British Gas vs Scottish Power: Business Energy Comparison

This business energy comparison looks at tariffs, contract length, pricing structure, renewable credentials, customer service, smart tech and fees, so you can weigh British Gas against Scottish Power for your company's energy supply.

British Gas vs Scottish Power at a Glance

Which Supplier Offers Better Business Energy Tariffs?

Neither British Gas nor Scottish Power publishes a single standard business rate, because pricing depends on:

• Business location

• Annual consumption

• Industry type

• Meter type

• Contract length

• Credit profile

• Regional distribution charges

It's worth noting that the two suppliers structure their ranges quite differently. British Gas covers the full spread from its online-only Lite brand through to Flex Advantage for organisations using more than 1GWh a year. Scottish Power's range is narrower by design: since exiting the industrial and commercial market in 2022, it no longer competes for large-usage accounts, and its two core business tariffs both combine a fixed energy-cost element with a variable element for network and environmental charges that it reviews quarterly.

British Gas Tariffs

Fixed Price Energy Plan

The standard product, locking in your unit rate and standing charge for one to four years. Zero Carbon electricity is included as standard, backed by Renewable Energy Guarantees of Origin (REGOs) and nuclear declarations for the contract term.

Best for:

• Budget certainty over a fixed term

• SMEs that want a single, predictable quote

• Businesses that would rather not manage a market-linked price

British Gas Lite

A separate, digital-first brand for small businesses spending under £30,000 a year on energy. It includes a smart meter, monthly Direct Debit billing and account management entirely online, with support through webchat rather than a phone line.

Best for:

• Digitally confident owners who want the cheapest fixed option

• Small offices and shops with straightforward usage

Renewable Business Energy

An upgrade for businesses wanting 100% renewable electricity, backed by Natural Renewable Electricity REGOs from UK solar, wind and hydro sources. Generally pitched at higher-usage customers using 150,000 kWh or more a year.

Flex Advantage

A flexible energy supply contract for businesses using more than 1GWh a year, giving access to an online purchasing portal for managing commodity risk and buying energy in tranches as the wholesale market moves.

Commercial Landlord Energy

Fixed and flexible contract options tailored for commercial landlords managing void periods and tenant transitions, backed by British Gas's nationwide engineering network for connections and meter work.

Scottish Power Tariffs

For Business

Scottish Power's standard fixed-term tariff, available across one, two or three-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 on 1 January, 1 April, 1 July and 1 October.

Best for:

• SMEs comfortable with a partly variable cost structure

• Businesses that want Iberdrola's financial backing behind their supplier

Renewable for Business

Scottish Power's named green tariff for SMEs, backed by REGOs from its own UK wind generation rather than certificates bought elsewhere, and included as standard with no minimum usage threshold. It follows the same fixed-plus-variable structure as For Business.

Best for:

• Businesses that want supplier-generated renewable electricity, not just a certificate

• Sustainability-focused SMEs under 150,000 kWh a year, where British Gas's equivalent upgrade doesn't apply

Standard Variable

The default tariff when a fixed contract ends without a renewal. Rates move with the market, but 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 typically cost more than its fixed-term contracts.

Tariff Comparison Table

Winner: British Gas, for businesses that want the broadest choice of tariff structures across business sizes and a published price ceiling to check a quote against. Scottish Power is the stronger option for SMEs that want renewable electricity tied to a supplier's own UK wind generation included as standard, without needing to hit a usage threshold first. However, it's no longer a contender for businesses using more than around 1GWh a year.

How Do Contract Lengths Compare?

British Gas Contract Terms

Scottish Power Contract Terms

Contract Length Scorecard

British Gas vs Scottish Power Pricing Structure

Business energy quotes typically include:

Unit Rate

Price charged for each kWh consumed. British Gas's published maximum microbusiness rates, effective 27 May 2026, were 38.41p per kWh for electricity and 12.54p per kWh for gas on a one-year fixed contract, excluding VAT and the Climate Change Levy. However, most businesses negotiate below these ceiling prices. Scottish Power doesn't publish an equivalent standard rate card for its fixed business tariffs. The most recent Standard Variable and Deemed rate sheet we could locate on its site carried a 1 January 2025 effective date, with regional electricity rates on Direct Debit running from roughly 27.72p to 30.11p per kWh, so treat that figure as a stale reference point rather than a current price.

Standing Charge

Daily fee covering infrastructure and administration. British Gas's published one-year microbusiness maximum examples run to around £3.34 a day for electricity and £17.10 a day for gas. Scottish Power's out-of-contract rate sheet showed standing charges from around 109.78p to 176.70p a day depending on region, again dated to January 2025.

