A-Z reference
Energy glossary
Plain-English definitions for every term used across the Purely Energy Hub. Each entry links back to the article it appears in, so you can read the term in context.
D
- Deemed contract
A contract you have not actively negotiated. Default tariff under a regulated cap. Applies to the bulk of English business sites that have never switched retailer since market opening on 1 April 2017.
Featured in: What happens to your water account if your retailer goes bust
I
- Interim Supply Arrangement (ISA)
This is the regulated safety net for the English business water market. If a retailer can no longer serve its customers, Ofwat asks MOSL, the body that runs the market, to move those customers across to other licensed retailers. While that happens, customers are placed on interim terms and the price they pay is capped by the Retail Exit Code.
Featured in: What happens to your water account if your retailer goes bust