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So Jellyfish 12m by So Energy: regional prices, payment types, fuel options & Economy 7

A UK-focused guide to every version (now closed to new customers) of So Jellyfish 12m from So Energy, including Dual Fuel, Electricity options, payment methods such as Monthly Direct Debit, Economy 7 and standard-rate versions and pricing across 13 PES regions.

  • See the main So Jellyfish 12m option groups in one place
  • Check region-by-region unit rates and standing charges for your exact service type, payment method and meter setup
  • Compare this tariff fairly with the wider market using your postcode and usage
Switch to So Energy — check your price See all So Energy tariffs

Unit rates and standing charges vary by region, meter type, service type and payment method. A postcode-level quote is still the fairest comparison.

So Jellyfish 12m is no longer open to new customers. If you're already on it, the details below still apply — to switch, compare So Energy's current tariffs and the wider market.

See current So Energy tariffs →

Fast answer: what most people should know about So Jellyfish 12m

So Jellyfish 12m is best treated as a single tariff family page because the same tariff name can appear across multiple service types, payment methods, Economy 7 settings and 14 PES regions. The best version for you depends on your postcode, meter setup and how you actually pay for energy.

What our price data says: So Jellyfish 12m is closed to new customers: a fixed tariff for 12 months, exit fee £75 per fuel. Against the Ofgem cap for 1 October to 31 December 2026 its electricity unit rate is below the cap in 5 of 14 regions and above it in 9 (from −0.71p/kWh to +0.55p/kWh) and its standing charge is below the cap in 7 of 14 regions and above it in 7 (from −2.04p a day to +2.08p a day). In London the unit rate is 26.66p against a 26.60p cap and the standing charge 41.32p a day against 42.92p; a home at Ofgem typical use (2,500 kWh of electricity and 9,500 kWh of gas a year, Direct Debit) could pay about £1,751 a year on this tariff against £1,706 at the cap (+£45), standing charges included. See every region

Editor's rule of thumb: compare only like-for-like. If you are on Direct Debit, compare Direct Debit. If you need Economy 7, compare Economy 7. If you want dual fuel, do not compare it against an electricity-only row and assume the result is equivalent.

Key takeaways

  • Service types: Dual Fuel, Electricity
  • Payment methods: Monthly Direct Debit
  • Regions covered: 13 PES regions
  • Economy 7: available on at least one option group
  • Exit fee: up to £75.00 per fuel

What to have ready

  • Your postcode for regional pricing
  • Your meter type, including Economy 7 if relevant
  • Your annual usage or a recent bill
  • Your preferred payment method
  • Whether you need electricity-only, gas-only or dual fuel

If you're in a hurry

Use a whole-of-market quote first, then check the exact row in the regional tables below that matches your setup.

Compare prices with your postcode

Compare So Jellyfish 12m with the wider market

This tariff can look different depending on region, service type, payment method and Economy 7 status. That means the fairest comparison is always postcode-based and like-for-like.

Good to know: a tariff that looks cheapest in one PES region may not be cheapest in another. Use your postcode rather than relying on a headline national figure.

What happens after you compare?

  1. We estimate annual costs using your postcode, meter type and payment method.
  2. You can compare that result with the relevant So Jellyfish 12m option group on this page.
  3. If you proceed, choose the exact regional row that matches your setup before switching.

Always review tariff facts and contract terms before you complete a switch.

Get your whole-of-market quote

Tell us a few details to see estimated prices, including So Energy tariffs where available for your postcode, meter and payment method.

Start your comparison

By submitting, you confirm this is for a UK home energy comparison. We’ll use your details to provide quotes and contact you about your comparison. You can opt out at any time.

So Jellyfish 12m option groups explained

To keep this page useful and SEO-friendly, we group the underlying records by service type, payment method and Economy 7. Inside each group, you can then see the regional prices across the PES areas we hold.

Fuel / service types

Current records show these service types for So Jellyfish 12m: Dual Fuel, Electricity.

  • Dual fuel can be convenient but is not always cheapest.
  • Single-fuel options may suit households comparing separate suppliers.

Payment types

Current payment methods listed include Monthly Direct Debit.

  • Always compare the same payment method.
  • Direct Debit, bill payment and prepayment can produce different annual costs.

Regional prices

This page includes regional records across 13 PES regions, because energy prices are not the same everywhere in Great Britain.

  • Use postcode-based quotes for the most accurate comparison.
  • Unit rates and standing charges vary by region and are shown in the tables below.

Internal links for this tariff cluster

Read our So Energy supplier guide, browse all So Energy tariffs, or compare broader categories such as Economy 7, dual fuel and Direct Debit tariffs.

