Battery storage — North London
EnSmart Battery Installation in North London
EnSmart batteries for North London homes, sized from your actual usage, with the grid paperwork, the seasons and the power-cut reality explained before you commit.
North London’s roofs run from Havering’s semis to Wembley’s blocks of flats, and the first question for an EnSmart SolarAll battery is often whether you can have one at all. We install EnSmart’s SolarAll-H inverters and ELV packs, the equipment in our own job photos, and in a semi-detached street the answer is usually yes: 41.2% of Havering’s 101,277 households live in semis (Census 2021), more than double London’s 18.6%.
In a flat, the building owner decides first. The area overview is on solar panels in north London, the general guide on battery storage, and borough detail on battery storage in Romford, Harrow and Enfield.
Quick answer
EnSmart in North London:
- Our own work: EnSmart is the battery system in HCE's own job photos; the survey confirms whether it suits your home before anything is quoted.
- 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 North London
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 North London 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 EnSmart fits North London homes
A Havering or Harrow semi (Harrow’s 89,642 households are 37.1% semi-detached) usually has a side garage or utility room, which is what the EnSmart ELV-W wall pack needs: it is IP50 and indoor-only. The IP65 SolarAll-H inverter can go next to it or on an outside wall. Enfield is more mixed: of its 120,923 households, 28.9% live in terraced houses and 30.4% in purpose-built flats. For a terrace with no spare room, the ELV-F floor packs, rated IP55 for outdoors away from direct sunlight, are the fallback. For flats, UK Power Networks needs the building owner’s permission before solar or storage work starts on a multi-occupied building, and in Wembley Park ward 98.2% of households live in purpose-built flats.
Most of the north London town centres we cover sit in UK Power Networks’ Eastern Power Networks area, from Barnet and Harrow to Enfield and Romford; Walthamstow’s sits in its London Power Networks area, and Hendon, Tottenham, Chingford and Wembley are within 1.5 km of a boundary, so we confirm by postcode. EnSmart’s single-phase SolarAll-H runs 3–6 kW on the datasheet; under G98 we notify equipment up to 16 A per phase (3.68 kW) after commissioning, and anything larger needs a G99 approval before work begins.
North London: sunshine, the grid and local uptake
PVGIS puts a 4 kWp south-facing array at about 138 kWh in December (Edgware) to 143 kWh (Tottenham and Romford), and at about 474 kWh (Edgware) to 489 kWh (Romford) in June, so December is about 29–30% of June on our arithmetic, a slightly smaller gap than in our Surrey towns. That still means about 4.5 to 4.6 kWh on an average December day, under one 5.12 kWh ELV-W pack. DESNZ records about 20,359 solar PV installations across Barnet, Harrow, Brent, Haringey, Enfield, Waltham Forest and Havering (end of 2025, our sum), and DVLA about 48,090 privately kept plug-in vehicles across the seven boroughs, up from about 38,569 a year earlier (our sum).
Ofgem’s 2024/25 figures show about 44.6 supply interruptions per 100 customers and about 32.5 minutes lost per customer for Eastern Power Networks, and about 11.2 and 10.5 for London Power Networks, planned and unplanned. A SolarAll installation provides backup only when designed and wired for it.
Local facts, sourced
EnSmart and North London in numbers
Every figure below comes from a named public or manufacturer source.
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41.2% of Havering’s 101,277 households live in semi-detached houses, the second-highest share among London’s 33 local authorities and more than double London’s 18.6%.
Source: ONS Census 2021, TS044 Accommodation type via Nomis (Havering E09000016; London E12000007)
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Of Enfield’s 120,923 households, 28.9% live in terraced houses, 24.8% semi-detached, 7.5% detached and 30.4% in purpose-built flats.
Source: ONS Census 2021, TS044 Accommodation type, Enfield E09000010 (Nomis)
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In Wembley Park ward, 98.2% of the 2,669 households lived in a purpose-built block of flats at the 2021 Census.
