Scottish Power: Business Energy Supplier Review

• Businesses that prioritise customer service quality above other factors. Which?'s 2026 survey placed Scottish Power last of the 17 suppliers it assessed, with an overall score of 56%, the lowest in the table, and specifically flagged weak complaints handling. Citizens Advice's January to March 2026 data ranked it 10th of the suppliers it tracks, with a low score for complaint volumes specifically (1.5 out of 5).

• Cost-sensitive small businesses that want a published price ceiling. Unlike British Gas, which publishes an Ofgem-mandated maximum price table for microbusinesses, Scottish Power doesn't publish an equivalent standard rate card, so there's no public benchmark to compare a quote against beyond its Standard Variable and Deemed rate sheets. See our British Gas review if a published reference price matters to you.

• Businesses that want a fully fixed all-in tariff. Scottish Power's For Business and Renewable for Business products fix the energy-cost element but review network, social and environmental charges quarterly, so your total unit cost can still move during the contract term. That's a meaningfully different structure from a supplier offering a all-in fixed rate.

• Businesses that want the best-reviewed supplier. Octopus Energy and E.ON Next both score more strongly across Citizens Advice and Which? measures. Our Octopus review and Octopus vs E.ON Next comparison cover how those two stack up against each other.

• Businesses comparing Scottish Power against E.ON Next. Our E.ON Next vs Scottish Power comparison looks at that trade-off directly, including how each structures its variable charges.

Scottish Power Suitability by Business Type

The Business Tariffs Scottish Power Offers

Scottish Power quotes business energy against your site's postcode, meter type and usage rather than publishing one universal price list, which is standard practice across large suppliers. As of 2026, the main products are:

For Business. The standard fixed-term tariff, available across 1, 2 or 3-year contracts. It combines a fixed energy-cost element, protecting you from wholesale price rises for the term, with a variable element covering network, social and environmental costs, reviewed quarterly.

Renewable for Business. Scottish Power's named green tariff for SMEs, offering electricity backed by REGOs from its own UK wind generation rather than certificates bought elsewhere. It follows the same fixed-plus-variable structure as For Business.

Standard Variable. The default tariff you land on if a fixed contract ends, and you don't renew. Rates move with the market, and there's no exit fee, so you can switch away at any time.

Deemed. The default tariff for a business that moves into premises Scottish Power already supplies without arranging its own contract. Scottish Power says Deemed and Standard Variable rates are likely to cost more than its fixed-term contracts.

EV charging for business fleets. Charging hardware from 3kW to 50kW-plus, with a 3-year warranty, aimed at businesses electrifying company vehicles.

Energy Efficiency Toolkit. Co-developed with the Carbon Trust, this gives business customers practical guidance on cutting consumption rather than just supplying energy.

Half Price Weekends. A domestic scheme rewarding smart meter customers with discounted weekend electricity. It's worth checking directly with Scottish Power whether an equivalent exists for your specific business tariff, since the scheme as marketed is aimed at household customers.

Business Contract Terms With Scottish Power

Scottish Power's fixed-term business contracts run 1, 2 or 3 years. The energy-cost element is locked for the full term, but the variable element, covering network, social and environmental charges, is reviewed quarterly, with any changes taking effect on 1 January, 1 April, 1 July or 1 October.

As with all UK business energy contracts, there's no statutory cooling-off period. Once you've signed, you're generally committed for the contract length, so it's worth reading terms carefully before you do.

If your business is a microbusiness (broadly, fewer than 10 employees and turnover or balance sheet under €2 million, or usage under 100,000 kWh electricity or 293,000 kWh gas a year), Scottish Power is required to send a renewal letter roughly 60 to 90 days before your contract ends, outlining rollover rates and the out-of-contract rates on offer. If your contract lapses without action, you move onto Standard Variable rather than losing supply, and if you take on premises Scottish Power already supplies without a contract in place, you default onto Deemed rates instead.

Scottish Power Business Prices

This is one area where Scottish Power's approach differs meaningfully from some of its rivals. British Gas, for instance, publishes an Ofgem-mandated maximum price table showing the most a microbusiness will pay on a new or renewed fixed contract. Scottish Power doesn't publish an equivalent standard rate card for its fixed business tariffs, so there's no public ceiling figure to check a quote against in the same way.