Lowest electricity unit rate shown

The lowest electricity unit rate currently shown is 25.242p/kWh under the Dual Fuel / Monthly Direct Debit / standard-rate option group. Rates range up to 27.152p/kWh across regions for this group. A postcode-level quote is needed to estimate your annual cost.

So Jellyfish 12m comparison table (grouped by option type)

This summary table groups the tariff by the differences that matter most: service type, payment method and Economy 7. Each row then links to a regional breakdown so you can see all PES-region unit rates and standing charges.

Service type Payment method Economy 7 Regions Elec rate range (p/kWh) Contract Exit fee (per fuel) Details
Dual Fuel Monthly Direct Debit No 14 25.242 – 27.152 12 months £75.00 View regional prices
Dual Fuel Monthly Direct Debit Yes 14 29.611 – 34.583 12 months £75.00 View regional prices
Electricity Monthly Direct Debit No 14 25.242 – 27.152 12 months £75.00 View regional prices
Electricity Monthly Direct Debit Yes 14 29.611 – 34.583 12 months £75.00 View regional prices

Decision checklist

  • Pick the right fuel/service type first.
  • Keep the payment method the same across comparisons.
  • Only choose an Economy 7 row if your meter and usage pattern suit it.
  • Use your postcode to sense-check the regional prices.

Why regional rows matter

  • Standing charges and unit rates vary by PES region.
  • A tariff that looks cheap nationally may be less competitive in your area.
  • Regional differences can materially change annual cost estimates.

So Jellyfish 12m against the Ofgem price cap, 1 October to 31 December 2026

So Jellyfish 12m is closed to new customers: a fixed tariff for 12 months, exit fee £75 per fuel. Against the Ofgem cap for 1 October to 31 December 2026 its electricity unit rate is below the cap in 5 of 14 regions and above it in 9 (from −0.71p/kWh to +0.55p/kWh) and its standing charge is below the cap in 7 of 14 regions and above it in 7 (from −2.04p a day to +2.08p a day). In London the unit rate is 26.66p against a 26.60p cap and the standing charge 41.32p a day against 42.92p; a home at Ofgem typical use (2,500 kWh of electricity and 9,500 kWh of gas a year, Direct Debit) could pay about £1,751 a year on this tariff against £1,706 at the cap (+£45), standing charges included.

