Battery storage — Hampshire
Sigenergy SigenStor in Hampshire
What Sigenergy means for a Hampshire home, how it compares with the systems we fit, and a written answer on supply, installation and warranty if it is the one you want.
The six Hampshire towns we cover, from Basingstoke and Fleet in the north to Alton and Petersfield in the east, share one network operator and a fast-growing number of electric cars, which are the two things that shape a Sigenergy SigenStor decision most here. The SigenStor is the only battery line compared on our site with an optional DC charging module, and its stack can grow later. The county-wide picture is on our solar panels Hampshire page.
The battery system in HCE's own job photos is EnSmart; if a Sigenergy SigenStor is what you want, ask us and we will confirm in writing how it would be supplied, who installs and commissions it, and what warranty attaches. For how we approach battery sizing in general, see our battery storage page.
Quick answer
Sigenergy in Hampshire:
- Our own work: the battery systems in HCE's own job photos are EnSmart; if Sigenergy is what you want, ask us and we will confirm in writing how it would be supplied, who installs and commissions it, and what warranty attaches.
- Cost: the Energy Saving Trust puts home battery storage at £1,500 to £10,000, with a 5 kWh system at around £4,600; a quote for your home comes from a survey of your usage.
- VAT: residential battery installations carry 0% VAT until 31 March 2027, then 5% from 1 April 2027.
- Grid: every battery is notified to, or approved by, the local network operator depending on its size (G98 or G99); the installer handles it.
- Power cuts: a standard grid-tied battery shuts down when the grid does; backup has to be designed in and is never assumed.
- Who fits it: HCE is a NAPIT member (73495), MCS-certified for solar PV and battery storage via NAPIT, and a HIES Consumer Code member.
Figures: Energy Saving Trust (batteries, updated 19 August 2026) · HMRC VAT Notice 708/6. Product facts are the manufacturer's, cited below.
How a home battery gets fitted in Hampshire
Four steps from first call to switch-on. No pressure at any stage, and a straight answer if it would not pay its way.
- Step 1
Your usage, not a guess
We look at when your Hampshire home uses power, especially evenings, and your tariff, because that, not the sunniest month, decides the battery size.
- Step 2
Sizing and siting
Where the unit can go (garage, utility room or an outside wall, as the manufacturer allows), whether it pairs with existing panels, and a written, itemised quote.
- Step 3
Installation and notification
Fitting and commissioning, with the battery notified to or approved by your network operator depending on its size. Backup in a power cut only if it is designed in.
- Step 4
Settings and handover
Charge and discharge set up around your tariff, the app explained, and the warranty documents in your hand.
How Sigenergy fits Hampshire homes
Hampshire's market towns have a fairly even mix of house types. In Alton 29.7% of households live in semis, 23.9% in detached houses and 21.4% in terraces; Petersfield is 29.7% detached, 23.6% semi and 23.0% terraced. That means plenty of homes where a SigenStor can stand in a garage and plenty where it has to go on an outside wall. Sigenergy's datasheets give the modules as 62 kg (6.02 kWh) or 78 kg (9.04 kWh), 767 mm wide and 265 mm deep, with an IP66 rating and an operating range of −20 to 55°C, while its warranty recommends 10–30°C for battery life. The product page's view is that the SigenStor suits households planning a heat pump or EV more than small households with modest evening use.
Every one of the six town centres sits in SSEN Distribution's Southern Electric Power Distribution area, so the grid paperwork runs through SSEN, which says it aims to respond to fast-track small-generation applications within 10 working days. Sigenergy's 3.6 kW single-phase controller, at 16.0 A, is the largest that can be fitted and notified under G98; the 4.0 kW and above are G99, applied for at design stage and accepted before the installation date. Farnborough's town centre is 3.4 km from the UK Power Networks boundary, so addresses on that side should check their bill's Distributor ID.
Hampshire: sunshine, the grid and local uptake
PVGIS gives the six towns about 136–139 kWh in December and about 482–506 kWh in June for a 4 kWp due-south array, with Petersfield, inside the South Downs National Park, at the top. DESNZ records about 7,356 solar PV installations across East Hampshire (65.71 MW), 5,437 across Basingstoke and Deane (80.17 MW), 3,868 across Hart (75.36 MW) and 1,998 across Rushmoor (10.34 MW) at the end of 2025. Privately kept plug-in vehicles across the four councils rose from about 12,452 to 17,497 in the year to June 2026, about 40% (our sum and arithmetic), with Basingstoke and Deane alone going from about 4,382 to 6,203.