What Scottish Power does publish is a set of Standard Variable and Deemed rate sheets, linked from its business terms and conditions page. As of the most recent schedule we could locate, dated effective 1 January 2025, published regional electricity rates on Direct Debit ran from roughly 27.72p/kWh to 30.11p/kWh, with standing charges from around 109.78p to 176.70p per day, depending on region. Because that schedule carries a January 2025 effective date, treat it as a reference point rather than a confirmed current price, and check the live rate directly before relying on it.

Outside of that published fallback, live quotes on Scottish Power's fixed contracts will typically undercut Standard Variable and Deemed rates by a meaningful margin. Based on broader UK business energy market data for 2026, typical negotiated fixed rates across the market run roughly 22 to 30p/kWh for electricity and 6.5 to 9p/kWh for gas, though your actual quote depends heavily on postcode, usage band, meter type and contract length.

Use our free business energy calculator to work out your usage before requesting quotes, and treat any published figure, including the ranges above, as a starting point rather than a guarantee.

We couldn't confirm a published deposit or advance payment policy for new Scottish Power business customers in the way some suppliers set out clearly. If a deposit applies to your application, it's worth asking directly and getting it confirmed in writing before you sign.

How Scottish Power Backs Up Sustainability Claims

Scottish Power's renewable story is more directly tied to physical generation than most large suppliers'. It says its Renewable for Business electricity has been backed by REGOs from its own UK wind generation since 10 March 2026, and it was the first Big Six supplier to move its domestic electricity to a fully renewable footing, back in 2018. According to Scottish Power's own figures, it operates 38 onshore wind farm sites hosting 1,157 turbines, with a combined generating capacity of around 1,948MW, alongside offshore projects including the East Anglia hub currently under construction.

It's worth reading this alongside the same context that applies to every large supplier's green claims: a REGO certificate confirms that renewable generation equivalent to your usage exists somewhere on the grid over the course of a year, not that the specific electricity reaching your meter came directly from a Scottish Power turbine. What sets Scottish Power apart from suppliers relying purely on bought-in certificates is that it owns the generation assets those certificates are drawn from, through long-term power purchase agreements between its Retail and Renewables businesses.

It's also worth checking that claim against Scottish Power's supplier-wide fuel mix disclosure, which tells a noticeably different story, and this is exactly the kind of gap that's worth understanding before you take a green tariff claim at face value.

Fuel Mix With Scottish Power

According to Citizens Advice's most recent published data (January to March 2026), Scottish Power's overall fuel mix across its full customer book is:

At first glance, that sits awkwardly next to Scottish Power's marketing around wind power. The explanation is a quirk of how fuel mix disclosure works across the industry: when a supplier sells renewable certificates to specific green-tariff customers, the renewable share attached to those certificates is allocated to those customers' fuel mix, not spread across the whole customer base. That leaves the supplier's overall book looking heavily weighted towards fossil fuel and nuclear, even where, as with Scottish Power, a large share of actual generation comes from wind.

The honest takeaway is that this table describes Scottish Power's average customer, not a Renewable for Business customer specifically. If green credentials matter to your business, the relevant figure is the fuel mix attached to your actual tariff, and it's worth asking Scottish Power to confirm that in writing rather than relying on the whole-company average or the marketing headline alone.

What Real Businesses Say About Scottish Power

Scottish Power's service reputation is mixed, and it's worth setting expectations against more than one data source.

Trustpilot. Scottish Power's main UK profile sits at around 4.3 to 4.4 out of 5 from roughly 190,000 to 200,000 reviews as of August 2026, with around 60% five-star and around 19 to 20% one-star. That's a high review volume reflecting the size of Scottish Power's customer base, and Scottish Power actively invites reviews, which tends to lift the average compared with profiles built purely from unprompted feedback.

Citizens Advice. For January to March 2026, Scottish Power scored 2.94 out of 5 overall, ranking 10th of the suppliers Citizens Advice assessed. The breakdown: 1.5 out of 5 for fewer complaints received (61.8 complaints per 10,000 customers), 4.0 out of 5 for contact waiting time (average call wait of 1 minute 16 seconds, 94.3% of emails answered within two days), 2.8 out of 5 for billing and metering, and a full 5 out of 5 for customer commitments, reflecting membership of the Energy Switch Guarantee and Vulnerability Commitment schemes.

Scottish Power's own communications have highlighted its contact-time performance specifically, and in several recent quarters it has topped the "large supplier" category for ease of contact, a narrower comparison than the full supplier table Citizens Advice publishes, which includes many smaller suppliers with lower complaint volumes by nature of their size.