Pass-Through Charges

May include:

• Network costs, as explained in our guide to pass-through and fully fixed energy contracts

• Balancing charges

• Government levies

Capacity Charges

Applicable to some larger business connections with British Gas. Scottish Power's exit from the industrial and commercial market in 2022 means this is less relevant to its current business book.

Pricing Transparency Comparison

Winner: British Gas, on transparency specifically. It's the only one of the two that publishes a maximum price a microbusiness will pay, giving you a public ceiling to check a live quote against. Scottish Power's live quotes may well undercut British Gas's, since its fixed contracts aren't capped by the same regulatory disclosure, but there's no public benchmark either way.

Which Supplier Has Better Renewable Energy Credentials?

Sustainability is becoming increasingly valuable to UK businesses, and this is where the two suppliers tell different stories.

British Gas Sustainability Initiatives

Offers:

• Zero Carbon electricity as standard on all new and renewed fixed contracts, a blend British Gas describes as roughly 72% renewables and 28% nuclear generation, backed by REGOs and nuclear declarations

• A 100% Natural Renewable Electricity upgrade, backed by REGOs from UK solar, wind and hydro sources, generally pitched at businesses using 150,000 kWh or more a year

• Renewable Gas and Carbon Neutral Gas options, backed by Renewable Gas Guarantees of Origin (RGGOs) from the Green Gas Certification Scheme

• Carbon offsetting projects and group-level investment in low-carbon generation through Centrica

Pros

• Zero Carbon electricity included as standard, at no extra cost

• Dedicated renewable gas products backed by verified certificates

• Covers gas as well as electricity with distinct renewable products

Cons

• The 100% renewable electricity upgrade is only available above the 150,000 kWh threshold

• British Gas's own fuel mix figures vary depending on which disclosure you read: Citizens Advice's October to December 2025 data shows 57% nuclear and 20% renewable across the whole customer book; its own annual disclosure shows a different split again, and neither matches the 72/28 figure used in its Zero Carbon marketing

Scottish Power Sustainability Initiatives

Offers:

• Renewable for Business electricity, 100% REGO-backed by Scottish Power's own UK wind generation since 10 March 2026, included as standard with no minimum usage threshold

• Direct ownership of the generation behind its green tariff: 38 onshore wind farm sites hosting 1,157 turbines with a combined capacity of around 1,948MW, plus offshore projects including the East Anglia hub

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

Pros

• Renewable electricity generated from Scottish Power's own assets, not solely bought-in certificates

• Included as standard on every SME contract, regardless of usage threshold

• Third-party validation of its efficiency advice through the Carbon Trust partnership

Cons

• Scottish Power's overall fuel mix, covering its whole customer book, is heavily weighted towards fossil fuel: Citizens Advice's January to March 2026 data shows 84% fossil fuel, 4% nuclear, 7% renewable and 5% other, a result of how REGO certificates are allocated specifically to green-tariff customers rather than spread across the whole book

• Less detail publicly available on gas-specific renewable options compared with British Gas

Sustainability Comparison

Winner: Scottish Power. Its Renewable for Business tariff is tied more directly to physical UK generation than British Gas's standard offer, and it's available to SMEs with no usage threshold. But Scottish Power's whole-company fuel mix is more fossil-heavy than British Gas's on the most recent Citizens Advice data, a reminder that a green tariff's certificate backing doesn't automatically describe the supplier's overall profile.

Customer Service Comparison

Customer support can have a major impact on small businesses when problems arise, and this is an area where neither supplier currently stands out.

British Gas Business Support

Channels include:

• A dedicated business customer service team and account management for larger customers

• Energy360 DataView for online account and half-hourly usage management

• A nationwide engineering network for connections, meter upgrades and physical works

Strengths

• Large-scale, established support infrastructure with national coverage

• Trustpilot rating of 4.4 out of 5 from over 350,000 reviews as of late July 2026, though this combines domestic and business reviews rather than separating them

Weaknesses

• Ranked 14th of 16 suppliers by Citizens Advice for October to December 2025, scoring 2.28 out of 5 overall, with particularly weak scores for complaint volumes and billing accuracy

• Not a Which? Recommended Provider; its 2026 survey gave it 59%, third from the bottom of the suppliers assessed

• British Gas Lite, its separate small-business digital brand, has its own Trustpilot profile rated "Bad" at 1.1 out of 5 from around 4,000 reviews

Scottish Power Business Support

Channels include:

• Online and app-based account management, covering meter readings, billing and renewals

• A commercial energy portal for larger businesses managing multiple sites

• Telephone and online support for SME accounts

Strengths

• Trustpilot rating of around 4.3 to 4.4 out of 5 from roughly 190,000 to 200,000 reviews as of August 2026, though again this blends domestic and business reviews