Source: ONS Census 2021 via Nomis, TS044, Wembley Park ward E05013516
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UK Power Networks needs the building owner’s permission before solar or storage work starts on a block of flats or other multi-occupied building.
Source: UK Power Networks, Solar and storage: cost, time and what’s involved
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PVGIS gives a 4 kWp south-facing array about 143 kWh in December and 489 kWh in June in Romford, and about 138 kWh and 474 kWh in Edgware.
Source: European Commission JRC, PVGIS 5.3 (PVGIS-SARAH3 2005–2023; 4 kWp, 35° tilt, due south, 14% losses, building-mounted), runs of 15–16 October 2026 at each town-centre point
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DVLA records 12,097 privately kept plug-in vehicles across Barnet borough at the end of June 2026, up from 10,089 a year earlier.
Source: DfT and DVLA, VEH0142 licensed plug-in vehicles by local authority (published 23 September 2026), privately kept, end of June 2026 and end of June 2025
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DESNZ records 3,928 solar PV installations across Havering and 3,477 across Barnet at the end of 2025.
Source: DESNZ, Renewable electricity by local authority 2014 to 2025 (Regional Renewable Statistics, published 29 September 2026), solar PV sites and capacity at end of 2025, as first published
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Ofgem’s 2024/25 figures for Eastern Power Networks: about 44.6 supply interruptions per 100 customers and 32.5 minutes lost per customer, planned and unplanned.
Source: Ofgem, RIIO-2 Electricity Distribution annual report 2024 to 2025, supplementary datafile (published 15 January 2026), CI and CML, planned and unplanned
Data last reviewed: October 2026
Battery storage across North London
Town by town, with each town's own sunshine figures and network operator: battery storage in Barnet, battery storage in Finchley, battery storage in Hendon, battery storage in Edgware, battery storage in Harrow, battery storage in Wembley, battery storage in Muswell Hill, battery storage in Wood Green, battery storage in Tottenham, battery storage in Edmonton, battery storage in Enfield, battery storage in Walthamstow, battery storage in Chingford and battery storage in Romford.
The full specification is on our EnSmart page. For how sizing, warranties and pairing with panels work, see our main battery storage guide, and for the wider area, solar panels across North London. For a longer read, see Choosing a north London home battery: five brands compared.
Comparing systems for a North London home? See Tesla Powerwall in North London, Sigenergy in North London, EcoFlow PowerOcean in North London and Fox ESS in North London.
EnSmart in North London: questions
Can I have an EnSmart battery in a north London flat?
Only with the building owner’s agreement. UK Power Networks needs the building owner’s permission before storage work starts on a multi-occupied building, and if you rent, the landlord decides. Even with consent, the ELV-W pack is IP50 and must go indoors, in a spot that meets EnSmart’s installation rules. Start with the freeholder; we can then check the flat itself.
Which network handles an EnSmart installation in Romford, Harrow or Enfield?
Those town centres sit in UK Power Networks’ Eastern Power Networks area; Walthamstow’s is on its London Power Networks area. We submit the paperwork: a G98 notification after commissioning for equipment up to 16 A per phase (3.68 kW), or a G99 application approved before work for a larger SolarAll-H.
Does an EnSmart battery make sense with an EV in Barnet?
It can. DVLA counts 12,097 privately kept plug-in vehicles across Barnet borough (June 2026), up from 10,089 a year earlier. Most drivers charge the car straight from an off-peak tariff; the battery covers the house’s evening load. If you want a charger too, EnSmart’s SmartBee-M (7 kW, IP65, OCPP 1.6) is the one in our own job photos; note that a home charger carries 20% VAT, while the battery carries 0% until 31 March 2027.
How much does a north London roof make in winter for an EnSmart battery?
On PVGIS figures a 4 kWp south-facing array here makes about 138 to 143 kWh in December, roughly 4.5 kWh a day (our arithmetic), less than one 5.12 kWh pack. In June it is about 474 to 489 kWh. So we size the battery to your evening use, not to winter self-sufficiency, and add packs later if your needs grow.