Which? Scottish Power is not currently a Which? Recommended Provider. Its January 2026 survey, based on almost 12,000 customers surveyed in September to October 2025 alongside a behind-the-scenes assessment of supplier practices, gave Scottish Power an overall score of 56%, the lowest of the 17 suppliers assessed and behind British Gas (59%) and EDF (58%). Which? specifically flagged Scottish Power's handling of complaints as the weakest area. A Scottish Power spokesperson responded that Citizens Advice's scorecard uses what it called a more transparent methodology.

Reddit and wider sentiment. As with most business energy suppliers, dedicated discussion is thin compared with domestic commentary; most business owners simply don't post about their energy supplier the way they might about a bank. Where Scottish Power does come up, the pattern broadly echoes the formal data: praise for straightforward phone contact and quick resolution when things go smoothly, set against frustration over billing disputes and account transfer issues when they don't.

The honest summary: Scottish Power's contact-time performance is competitive, and its renewable-generation story is stronger than most rivals'. But on the two most comprehensive independent measures available, Which? and the overall Citizens Advice table, it sits below most of its Big Six peers rather than above them, and it isn't recognised as a top performer by either body as of early 2026. That's a meaningfully different picture from a supplier that scores consistently well across every source, and it's worth weighing against the strength of Scottish Power's renewable credentials and Iberdrola's financial backing.

Smart Meters, Apps and Technology

Scottish Power installs smart meters for business customers free of charge, and offers account management through its app on iOS and Android, covering meter readings, billing and tariff renewals. As part of the industry-wide Market-wide Half-Hourly Settlement (MHHS) programme, all suppliers, Scottish Power included, must complete the move to half-hourly settlement by May 2027.

Beyond metering, Scottish Power's wider business toolkit includes:

• EV charging solutions for fleets, spanning 3kW to 50kW-plus chargers with a 3-year warranty, a more developed offer than several competitors provide directly.

• An Energy Efficiency Toolkit, co-developed with the Carbon Trust, giving business customers third-party-backed guidance on cutting usage.

• Online and app-based account management, covering billing, usage tracking and renewals.

• A commercial energy portal for larger businesses, with multi-site management for organisations running more than one location.

Scottish Power for Business: Trade-Offs

Switching to Scottish Power, Step by Step

1. Get a quote. You'll need your business address and postcode, estimated annual consumption from a recent bill, and ideally your MPAN (electricity) or MPRN (gas) reference.

2. Choose your tariff and contract length. Scottish Power will quote a unit rate, standing charge and contract term for your usage, across 1, 2 or 3-year fixed contracts, or Standard Variable if you'd rather not commit.

3. Scottish Power handles the switch, including contacting your current supplier on your behalf.

4. A credit check is likely to be carried out on the business. It's worth asking directly whether a deposit applies to your specific application, since we couldn't confirm a standard published policy.

5. The switch completes, typically once your account is up to date and you're not tied into an existing contract elsewhere.

6. Provide a meter reading to ensure accurate opening billing.

7. Ongoing billing runs through your chosen payment method, with online and app-based account management available throughout.

Exit Fees and Ending Your Contract Early

There's no statutory cooling-off period on business energy contracts. Domestic energy customers get 14 days to change their mind; business customers, Scottish Power's included, generally don't. Read contract terms carefully before you sign.

Reports on business exit fees are mixed. Some third-party comparison sites describe Scottish Power's business contracts as carrying an exit fee if you leave before the end of the term, in line with the £50-per-fuel figure used on several of its domestic fixed tariffs. Others describe Scottish Power as not charging exit fees on business contracts at all. Scottish Power doesn't appear to publish a single flat figure for business contracts the way it does for some domestic tariffs, so the safest approach is to check the exit fee clause in your own contract terms rather than relying on a published number.

Standard Variable and Deemed tariffs carry no exit fees, so you can move to a new supplier from either at any time.

If you're moving premises, notify Scottish Power as early as possible. If no new agreement is in place at your new address, your account may default onto Deemed rates rather than a fixed contract.

Leaving Scottish Power to Switch Suppliers

Leaving Scottish Power works the same way as leaving any UK business energy supplier:

1. Get quotes from other suppliers before your current contract ends, ideally starting the comparison around 90 days out.

