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Switch business energy supplier UK: the 17-day timeline and where it breaks

The Ofgem 17-day business energy switch timeline for UK SMEs, the objection window, and the five points where the switch actually breaks.

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Chandraketu Tripathi
Finance Editor, Kaeltripton
Published 19 May 2026
Last reviewed 17 Jun 2026
✓ Fact-checked
A wooden block spelling switch on a table

Photo by Markus Winkler on Unsplash

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Switching business energy supplier in the UK: check current contract end date and exit fees; give notice within the renewal window (30 to 90 days before expiry depending on contract); obtain quotes from multiple suppliers or via a broker; sign the new contract; the new supplier handles the transfer via the 17-business-day process. Ofgem requires brokers to disclose commission from April 2025. The Energy Ombudsman handles switching disputes (Ofgem, 2026).

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The content on Kaeltripton.com is for informational and educational purposes only and does not constitute financial, investment, tax, legal or regulatory advice. Kaeltripton.com is not authorised or regulated by the Financial Conduct Authority (FCA) and is not a financial adviser, mortgage broker, insurance intermediary or investment firm. Nothing on this site should be construed as a personal recommendation. Rates, figures and product details are indicative only, subject to change without notice, and should always be verified directly with the relevant provider, HMRC, the FCA register, the Bank of England, Ofgem or other appropriate authority before any financial decision is made. Past performance is not a reliable indicator of future results. If you require regulated financial advice, please consult a qualified adviser authorised by the FCA.

CT
Chandraketu Tripathi
Finance Editor · Kaeltripton.com
Chandraketu (CK) Tripathi, founder and lead editor of Kael Tripton. 22 years in finance and marketing across 23 markets. Writes on UK personal finance, tax, mortgages, insurance, energy, and investing. Sources: HMRC, FCA, Ofgem, BoE, ONS.

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