• Citizens Advice ranked it 10th of assessed suppliers for January to March 2026, scoring 2.94 out of 5 overall, with a strong 4.0 out of 5 for contact waiting time

Weaknesses

• Which?'s 2026 survey placed Scottish Power last of the 17 suppliers assessed, with an overall score of 56%, specifically flagging weak complaints handling

• Citizens Advice's complaint-volume score sits at just 1.5 out of 5

Customer Service Scorecard

Both suppliers underperform against the wider market on independent service data, and the survey periods above don't align exactly (British Gas's Citizens Advice figure is from Q4 2025, Scottish Power's from Q1 2026), so treat the comparison as directional rather than a perfectly matched contest. On balance, British Gas edges ahead on the Which? survey specifically, while Scottish Power scores marginally better on its most recent Citizens Advice quarter. Neither is a standout, and it's worth weighing this section against how much customer service ranks against price and renewable credentials for your business.

How Do Smart Meters and Tech Compare?

British Gas Technology Solutions

• Free SMETS2 smart meter installation for microbusinesses; installation typically takes around an hour

• Energy360 DataView for half-hourly consumption insights on smart and half-hourly metered accounts

• PeakSave for Business, crediting half-price electricity during designated off-peak events to customers with a working smart meter

• A nationwide engineering network for new connections and meter upgrades

Ideal For

• Businesses wanting detailed half-hourly usage data at no extra cost

• Multi-site or complex-metering organisations needing physical engineering support

Scottish Power Technology Solutions

• Free smart meter installation for business customers

• App-based account management on iOS and Android, covering meter readings, billing and renewals

• EV charging solutions for fleets, spanning 3kW to 50kW-plus chargers with a 3-year warranty

• An Energy Efficiency Toolkit co-developed with the Carbon Trust

Ideal For

• Businesses electrifying a company vehicle fleet

• Businesses wanting third-party-backed efficiency guidance alongside their supply

Technology Comparison

Winner: It depends on what your business needs. British Gas has the edge for half-hourly data and demand-response tools through Energy360 DataView and PeakSave. Scottish Power has the clearer edge for any business running or planning an EV fleet, where its charging hardware range is more developed than British Gas's largely domestic-focused offer.

Business Energy Charges

Additional fees may apply with either supplier.

Common Charges

Key Consideration

Businesses should avoid rolling onto out-of-contract or deemed rates, which are typically far more expensive than a fixed contract, whichever supplier you choose. Neither British Gas nor Scottish Power publishes a single flat exit fee figure for business contracts, so it's worth checking your specific contract terms directly rather than relying on a published number from either supplier's marketing.

Pros and Cons of British Gas

Advantages

UK's Largest Business Energy Supplier
British Gas supplies more than 350,000 UK businesses, giving it significant scale, national infrastructure and engineering support.

Zero Carbon Electricity as Standard
All new and renewed fixed contracts include a Zero Carbon blend at no extra cost.

Broadest Range of Tariff Structures
From the online-only British Gas Lite through to Flex Advantage for large flexible-purchasing customers, British Gas covers the full range of business sizes, something Scottish Power no longer does.

Published Price Ceiling
The only one of the two suppliers to publish a maximum microbusiness price, giving you a public benchmark to check a quote against.

Disadvantages

Weak Independent Service Scores
Ranked 14th of 16 by Citizens Advice for the most recent quarter, and not a Which? Recommended Provider.

Exit Fees on Fixed Contracts
Leaving a fixed-rate deal early typically costs in the region of £60 to £150 per fuel.

Limited EV Charging Support
Its Hive EV charger is primarily a domestic product, and dedicated business fleet charging isn't a simple, developed offer the way it is with Scottish Power.

Pros and Cons of Scottish Power

Advantages

Renewable Electricity Tied to Its Own Generation, No Threshold
Every SME fixed contract includes 100% renewable electricity backed by Scottish Power's own UK wind generation, without needing to hit a minimum usage level.

Developed EV Charging Offer
Charging hardware from 3kW to 50kW-plus with a 3-year warranty, a stronger direct offer than British Gas provides to business customers.

Backed by Iberdrola
As part of one of the world's largest utility groups, Scottish Power carries a level of financial stability that smaller independents can't offer.

Carbon Trust Partnership
Its Energy Efficiency Toolkit gives business customers third-party-backed guidance, not just an in-house tool.

Disadvantages

No Longer Serves Large Businesses
Having exited the industrial and commercial market in 2022, Scottish Power isn't an option for businesses using significantly more than an SME level of energy.

Weakest Independent Service Scores in Its Class
Which?'s 2026 survey ranked Scottish Power last of the 17 suppliers it assessed, with a score of 56%.

