Best Business Energy Comparison Sites in the UK (2026 Guide)
I used to shrug at our energy renewal, sign whatever landed on my desk, and get back to work. Then I actually looked—properly—and realised we’d been quietly overpaying every single month.
That wake‑up call sent me down the rabbit hole of comparison tools, tariffs, and fine print. In 2026, the right site can cut serious costs—if you know where to look. Here’s a clear rundown of the ones that earn their keep
In 2026, the real game isn’t just who supplies your electricity or gas. It’s how you compare, who gets paid behind the scenes, and which sites are finally being regulated. Miss that, and even a “good deal” can quietly drain your cash.
What business owners get wrong about energy comparison in 2026
Here’s the uncomfortable truth: many business energy comparison sites don’t work the way owners assume they do.
Until recently, brokers and comparison platforms could add hidden commissions, limit which suppliers you see, or steer you towards longer contracts without clearly explaining why.
That’s why a major shift happened in late 2025: the UK government confirmed that energy brokers and comparison sites will fall under Ofgem regulation, with full oversight rolling into 2026. Transparency is no longer optional.
This guide isn’t just a list. It’s a filter. Below are the business energy comparison sites that still matter in 2026 — and what they’re actually good (and not so good) for.
Best business energy comparison sites UK (2026)
If finding a cheaper or fairer business energy contract is on your radar this year, start here.
- uSwitch for Business
uSwitch remains one of the most recognisable names in UK energy comparison, and in 2026 it still holds Ofgem Confidence Code accreditation.
The platform allows small and medium-sized businesses to compare business gas and electricity tariffs online for free. uSwitch earns commission from suppliers when a switch completes, which is why not every supplier always appears.
Best for: SMEs that want a quick, familiar comparison with minimal hand-holding.
- MoneySuperMarket Business Energy
MoneySuperMarket positions itself as independent, but like most platforms, it works with a panel of suppliers rather than the entire market.
You answer a small set of questions (postcode, annual usage, current supplier), and it returns estimated savings per tariff. Some suppliers are comparison-only, meaning you’ll see their prices but must contact them directly.
Best for: Businesses that want fast visibility of potential savings without committing immediately.
- Compare the Market (Business Energy)
Compare the Market doesn’t run business energy comparisons in-house. Instead, it partners with Bionic, a specialist commercial energy broker.
This matters. It means the experience is closer to a guided broker service than a pure self-serve comparison tool. Expect phone follow-ups and tailored contract recommendations.
Best for: Businesses that want expert help navigating fixed vs flexible contracts in a volatile market.
- GoCompare (Energylinx for Business)
GoCompare’s business energy offering runs through Energylinx, a dedicated commercial comparison platform also used by organisations like Citizens Advice.
Energylinx works with a broad panel of UK business energy suppliers and provides both price comparisons and switching support.
Best for: Owners who want a consumer-style interface with deeper commercial coverage.
- Simply Switch
Simply Switch focuses heavily on small businesses and sole traders. Backed by the Moneyexpert group, it offers guided switching and educational resources.
Its strength isn’t always the absolute cheapest tariff — it’s clarity. Quotes are personalised, and the switching process is deliberately slow enough to avoid mistakes.
Best for: First-time switchers and microbusinesses.
The top business energy suppliers in the UK (2026)
Comparison sites are tools. Suppliers are where the contract lives. Based on market share, customer reviews, and service stability in 2026, these names dominate.
- British Gas Business
British Gas remains the largest business energy supplier in the UK, serving over one million commercial customers.
Beyond gas and electricity, it offers boiler installation, maintenance contracts, and emergency repair services — valuable for multi-site operations.
- Octopus Energy for Business
Octopus has absorbed Bulb’s former customers and now stands as one of the most innovative suppliers in the UK.
In 2026, its business tariffs include smart time-of-use options like Shape Shifters, fixed contracts, and 100% renewable electricity as standard.
- EDF Business Energy
EDF supplies both SMEs and large enterprises, with particular strength in long-term fixed contracts and low-carbon generation backed by UK nuclear assets.
- ScottishPower Business
ScottishPower owns and operates more than 40 UK wind farms and focuses heavily on renewable-backed business tariffs.
- SSE Business Energy
SSE continues to serve medium and large businesses, with strong infrastructure ownership and renewable generation capacity across the UK.
The mistake that costs businesses the most
Most businesses compare once, switch, and disappear for three years.
The smarter ones diary a review date six months before contract end, re-run comparisons, and negotiate from a position of choice — not panic.
In 2026, energy comparison isn’t about chasing the cheapest unit rate. It’s about understanding who’s advising you, how they’re paid, and whether the deal still works when the market shifts.
Once you see that, energy stops being a bill — and starts becoming a controllable business cost again.
