North West England is split between SP Electricity North West (Manchester, Lancashire, Cumbria; renamed from Electricity North West in August 2025) and SP Energy Networks' Manweb area (Liverpool, the Wirral, Chester, Warrington, Crewe). Manweb's area has Britain's highest unit rates and the widest Octopus Flux spread (21.44p), so in this site's model a 10 kWh battery with solar on Flux saves about £455 a year there, the most of any region, against about £417 in the Manchester area.
Your electricity region and network operator
North West England spans 2 electricity regions, each with its own prices and network operator:
| Electricity region | Network operator (DNO) | Flat unit rate | Standing charge (pence a day) |
|---|---|---|---|
| North West England (G) | SP Electricity North West (formerly Electricity North West, renamed August 2025) | 26.13p/kWh | 44.32 |
| Merseyside and North Wales (D) | SP Energy Networks (SP Manweb) | 27.66p/kWh | 67.47 |
What a battery can buy low and use high
The rates that decide a battery's saving in North West England:
| Rate | North West England | Merseyside and North Wales |
|---|---|---|
| Octopus Flux import, 2am to 5am | 15.17p | 16.08p |
| Octopus Flux import, 4pm to 7pm | 35.38p | 37.52p |
| Octopus Flux export, 4pm to 7pm | 29.25p | 30.68p |
| Octopus Go overnight import | 8.62p | 8.62p |
| Octopus Go daytime import | 30.70p | 32.28p |
| Outgoing Octopus flat export | 12.00p | 12.00p |
| Agile Octopus, average of each day's cheapest 3 hours | 14.31p | 15.16p |
| Agile Octopus, average 4pm to 7pm | 45.11p | 47.88p |
| Flux spread: peak import minus off-peak | 20.21p | 21.44p |
Solar yield across North West England
Modelled output of a 4 kWp south-facing array:
| Place | kWh a year | June | December | Electricity region |
|---|---|---|---|---|
| Manchester | 3,544 | 443 | 113 | North West England |
| Liverpool | 3,860 | 478 | 112 | Merseyside and North Wales |
| Preston | 3,681 | 463 | 106 | North West England |
| Chester | 3,836 | 472 | 120 | Merseyside and North Wales |
| Carlisle | 3,648 | 460 | 97 | North West England |
How often the power goes off
Ofgem's reliability figures for the networks serving North West England (lower is better):
| Network area | Interruptions per 100 customers | Minutes lost per customer | Against the GB average |
|---|---|---|---|
| North Western England | 26.07 | 27.09 | Fewer minutes lost |
| Cheshire, Merseyside and Northern Wales | 28.55 | 34.54 | Close to average |
Solar already on North West England's roofs: DESNZ counts 158,602 domestic-scale solar installations in North West England (597.6 MW) at the end of Jul 2026.
A home in Manchester using 3,000 kWh a year, with 4 kWp of solar, adds a 10 kWh battery. Yearly savings with Manchester's solar yield and North West England rates, against no battery on a flat tariff:
| Tariff with the battery | Modelled saving a year | Energy charged from the grid |
|---|---|---|
| Octopus Flux, selling spare stored energy at the peak | £417 | 1,456 kWh |
| Staying on a flat tariff (solar storage only) | £149 | 0 kWh |
| Same home with no solar, battery on Agile Octopus | £300 | 3,258 kWh |
| Same home with no solar and an electric car, battery on Octopus Go | £482 | 3,258 kWh |
Flux needs solar panels and Go is for electric car owners. How the model works · try your own numbers.
Two networks, opposite ends of the price table
| SP Electricity North West | SP Energy Networks (Manweb) | |
|---|---|---|
| Towns confirmed by postcode | Manchester, Stockport, Macclesfield, Preston, Carlisle, Kendal, Barrow-in-Furness | Liverpool, Wallasey, Chester, Warrington, Crewe |
| Flexible Octopus standing charge (26 Sep 2026) | 44.32p a day, second-lowest in Britain | 67.47p a day, the highest in Britain |
| Flexible Octopus unit rate | 26.13p | 27.66p, the highest in Britain |
| Flux spread (4pm to 7pm minus 2am to 5am) | 20.21p | 21.44p, the widest in Britain |
| Modelled saving, 10 kWh with 4 kWp solar on Flux | £417 a year | £455 a year |
| Ofgem 2024/25 interruptions per 100 customers | 26.07 | 28.55 |
| Minutes lost per customer | 27.09 | 34.54 |
The Manweb area’s high prices hurt a household without a battery, but they help one with a battery, because every kWh shifted from the peak saves more. Its Octopus Go day rate is the highest too (32.28p), which is why an overnight EV tariff battery models at about £527 a year there, again the most of any region.
A name change to know
Electricity North West became SP Electricity North West on 4 August 2025, after its acquisition by the Iberdrola and ScottishPower group, and Ofgem now uses the new name. Some lookup tools still show the old one; both refer to the same network company.
Reliable networks, weaker winter sun
Both North West networks beat the GB average on interruptions: Ofgem’s 2024/25 data puts SP Electricity North West at 26.07 per 100 customers, the second-best in Britain after London. Backup is therefore less of a driver here than in Yorkshire or the South West.
Solar is more modest. PVGIS gives a 4 kWp south-facing array 3,544 kWh a year in Manchester, 3,681 in Preston and 3,648 in Carlisle, but 3,860 in Liverpool and 3,836 in Chester, where the coast and the Cheshire plain help. December output is low across the region, about 97 to 120 kWh, so a North West solar battery depends on cheap-rate charging from November to February. DESNZ counts 158,602 domestic-scale solar installations in the North West.
Funding
England’s rules apply to the North West: 0% VAT on installed batteries until 31 March 2027; lower-interest Warm Homes loans of up to £15,000 for a battery; and a council Warm Homes: Local Grant for eligible low-income homes, which can include a battery alongside solar panels. See grants and funding.
Getting quotes
Your network decides your rates and your savings, so give installers your full postcode. On the Manweb side, ask whether the installation will need an export limit, because the region’s high peak export rate (30.68p on Flux) makes exporting stored energy more valuable than elsewhere. Compare battery storage quotes and run them through the calculator with your own region selected.
Home batteries in North West England: questions
Who is the network operator in Manchester?
SP Electricity North West, which was called Electricity North West until it was renamed on 4 August 2025. Manchester, Stockport, Macclesfield, Preston, Carlisle, Kendal and Barrow-in-Furness were all confirmed by postcode.
Who is the network operator in Liverpool?
SP Energy Networks, through its Manweb licence area, which also covers the Wirral, Chester, Warrington and Crewe and extends into North and Mid Wales. It gives installers 30 days to notify it after commissioning a small system, rather than the 28 days most operators use.
Why does a battery save more in Liverpool than in Manchester?
Because the gap between cheap and expensive electricity is wider on the Manweb network. On Octopus Flux on 26 September 2026 Merseyside's peak was 37.52p and its cheap rate 16.08p, a 21.44p spread, the widest in Britain; Manchester's was 20.21p. A battery earns on that gap.