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So Jellyfish 18m 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 18m 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 18m 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 18m 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 18m

So Jellyfish 18m 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 18m is closed to new customers: a fixed tariff for 18 months, exit fee £95 per fuel. Against the Ofgem cap for 1 October to 31 December 2026 its electricity unit rate is above the cap in every region (by 0.38 to 1.81p/kWh) and its standing charge is below the cap in every region (by 5.60 to 10.56p a day). In London the unit rate is 27.84p against a 26.60p cap and the standing charge 32.40p 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 £1,696 a year on this tariff against £1,706 at the cap (−£11), 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 £95.00 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 18m 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 18m 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 18m 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 18m: 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 26.328p/kWh under the Dual Fuel / Monthly Direct Debit / standard-rate option group. Rates range up to 28.240p/kWh across regions for this group. A postcode-level quote is needed to estimate your annual cost.

So Jellyfish 18m 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 26.328 – 28.240 18 months £95.00 View regional prices
Dual Fuel Monthly Direct Debit Yes 14 29.757 – 34.691 18 months £95.00 View regional prices
Electricity Monthly Direct Debit No 14 26.328 – 28.240 18 months £95.00 View regional prices
Electricity Monthly Direct Debit Yes 14 29.757 – 34.691 18 months £95.00 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 18m against the Ofgem price cap, 1 October to 31 December 2026

So Jellyfish 18m is closed to new customers: a fixed tariff for 18 months, exit fee £95 per fuel. Against the Ofgem cap for 1 October to 31 December 2026 its electricity unit rate is above the cap in every region (by 0.38 to 1.81p/kWh) and its standing charge is below the cap in every region (by 5.60 to 10.56p a day). In London the unit rate is 27.84p against a 26.60p cap and the standing charge 32.40p 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 £1,696 a year on this tariff against £1,706 at the cap (−£11), 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 cap2526272829303540455055606570YorkshireYorkshire: 26.33p/kWh vs cap 25.60p (+0.73p)+0.73pYorkshire: standing charge 51.59p/day vs cap 61.67p (−10.08p/day, −£37 a year)−10.08pSouth ScotlandSouth Scotland: 26.50p/kWh vs cap 26.11p (+0.39p)+0.39pSouth Scotland: standing charge 52.61p/day vs cap 61.41p (−8.80p/day, −£32 a year)−8.80pEast MidlandsEast Midlands: 26.79p/kWh vs cap 25.36p (+1.43p)+1.43pEast Midlands: standing charge 43.52p/day vs cap 51.45p (−7.93p/day, −£29 a year)−7.93pNorth EastNorth East: 26.91p/kWh vs cap 25.46p (+1.45p)+1.45pNorth East: standing charge 53.26p/day vs cap 61.58p (−8.32p/day, −£30 a year)−8.32pWest MidlandsWest Midlands: 27.02p/kWh vs cap 25.60p (+1.42p)+1.42pWest Midlands: standing charge 48.33p/day vs cap 57.23p (−8.90p/day, −£32 a year)−8.90pEasternEastern: 27.51p/kWh vs cap 26.61p (+0.90p)+0.90pEastern: standing charge 43.36p/day vs cap 51.84p (−8.48p/day, −£31 a year)−8.48pSouth EastSouth East: 27.65p/kWh vs cap 26.88p (+0.77p)+0.77pSouth East: standing charge 44.99p/day vs cap 52.32p (−7.33p/day, −£27 a year)−7.33pSouthernSouthern: 27.83p/kWh vs cap 26.47p (+1.36p)+1.36pSouthern: standing charge 41.61p/day vs cap 47.81p (−6.20p/day, −£23 a year)−6.20pSouth WalesSouth Wales: 27.84p/kWh vs cap 26.55p (+1.29p)+1.29pSouth Wales: standing charge 47.35p/day vs cap 55.41p (−8.06p/day, −£29 a year)−8.06pLondonLondon: 27.84p/kWh vs cap 26.60p (+1.24p)+1.24pLondon: standing charge 32.40p/day vs cap 42.92p (−10.52p/day, −£38 a year)−10.52pNorth WestNorth West: 27.89p/kWh vs cap 26.49p (+1.40p)+1.40pNorth West: standing charge 40.08p/day vs cap 45.68p (−5.60p/day, −£20 a year)−5.60pSouth WestSouth West: 27.97p/kWh vs cap 26.58p (+1.39p)+1.39pSouth West: standing charge 48.62p/day vs cap 55.58p (−6.96p/day, −£25 a year)−6.96pNorth ScotlandNorth Scotland: 28.16p/kWh vs cap 26.35p (+1.81p)+1.81pNorth Scotland: standing charge 47.23p/day vs cap 55.14p (−7.91p/day, −£29 a year)−7.91pMerseyside & N WalesMerseyside & N Wales: 28.24p/kWh vs cap 27.86p (+0.38p)+0.38pMerseyside & N Wales: standing charge 57.10p/day vs cap 67.66p (−10.56p/day, −£39 a year)−10.56p
RegionElec p/kWhCap p/kWhStanding p/dayCap p/dayStanding £/monthGas p/kWhGas capGas standing p/day£/yr typicalCap £/yrvs cap
Yorkshire26.3325.6051.5961.6715.697.957.9024.451,6911,724−£33
Southern Scotland26.5026.1152.6161.4116.008.077.8724.451,7101,734−£23
East Midlands26.7925.3643.5251.4513.248.057.8224.451,6821,672+£10
North Eastern England26.9125.4653.2661.5816.207.867.9224.451,7031,722−£19
West Midlands27.0225.6048.3357.2314.708.117.9024.451,7121,708+£4
Eastern England27.5126.6143.3651.8413.198.087.9124.451,7031,713−£10
South Eastern England27.6526.8844.9952.3213.698.158.0524.451,7191,735−£16
Southern England27.8326.4741.6147.8112.668.348.1724.451,7291,719+£10
Southern Wales27.8426.5547.3555.4114.408.108.0924.451,7281,744−£16
London27.8426.6032.4042.929.858.348.1524.451,6961,706−£11
North Western England27.8926.4940.0845.6812.198.067.8624.451,6981,684+£14
South Western England27.9726.5848.6255.5814.798.098.1224.451,7341,746−£12
Northern Scotland28.1626.3547.2355.1414.378.027.8724.451,7281,717+£11
Merseyside and Northern Wales28.2427.8657.1067.6617.378.037.9124.451,7671,805−£38
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 18m on an Economy 7 meter