Electricity unit rate, p/kWh and standing charge, p/day for each region against the Ofgem capElectricity unit rate, p/kWhStanding charge, p/daythis tariffOfgem cap2425262728293540455055606570YorkshireYorkshire: 25.24p/kWh vs cap 25.60p (−0.36p)−0.36pYorkshire: standing charge 60.14p/day vs cap 61.67p (−1.53p/day, −£6 a year)−1.53pSouth ScotlandSouth Scotland: 25.46p/kWh vs cap 26.11p (−0.65p)−0.65pSouth Scotland: standing charge 60.79p/day vs cap 61.41p (−0.62p/day, −£2 a year)−0.62pEast MidlandsEast Midlands: 25.72p/kWh vs cap 25.36p (+0.36p)+0.36pEast Midlands: standing charge 51.74p/day vs cap 51.45p (+0.29p/day, +£1 a year)+0.29pNorth EastNorth East: 25.83p/kWh vs cap 25.46p (+0.37p)+0.37pNorth East: standing charge 61.37p/day vs cap 61.58p (−0.21p/day, −£1 a year)−0.21pWest MidlandsWest Midlands: 25.95p/kWh vs cap 25.60p (+0.35p)+0.35pWest Midlands: standing charge 56.66p/day vs cap 57.23p (−0.57p/day, −£2 a year)−0.57pEasternEastern: 26.40p/kWh vs cap 26.61p (−0.21p)−0.21pEastern: standing charge 51.76p/day vs cap 51.84p (−0.08p/day, level a year)−0.08pSouth EastSouth East: 26.55p/kWh vs cap 26.88p (−0.33p)−0.33pSouth East: standing charge 53.10p/day vs cap 52.32p (+0.78p/day, +£3 a year)+0.78pLondonLondon: 26.66p/kWh vs cap 26.60p (+0.06p)+0.06pLondon: standing charge 41.32p/day vs cap 42.92p (−1.60p/day, −£6 a year)−1.60pNorth WestNorth West: 26.66p/kWh vs cap 26.49p (+0.17p)+0.17pNorth West: standing charge 47.76p/day vs cap 45.68p (+2.08p/day, +£8 a year)+2.08pSouth WalesSouth Wales: 26.72p/kWh vs cap 26.55p (+0.17p)+0.17pSouth Wales: standing charge 55.47p/day vs cap 55.41p (+0.06p/day, level a year)+0.06pSouthernSouthern: 26.76p/kWh vs cap 26.47p (+0.29p)+0.29pSouthern: standing charge 49.51p/day vs cap 47.81p (+1.70p/day, +£6 a year)+1.70pSouth WestSouth West: 26.82p/kWh vs cap 26.58p (+0.24p)+0.24pSouth West: standing charge 56.56p/day vs cap 55.58p (+0.98p/day, +£4 a year)+0.98pNorth ScotlandNorth Scotland: 26.90p/kWh vs cap 26.35p (+0.55p)+0.55pNorth Scotland: standing charge 55.32p/day vs cap 55.14p (+0.18p/day, +£1 a year)+0.18pMerseyside & N WalesMerseyside & N Wales: 27.15p/kWh vs cap 27.86p (−0.71p)−0.71pMerseyside & N Wales: standing charge 65.62p/day vs cap 67.66p (−2.04p/day, −£7 a year)−2.04p
RegionElec p/kWhCap p/kWhStanding p/dayCap p/dayStanding £/monthGas p/kWhGas capGas standing p/day£/yr typicalCap £/yrvs cap
Yorkshire25.2425.6060.1461.6718.298.467.9029.491,7621,724+£38
Southern Scotland25.4626.1160.7961.4118.498.387.8729.491,7621,734+£28
East Midlands25.7225.3651.7451.4515.748.477.8229.491,7441,672+£72
North Eastern England25.8325.4661.3761.5818.678.377.9229.491,7731,722+£50
West Midlands25.9525.6056.6657.2317.248.557.9029.491,7751,708+£67
Eastern England26.4026.6151.7651.8415.748.467.9129.491,7601,713+£47
South Eastern England26.5526.8853.1052.3216.158.528.0529.491,7741,735+£40
London26.6626.6041.3242.9212.578.708.1529.491,7511,706+£45
North Western England26.6626.4947.7645.6814.538.467.8629.491,7521,684+£67
Southern Wales26.7226.5555.4755.4116.878.608.0929.491,7951,744+£51
Southern England26.7626.4749.5147.8115.068.728.1729.491,7861,719+£67
South Western England26.8226.5856.5655.5817.208.608.1229.491,8011,746+£55
Northern Scotland26.9026.3555.3255.1416.838.327.8729.491,7731,717+£56
Merseyside and Northern Wales27.1527.8665.6267.6619.968.457.9129.491,8281,805+£24
Source: this tariff's newest published rates in our tariff feed (snapshot 12 Sep 2026; electricity without VAT (zero-rated 1 Oct 2026 to 31 Mar 2027); gas including 5% VAT; Monthly Direct Debit, single-rate meter). Cap: Ofgem's regional price cap, 1 October to 31 December 2026, Direct Debit, single-rate, as published (https://www.ofgem.gov.uk/your-energy-supply/your-energy-bill/energy-price-cap-unit-rates-and-standing-charges). Annual figures are modelled at Ofgem typical use (2,500 kWh of electricity and 9,500 kWh of gas a year, Direct Debit), standing charges included, before any discounts or credits; what you pay depends on your usage and meter.

So Jellyfish 12m on an Economy 7 meter

Economy 7 version in London: 33.24p/kWh by day and 15.03p/kWh in the seven off-peak hours, which are set by your meter and network operator, not by the tariff; standing charge 41.65p a day. It costs less than this tariff's single-rate version (26.66p/kWh, 41.32p a day) once at least 36% of your electricity is used off-peak, modelled at 2,500 kWh a year; at 50% off-peak the Economy 7 version is −£62 a year.

Source: this tariff's newest two-rate and single-rate rows in our tariff feed (snapshot 12 Sep 2026; electricity without VAT (zero-rated 1 Oct 2026 to 31 Mar 2027); Monthly Direct Debit). Modelled from the rates with standing charges included; no off-peak clock times are stored for Economy 7, which depend on your meter.

Dual Fuel, Monthly Direct Debit, standard-rate: regional prices

Unit rates are shown in pence per kWh (p/kWh). Standing charges are shown in pence per day (p/day), calculated from the yearly figures. Use the row that matches your location when you switch.

