Knowledge centre
Business energy questions.
Plain English answers.
Renewal letter landed? Bill looking wrong? Not sure what a quote leaves out? Start with the question on your mind.
Understand the costs, compare the options and know what to ask before you agree a contract. These guides explain the market. They are not energy advice or a recommendation.
Find the answer you need
Browse the guides below.
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Energy brokers, comparison sites and introducers: how each one gets paid
Three ways to get help finding a business energy contract, how each is paid, and the questions to ask before you use any of them.
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Green business energy: what “green tariff” actually means, and the questions to ask
“Green” on a quote can mean different things. See what REGO certificates and fuel mix disclosure show, and the questions to ask a supplier.
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Half-hourly meters explained for business: what they are and why they matter
What half-hourly settlement means for a business electricity bill, how to tell if you are on it from your MPAN, and what the 2027 switchover means.
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How switching business energy supplier works, step by step
When you can switch, what you need, how long it takes and what can go wrong. A step-by-step guide based on Ofgem and Citizens Advice.
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VAT and Climate Change Levy on business energy: what you are charged and why
See how VAT and the Climate Change Levy show up on a business energy bill, the rates, who gets reduced rates and what you may be able to reclaim.
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Business energy standing charges explained: what you pay before you use a single unit
What a standing charge is, how it differs from the unit rate, and how to compare it properly in a quote before you sign anything.
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Your business energy renewal letter: what it means and what happens next
Got a renewal letter from your supplier? See what it should say, how notice rules work and what your options are before the deadline.
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Out-of-contract and deemed rates explained: how you end up on them and how to move off
Deemed, out-of-contract and rollover rates can cost more than a negotiated deal. See how you end up on them and what the rules say about leaving.
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Fixed or variable business energy contract: how the options really differ
Fixed, variable, flexible, deemed or rollover? See what each business energy contract means and the questions to ask before you sign.
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Why is my business energy bill so high? What is actually on it
See what sits inside a business energy bill, why it can jump when you have not changed anything, and which checks are worth making before renewal.
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