SSE Deemed Rates

If your business is in Scotland, southern England, or parts of Wales, there’s a reasonable chance SSE is already the supplier at your premises. Not because you picked them. Because they inherited the property through decades of regional electricity board mergers. Scottish Hydro, Southern Electric, SWALEC — all of those brands eventually became part of SSE, and the commercial supply points came with them.

That history matters because it means SSE is the default supplier for thousands of commercial properties where the current occupant never made an active choice. You moved in, the energy was flowing, and SSE started billing you at their deemed rate. The first clue is usually the bill itself. The numbers look higher than they should, and the tariff name says something like “deemed” or “default variable.”

How Businesses End Up on SSE Deemed Rates

The most common route is moving into new premises where SSE was already the supplier. The previous tenant left, their account closed, and SSE kept the energy flowing. From the moment you started using it, you became their deemed customer. This is particularly common in areas where SSE has deep regional roots. A retail unit in Southampton or a workshop in Aberdeen is more likely to default to SSE than to most other suppliers.

Second is a change in business structure. If you went from sole trader to limited company, or changed the company name, SSE may have treated that as a new customer relationship. The old contract falls away, and the new entity gets placed on deemed terms until someone arranges a proper deal.

Third is a contract gap. Your fixed deal with SSE ended and a renewal didn’t land in time. Instead of rolling cleanly onto their standard out-of-contract rate, the supply moved to deemed pricing. The difference between the two is technical, but our deemed contracts guide explains why it matters for your bill.

In all three cases, nobody chose this. SSE didn’t ring to let you know. And the longer it goes unnoticed, the more it costs.

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What SSE Deemed Rates Cost

SSE publishes deemed rate cards on their website, updated regularly to reflect wholesale market changes. That transparency is helpful, but as with all suppliers, deemed rates are consistently much higher than negotiated fixed deals.

We’re not listing specific unit rates because they vary by region, meter type, and consumption profile, and they shift with each update. What stays true is that the gap between SSE’s deemed pricing and their fixed contract prices is significant on both the unit rate and the standing charge.

Pull out your latest SSE bill and look at the tariff name. If it says “deemed”, compare your unit rate per kWh and daily standing charge against fixed deals available on the market. That gap is what you’re paying for the privilege of not having signed a contract.

One thing that catches people out with SSE is the split between their domestic and commercial divisions. If you’ve got SSE at home, you might assume the same team handles your business account. They don’t. Different systems, different phone numbers, different teams entirely. If you call the domestic line about your business supply, they won’t be able to see your account. Make sure you’re contacting SSE’s business energy division when you want to check your tariff or discuss switching.

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How to Switch Off SSE Deemed Rates

Start with your meter numbers. For electricity, that’s the MPAN. For gas, the MPRN. Both should be on your SSE bill. If you can’t find them or the bill isn’t clear, our MPAN and MPRN lookup guide explains where to look.

Once you’ve got those, you can compare fixed deals from SSE or any other supplier. There’s no exit fee on deemed rates. No minimum term. No penalty for leaving. You’re free to move whenever you find something better.

SSE routes commercial and domestic customers through separate systems, so having your meter numbers and a recent bill ready before you call means you’ll reach the right team straight away. If your bills still show old branding like Scottish Hydro or Southern Electric, don’t worry. It’s the same company, same meters, same switching process.

The switch itself is administrative. No interruption to your supply. SSE sends a final bill based on a closing meter reading, and the new supplier picks up from there. Most switches complete within five to ten working days. If you’d rather compare quotes from several suppliers at once, you can compare business energy prices through a broker.

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Key Takeaways

✓ SSE is the incumbent supplier for many commercial properties in Scotland, southern England, and Wales due to regional electricity board heritage

✓ Businesses end up on SSE deemed rates after moving into premises, changing business structure, or letting a contract lapse

✓ Deemed rates are significantly more expensive than fixed deals, with both unit rates and standing charges inflated

✓ SSE’s domestic and commercial divisions are separate, so contact the business energy team directly

✓ You can switch at any time with no exit fees and no lock-in

✓ Find your MPAN and MPRN, compare what’s available, and the switch takes around five to ten working days

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