2. Check your exit fee position against your specific contract terms, since Scottish Power doesn't publish a flat figure for business contracts.

3. Confirm the switch with your new supplier, who will typically handle notifying Scottish Power on your behalf, or send a termination notice directly to contactus@scottishpower.com if you're managing the switch yourself.

4. Give a final meter reading on your last day of supply for an accurate closing bill.

5. Settle any outstanding balance to avoid delays in finalising your account.

Why Compare Before You Commit?

Scottish Power's renewable-generation story and Iberdrola's financial backing are strengths, but its independent service scores currently sit below several of its Big Six rivals, and it doesn't publish a maximum price benchmark the way British Gas does. Rates depend on your postcode, usage band, meter type and contract length, all of which shift the answer from one business to the next, and a strong generation story isn't the same as being the best-reviewed or the cheapest option for your specific site.

That's exactly what comparing properly solves. Tell us your postcode, estimated usage and current contract end date, and we'll compare live quotes across our panel of suppliers, Scottish Power included, rather than asking you to chase individual quotes yourself. Start with our free business energy calculator if you're not sure of your usage, or go straight to comparing business energy suppliers if you already have a recent bill to hand.

Scottish Power Business FAQs

Is Scottish Power good for business energy?

Yes. But it does depend on what you're optimising for. It's a strong choice if you want renewable electricity tied directly to a supplier's own UK wind generation and the financial backing of a large parent group. If customer service quality is your priority, independent data from Which? and Citizens Advice both place it below most of its Big Six rivals as of early 2026.

Is Scottish Power part of the Big Six?

Yes. It's one of only two suppliers, alongside British Gas, that has held its position in the Big Six continuously since the term was coined. The current 2026 line-up is Octopus Energy, British Gas, E.ON Next, OVO Energy, EDF Energy and Scottish Power.

How do I get a business energy quote from Scottish Power?

You can request a quote directly through Scottish Power's business website using your postcode and estimated annual consumption, or compare it alongside other suppliers using BusinessComparison to see how it stacks up before you commit.

Does Scottish Power charge exit fees for business customers?

Yes, but it depends. Scottish Power doesn't publish one standard figure for business contracts. Check the exit fee clause in your specific contract terms directly rather than assuming a flat rate applies. Standard Variable and Deemed tariffs carry no exit fees.

Is there a cooling-off period on Scottish Power business contracts?

No. Business energy contracts, unlike domestic ones, don't come with a statutory cooling-off period, so it's important to check terms carefully before signing.

What happens if I don't renew my Scottish Power business contract?

You're moved onto Standard Variable rather than losing supply. If you take on premises already supplied by Scottish Power without arranging a new agreement, you default onto Deemed rates instead, which are rarely the cheapest option available.

Is Scottish Power's business electricity really 100% renewable?

Its Renewable for Business tariff is backed by REGO certificates tied to Scottish Power's own UK wind generation, which is a more direct link than certificates bought from third parties. But the company's overall fuel mix, covering its whole customer book rather than this specific tariff, shows a majority fossil fuel and nuclear split, since renewable certificates are allocated specifically to green-tariff customers rather than spread across the full customer base.

Does Scottish Power supply business gas?

Yes, through its For Business tariff, on the same 1, 2 or 3-year fixed contract lengths as electricity.

Our Verdict: Should You Switch?

Best for: businesses that want renewable electricity backed by a supplier's own UK wind generation rather than bought-in certificates, the financial reassurance of Iberdrola's backing, and a developed EV charging offer for company fleets.

Think twice if: customer service quality ranks high on your priority list. Which?'s 2026 survey placed Scottish Power last of the 17 suppliers assessed, and Citizens Advice's most recent quarterly data ranked it 10th overall.

Scottish Power's direct ownership of UK wind generation is a point of difference from suppliers that rely purely on certificates, and that's backed by scale: 38 onshore wind farm sites and a growing offshore pipeline through the Iberdrola group. But the independent service data currently tells a more mixed story than the renewable pitch suggests, and Scottish Power itself disputes how much weight some of that data should carry. For the typical BusinessComparison reader, it's worth including Scottish Power in your comparison for its renewable credentials specifically, while checking the current service data against your own priorities before you commit.

The right move is the same one we'd recommend before signing with any supplier: compare your actual quote against the rest of the market, weigh the service data against what matters most to your business, and don't let a strong sustainability story substitute for checking the numbers and the reviews.