Ofgem's 2024/25 figures for Southern Electric Power Distribution show about 41.8 supply interruptions per 100 customers, inside its target of 46.1, and about 51.2 minutes lost per customer, above its target of 41.7. Those are licence-area averages. A SigenStor keeps circuits running in a cut only when it is designed with the Sigen Energy Gateway.
Local facts, sourced
Sigenergy and Hampshire in numbers
Every figure below comes from a named public or manufacturer source.
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Alton's 8,525 households: 29.7% semi-detached, 23.9% detached, 21.4% terraced, 21.3% purpose-built flats.
Source: Census 2021 via censusdata.uk, Alton TS044 accommodation type
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Petersfield's 6,859 households: 29.7% detached, 23.6% semi-detached, 23.0% terraced, 17.9% purpose-built flats.
Source: Census 2021, Petersfield built-up area E63006182, TS044 (censusdata.uk)
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June PVGIS output runs from about 482 kWh (Fleet, Aldershot) to 506 kWh (Petersfield) for a 4 kWp due-south array; December from about 136 kWh (Basingstoke) to 139 kWh (Fleet, Petersfield).
Source: PVGIS 5.3 (European Commission Joint Research Centre), PVGIS-SARAH3 2005–2023; 4 kWp, 35° tilt, due south, 14% losses, building-mounted; town-centre runs made 15 October 2026
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About 7,356 solar PV installations (65.71 MW) across East Hampshire at the end of 2025.
Source: DESNZ, Renewable electricity by local authority 2014 to 2025 (published 29 September 2026), solar PV sites and capacity, end of 2025, as first published
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Privately kept plug-in vehicles across Rushmoor, Hart, Basingstoke and Deane and East Hampshire: about 17,497 in June 2026, up from 12,452 (our sum).
Source: DfT and DVLA, VEH0142 licensed plug-in vehicles by local authority, privately kept, 2026 Q2 against 2025 Q2 (published 23 September 2026)
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About 17.18% of homes in East Hampshire and 16.93% in Basingstoke and Deane have no mains gas connection (2024 estimate).
Source: DESNZ, Subnational estimates of properties not connected to the gas network, 2024 (published 18 December 2025)
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All six town centres are in SSEN's Southern Electric Power Distribution area; Farnborough's is 3.4 km from the UKPN boundary.
Source: UK Power Networks licence boundaries (December 2024) and NESO GB DNO licence areas (May 2024), point-in-polygon on each town-centre point
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Ofgem 2024/25, Southern Electric Power Distribution: about 41.8 interruptions per 100 customers (target 46.1) and 51.2 minutes lost (target 41.7).
Source: Ofgem, RIIO-2 Electricity Distribution annual report 2024 to 2025, supplementary datafile, sheet "Ch2 outputs - reliability" (published 15 January 2026)
Data last reviewed: October 2026
Battery storage across Hampshire
Town by town, with each town's own sunshine figures and network operator: battery storage in Farnborough, battery storage in Fleet, battery storage in Basingstoke, battery storage in Aldershot, battery storage in Alton and battery storage in Petersfield.
The full specification is on our Sigenergy page. For how sizing, warranties and pairing with panels work, see our main battery storage guide, and for the wider area, solar panels across Hampshire. For a longer read, see Five battery brands for Hampshire homes: a grid-first guide.
Comparing systems for a Hampshire home? See EnSmart in Hampshire, Tesla Powerwall in Hampshire, EcoFlow PowerOcean in Hampshire and Fox ESS in Hampshire.
Sigenergy in Hampshire: questions
Will a SigenStor keep my Hampshire home powered in a cut?
Only if it is designed for it. Sigenergy's whole-home backup on the original SigenStor needs the separate Sigen Energy Gateway; without it the system shuts down with the grid. Whether whole-home or essential-circuits backup makes sense depends on your consumer unit, and it should be specified at design stage.
Is the SigenStor DC charging module worth it with an EV in Basingstoke?
The optional module charges at 12.5 or 25 kW DC over CCS2, faster than a 7 kW home wallbox, and can be bi-directional where the car supports it. It carries a 3-year warranty against the battery's 10 years, adds cost, and your car's compatibility should be confirmed before it is quoted. Many households are well served by a standard AC charger.
How long does SSEN take to approve a larger SigenStor?
SSEN says it aims to respond to fast-track small-generation applications within 10 working days. Any single-phase SigenStor controller above 3.6 kW needs that G99 approval before work starts, so the application goes in at design stage rather than the week of installation.