Economy 7 version in London: 33.53p/kWh by day and 15.94p/kWh in the seven off-peak hours, which are set by your meter and network operator, not by the tariff; standing charge 32.73p a day. It costs less than this tariff's single-rate version (27.84p/kWh, 32.40p a day) once at least 33% of your electricity is used off-peak, modelled at 2,500 kWh a year; at 50% off-peak the Economy 7 version is −£76 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 26.787 43.52 8.047 24.45 18 months £95.00 Switch to this tariff
Eastern England 27.506 43.36 8.081 24.45 18 months £95.00 Switch to this tariff
Merseyside & North Wales 28.240 57.10 8.034 24.45 18 months £95.00 Switch to this tariff
North East England 26.913 53.26 7.857 24.45 18 months £95.00 Switch to this tariff
North Scotland 28.160 47.23 8.021 24.45 18 months £95.00 Switch to this tariff
North West England 27.886 40.08 8.057 24.45 18 months £95.00 Switch to this tariff
South East England 27.652 44.99 8.145 24.45 18 months £95.00 Switch to this tariff
South East England 27.840 32.40 8.338 24.45 18 months £95.00 Switch to this tariff
South England 27.829 41.61 8.339 24.45 18 months £95.00 Switch to this tariff
South Scotland 26.499 52.61 8.071 24.45 18 months £95.00 Switch to this tariff
South Wales 27.835 47.35 8.102 24.45 18 months £95.00 Switch to this tariff
South West England 27.971 48.62 8.087 24.45 18 months £95.00 Switch to this tariff
West Midlands 27.021 48.33 8.110 24.45 18 months £95.00 Switch to this tariff
Yorkshire 26.328 51.59 7.953 24.45 18 months £95.00 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 34.331 13.998 43.85 8.047 24.45 18 months £95.00 Switch to this tariff
Eastern England 34.007 15.239 43.70 8.081 24.45 18 months £95.00 Switch to this tariff
Merseyside & North Wales 33.173 16.996 57.43 8.034 24.45 18 months £95.00 Switch to this tariff
North East England 30.432 17.689 53.60 7.857 24.45 18 months £95.00 Switch to this tariff
North Scotland 32.028 17.496 47.56 8.021 24.45 18 months £95.00 Switch to this tariff
North West England 31.271 17.825 40.41 8.057 24.45 18 months £95.00 Switch to this tariff
South East England 34.691 14.761 45.32 8.145 24.45 18 months £95.00 Switch to this tariff
South East England 33.534 15.937 32.73 8.338 24.45 18 months £95.00 Switch to this tariff
South England 32.131 17.073 41.94 8.339 24.45 18 months £95.00 Switch to this tariff
South Scotland 29.757 16.931 52.94 8.071 24.45 18 months £95.00 Switch to this tariff
South Wales 30.213 18.933 47.68 8.102 24.45 18 months £95.00 Switch to this tariff
South West England 32.525 16.954 48.95 8.087 24.45 18 months £95.00 Switch to this tariff
West Midlands 31.980 16.555 48.67 8.110 24.45 18 months £95.00 Switch to this tariff
Yorkshire 31.213 16.224 51.92 7.953 24.45 18 months £95.00 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 26.787 43.52 18 months £95.00 Switch to this tariff
Eastern England 27.506 43.36 18 months £95.00 Switch to this tariff
Merseyside & North Wales 28.240 57.10 18 months £95.00 Switch to this tariff
North East England 26.913 53.26 18 months £95.00 Switch to this tariff
North Scotland 28.160 47.23 18 months £95.00 Switch to this tariff
North West England 27.886 40.08 18 months £95.00 Switch to this tariff
South East England 27.652 44.99 18 months £95.00 Switch to this tariff
South East England 27.840 32.40 18 months £95.00 Switch to this tariff
South England 27.829 41.61 18 months £95.00 Switch to this tariff
South Scotland 26.499 52.61 18 months £95.00 Switch to this tariff
South Wales 27.835 47.35 18 months £95.00 Switch to this tariff
South West England 27.971 48.62 18 months £95.00 Switch to this tariff
West Midlands 27.021 48.33 18 months £95.00 Switch to this tariff
Yorkshire 26.328 51.59 18 months £95.00 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 34.331 13.998 43.85 18 months £95.00 Switch to this tariff
Eastern England 34.007 15.239 43.70 18 months £95.00 Switch to this tariff
Merseyside & North Wales 33.173 16.996 57.43 18 months £95.00 Switch to this tariff
North East England 30.432 17.689 53.60 18 months £95.00 Switch to this tariff
North Scotland 32.028 17.496 47.56 18 months £95.00 Switch to this tariff
North West England 31.271 17.825 40.41 18 months £95.00 Switch to this tariff
South East England 34.691 14.761 45.32 18 months £95.00 Switch to this tariff
South East England 33.534 15.937 32.73 18 months £95.00 Switch to this tariff
South England 32.131 17.073 41.94 18 months £95.00 Switch to this tariff
South Scotland 29.757 16.931 52.94 18 months £95.00 Switch to this tariff
South Wales 30.213 18.933 47.68 18 months £95.00 Switch to this tariff
South West England 32.525 16.954 48.95 18 months £95.00 Switch to this tariff
West Midlands 31.980 16.555 48.67 18 months £95.00 Switch to this tariff
Yorkshire 31.213 16.224 51.92 18 months £95.00 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 £95.00 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 18m: 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 18m 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 18m 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 18m 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 18m
Regions shown
13
Page type
Canonical tariff family page

How we assess So Jellyfish 18m

  • 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 18m 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