No Published Price Benchmark
Unlike British Gas, Scottish Power doesn't publish a maximum microbusiness rate, so there's no public ceiling to check a quote against.

Which Supplier is Better for Which Business Types?

British Gas vs Scottish Power: Side-by-Side

Key Questions to Ask Before Deciding

Before signing a business energy contract, compare:

1. What is the standing charge, and how does it compare to a published benchmark?

2. What is the unit rate, and is it fixed or partly variable?

3. Does the supplier still serve businesses at your usage level?

4. Are there exit fees, and are they published or set per contract?

5. What happens at contract renewal?

6. Is the renewable tariff included as standard?

7. Can smart meters be installed, and what usage data do you get from them?

8. How are out-of-contract or deemed rates handled?

9. Is a dedicated account manager provided for your business size?

10. Does the supplier offer EV charging infrastructure?

British Gas vs Scottish Power FAQs

Is British Gas or Scottish Power cheaper for business energy?

Neither publishes a directly comparable standard rate, so there's no single answer. British Gas publishes a maximum microbusiness price you can check a quote against; Scottish Power doesn't. In our experience, the only reliable way to compare is to get live quotes from both based on your actual postcode, usage and contract length.

Can Scottish Power supply a large business?

Not in the way it once could. Scottish Power exited the industrial and commercial energy market in 2022 and now focuses on SME customers. If your business uses more than roughly 1GWh a year, British Gas's Flex Advantage is the more realistic fit of the two.

Is Scottish Power or British Gas better for renewables?

It depends on what you're looking for. Scottish Power's Renewable for Business tariff is backed by REGOs from its own UK wind generation and included as standard with no usage threshold. British Gas's standard Zero Carbon tariff is a 72% renewable/28% nuclear blend, with a 100% renewable upgrade available above 150,000 kWh a year.

Do British Gas and Scottish Power charge exit fees?

Both can, on fixed-term contracts for businesses, though neither publishes a single flat figure. Variable, rolling and Deemed tariffs from either supplier carry no exit fees. Check your specific contract terms rather than assuming a published rate applies.

Is there a cooling-off period with Scottish Power or British Gas?

No. Unlike domestic energy contracts, business contracts with British Gas or Scottish Power don't come with a statutory cooling-off period, so it's worth reading terms carefully before signing.

Does British Gas or Scottish Power have better service?

Neither scores well on the most recent independent data. British Gas ranked 14th of 16 suppliers on Citizens Advice's October to December 2025 data and scored 59% in Which?'s 2026 survey. Scottish Power ranked 10th on Citizens Advice's January to March 2026 data but was ranked last of 17 suppliers by Which? in 2026. It's worth weighing this against price and renewable credentials rather than treating either as a clear winner.

Does Scottish Power or British Gas offer EV charging?

Scottish Power has the more developed offer for SMEs, with charging hardware from 3kW to 50kW-plus and a 3-year warranty. British Gas's EV charging, through its Hive brand, is primarily aimed at domestic customers rather than business fleets.

Alternatives to British Gas and Scottish Power

• If you want to see how Scottish Power compares against another major supplier with a similar SME focus, our E.ON Next vs Scottish Power comparison looks at that trade-off directly.

• If British Gas against another established Big Six name is more useful, our British Gas vs SSE comparison covers that pairing.

• For the fullest picture of either supplier on its own, read our standalone British Gas business energy review and Scottish Power business energy review.

• If independent review scores matter most to you, our Octopus Energy review and Octopus vs E.ON Next comparison cover two suppliers that currently outperform both British Gas and Scottish Power.

Verdict: British Gas or Scottish Power for Business Energy?

Choose British Gas if you want:

• A published price ceiling to check your quote against

• The widest choice of tariffs across business sizes, including for usage above 1GWh a year

• Established engineering and account management support for larger or multi-site organisations

• Renewable gas options alongside electricity

Choose Scottish Power if you want:

• Renewable electricity from the supplier's own UK wind generation, included on every SME contract with no usage threshold

• A developed EV charging offer for a growing company fleet

• The financial backing of Iberdrola, one of the world's largest utility groups

• Third-party-backed energy efficiency guidance through the Carbon Trust partnership

For most small businesses, day-to-day supply quality differs little between suppliers, since all providers use the same national grid infrastructure. The clearer dividing line here is scale and renewable structure: British Gas is the only one of the two still built to serve a business at any size, while Scottish Power has narrowed its focus to SMEs and leans harder into its own-generation renewable story as the trade-off. Neither currently stands out on independent service data, so it's worth using our business energy comparison tool to check live quotes from both against other suppliers before you sign.