PES region Elec rate (p/kWh) Elec standing (p/day) Gas rate (p/kWh) Gas standing (p/day) Contract Exit fee (per fuel) Switch
East Midlands 25.723 51.74 8.468 29.49 12 months £75.00 Switch to this tariff
Eastern England 26.404 51.76 8.456 29.49 12 months £75.00 Switch to this tariff
Merseyside & North Wales 27.152 65.62 8.447 29.49 12 months £75.00 Switch to this tariff
North East England 25.831 61.37 8.370 29.49 12 months £75.00 Switch to this tariff
North Scotland 26.901 55.32 8.324 29.49 12 months £75.00 Switch to this tariff
North West England 26.660 47.76 8.458 29.49 12 months £75.00 Switch to this tariff
South East England 26.546 53.10 8.518 29.49 12 months £75.00 Switch to this tariff
South East England 26.659 41.32 8.696 29.49 12 months £75.00 Switch to this tariff
South England 26.756 49.51 8.719 29.49 12 months £75.00 Switch to this tariff
South Scotland 25.463 60.79 8.378 29.49 12 months £75.00 Switch to this tariff
South Wales 26.716 55.47 8.597 29.49 12 months £75.00 Switch to this tariff
South West England 26.824 56.56 8.595 29.49 12 months £75.00 Switch to this tariff
West Midlands 25.947 56.66 8.546 29.49 12 months £75.00 Switch to this tariff
Yorkshire 25.242 60.14 8.463 29.49 12 months £75.00 Switch to this tariff

Dual Fuel, Monthly Direct Debit, Economy 7: regional prices

Unit rates are shown in pence per kWh (p/kWh). Standing charges are shown in pence per day (p/day), calculated from the yearly figures. Use the row that matches your location when you switch.

PES region Elec rate (p/kWh) E7 off-peak (p/kWh) Elec standing (p/day) Gas rate (p/kWh) Gas standing (p/day) Contract Exit fee (per fuel) Switch
East Midlands 34.142 13.011 52.07 8.468 29.49 12 months £75.00 Switch to this tariff
Eastern England 33.811 14.277 52.09 8.456 29.49 12 months £75.00 Switch to this tariff
Merseyside & North Wales 33.105 16.009 65.95 8.447 29.49 12 months £75.00 Switch to this tariff
North East England 30.299 16.767 61.70 8.370 29.49 12 months £75.00 Switch to this tariff
North Scotland 31.431 16.845 55.65 8.324 29.49 12 months £75.00 Switch to this tariff
North West England 30.966 16.949 48.09 8.458 29.49 12 months £75.00 Switch to this tariff
South East England 34.583 13.749 53.43 8.518 29.49 12 months £75.00 Switch to this tariff
South East England 33.237 15.031 41.65 8.696 29.49 12 months £75.00 Switch to this tariff
South England 32.055 16.213 49.84 8.719 29.49 12 months £75.00 Switch to this tariff
South Scotland 29.611 16.180 61.13 8.378 29.49 12 months £75.00 Switch to this tariff
South Wales 30.171 18.005 55.81 8.597 29.49 12 months £75.00 Switch to this tariff
South West England 32.180 16.153 56.89 8.595 29.49 12 months £75.00 Switch to this tariff
West Midlands 31.832 15.631 56.99 8.546 29.49 12 months £75.00 Switch to this tariff
Yorkshire 31.057 15.246 60.47 8.463 29.49 12 months £75.00 Switch to this tariff

Electricity, Monthly Direct Debit, standard-rate: regional prices

Unit rates are shown in pence per kWh (p/kWh). Standing charges are shown in pence per day (p/day), calculated from the yearly figures. Use the row that matches your location when you switch.

PES region Elec rate (p/kWh) Elec standing (p/day) Contract Exit fee (per fuel) Switch
East Midlands 25.723 51.74 12 months £75.00 Switch to this tariff
Eastern England 26.404 51.76 12 months £75.00 Switch to this tariff
Merseyside & North Wales 27.152 65.62 12 months £75.00 Switch to this tariff
North East England 25.831 61.37 12 months £75.00 Switch to this tariff
North Scotland 26.901 55.32 12 months £75.00 Switch to this tariff
North West England 26.660 47.76 12 months £75.00 Switch to this tariff
South East England 26.546 53.10 12 months £75.00 Switch to this tariff
South East England 26.659 41.32 12 months £75.00 Switch to this tariff
South England 26.756 49.51 12 months £75.00 Switch to this tariff
South Scotland 25.463 60.79 12 months £75.00 Switch to this tariff
South Wales 26.716 55.47 12 months £75.00 Switch to this tariff
South West England 26.824 56.56 12 months £75.00 Switch to this tariff
West Midlands 25.947 56.66 12 months £75.00 Switch to this tariff
Yorkshire 25.242 60.14 12 months £75.00 Switch to this tariff

Electricity, Monthly Direct Debit, Economy 7: regional prices

Unit rates are shown in pence per kWh (p/kWh). Standing charges are shown in pence per day (p/day), calculated from the yearly figures. Use the row that matches your location when you switch.

