-1 actually include? +
Can the SigenStor power my home during a power cut? +
How much battery can I stack? +
Is Ecoaim qualified to install the SigenStor in Scotland? +
Ready to specify a SigenStor for your home?
Use the form alongside for a free survey and a fixed, itemised SigenStor quote in writing. Ecoaim designs every system around your property, supply and tariff — no high-pressure sales, and a response within 2 hours.
Explore the Sigenergy range
Stackable LFP battery modules — start at 5.2 kWh and grow to a ~48 kWh stack.
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Solar-aware AC home charging that pairs natively with the SigenStor EMS.
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The AI energy-management brain — whole-home backup control and tariff-aware optimisation.
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No high-pressure sales. No commission-driven scripts. Just a no-obligation survey + transparent quote — covering every postcode in Scotland's Central Belt.