PES region Elec rate (p/kWh) E7 off-peak (p/kWh) Elec standing (p/day) Contract Exit fee (per fuel) Switch
East Midlands 34.142 13.011 52.07 12 months £75.00 Switch to this tariff
Eastern England 33.811 14.277 52.09 12 months £75.00 Switch to this tariff
Merseyside & North Wales 33.105 16.009 65.95 12 months £75.00 Switch to this tariff
North East England 30.299 16.767 61.70 12 months £75.00 Switch to this tariff
North Scotland 31.431 16.845 55.65 12 months £75.00 Switch to this tariff
North West England 30.966 16.949 48.09 12 months £75.00 Switch to this tariff
South East England 34.583 13.749 53.43 12 months £75.00 Switch to this tariff
South East England 33.237 15.031 41.65 12 months £75.00 Switch to this tariff
South England 32.055 16.213 49.84 12 months £75.00 Switch to this tariff
South Scotland 29.611 16.180 61.13 12 months £75.00 Switch to this tariff
South Wales 30.171 18.005 55.81 12 months £75.00 Switch to this tariff
South West England 32.180 16.153 56.89 12 months £75.00 Switch to this tariff
West Midlands 31.832 15.631 56.99 12 months £75.00 Switch to this tariff
Yorkshire 31.057 15.246 60.47 12 months £75.00 Switch to this tariff

Costs, exclusions and common pitfalls to check

Most mistakes happen when the wrong regional or payment-type version of the tariff is compared. Use these checks before switching.

1) Region matters

There are separate regional records because energy pricing differs across PES areas. Do not assume a headline price applies nationally.

2) Payment method affects price

Direct Debit, bill payment and prepayment variants can differ materially. Compare like-for-like only.

3) Economy 7 is usage-sensitive

Economy 7 can help if enough usage is overnight, but can cost more overall if most use is daytime.

4) Fuel bundle changes the comparison

Dual fuel should not be compared directly with electricity-only rows unless you normalise the usage assumptions.

5) Exit fees reduce flexibility

Records shown for this tariff include exit fees of up to £75.00 per fuel. Check the exact regional row before switching.

6) Postcode still beats region-only estimates

Region is useful for guidance, but a postcode-based quote is more precise because it reflects the actual tariff availability and pricing for your home.

Helpful shortcut: if you are not sure this is the right product family, compare all So Energy tariffs before drilling into the regional tables.

So Jellyfish 12m: FAQs

Why are there so many records for the same tariff name?

Because the tariff can vary by service type, payment method, Economy 7 status and region. This page groups them together so you can compare them in one place.

Are prices for So Jellyfish 12m the same in every region?

No. This page includes region-level records because unit rates and standing charges differ across PES regions. Your postcode is still the best way to confirm what you would actually pay.

Does So Jellyfish 12m come with Economy 7?

Yes. At least one Economy 7 option group is currently listed on this page, with separate day and off-peak unit rates shown per region.

Can I get So Jellyfish 12m as electricity-only, gas-only or dual fuel?

Current records show these service types: Dual Fuel, Electricity. Availability still depends on your home and supplier rules.

How do I switch to the exact regional option I want?

Use the grouped comparison table to find the right option type, then choose the regional row below it that matches your area and click the switch link.

Can I compare this with other tariffs from the same supplier?

Yes. Visit the So Energy tariffs page to compare other current products from the same supplier.

Will switching affect my supply?

In normal circumstances, no. The switch is administrative and your supply continues while the new tariff is set up.

Trust, methodology and related pages

Page details

Supplier
So Energy
Tariff family
So Jellyfish 12m
Regions shown
13
Page type
Canonical tariff family page

How we assess So Jellyfish 12m

  • Grouped tariff view: we group records with the same tariff name into one page to avoid duplicate pages and to make comparison easier.
  • Regional realism: we show multiple PES-region records because energy prices vary by area.
  • Like-for-like comparison: we encourage comparison using the same payment method, service type and meter assumptions wherever possible.
  • Rate transparency: we show actual unit rates (p/kWh) and standing charges (p/day) so you can estimate costs using your own usage figures.
  • Availability caveat: the exact tariff you can join may still depend on your postcode and supplier eligibility checks.

Explore more from So Energy

We recommend checking the supplier's tariff information and product terms before you switch, as regional availability and rates can change quickly.

Ready to compare So Jellyfish 12m with the market?

Get estimated prices using your postcode and meter details, then choose the exact regional tariff option that matches your home.

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Updated on 12 Sep 2026