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Sutton Decentralised Energy Network

What was said about SDEN, and what the documents show

SDEN is a heat-network company wholly owned by the London Borough of Sutton. We set what SDEN and the Council have said in public beside what later documents record, with links to the originals, so you can judge for yourself.

See what was said v what happened → Key facts

At a glance

  • 805homes supplied with heat and hot water at New Mill Quarter, HackbridgeVerified S3, S12
  • £2.46mowed by SDEN to the Council (draft accounts to 31 March 2025)Verified S2
  • 7+ yearssince Lavenders contracts were due to be signed (end of March 2019)Verified S9, S3
  • 1 Apr 2027forecast start of heat from the Beddington energy recovery facilityVerified S3

The record so far

18 public statements and forecasts checked against later documents

  • 5 Not delivered by the date given
  • 3 Statement did not match the record
  • 5 Partly delivered / mixed
  • 4 Not yet due / pending
  • 1 Cannot be checked yet

Read all 18 entries, each with its source →

In brief as at 24 October 2026

  • SDEN was incorporated on 23 February 2016. The Council is its only shareholder. Verified

    Sources: S1

  • It supplies heat and hot water to about 805 homes at New Mill Quarter, Hackbridge. Verified

    Sources: S3, S12

  • Planned extension to the Lavenders estate (Clarion, about 348 homes): the Council's own March 2026 plan says the planning application was not yet submitted and heat is forecast from mid 2027. Verified

    Sources: S3

  • Heat from the Beddington energy recovery facility (Viridor, up to 15 MW) is forecast from 1 April 2027. Today the main heat source is landfill-gas engines with gas back-up. Verified

    Sources: S3

  • Planning reference for the heat-pipe extension: not yet confirmed. We will not show a reference until we have seen it on the Council's planning register. Unverified

How to read this site

Every fact carries a source and a tag showing how well it is supported. We do not say anyone acted dishonestly. Where a statement does not match the documents we say so, and quote both.

  • Verified Seen in a primary document
  • Likely Supported, but not fully confirmed
  • Unverified Heard or reported, but not confirmed
  • Opinion A view, not a statement of fact

Find what you need

What SDEN said v what happened18 statements and forecasts, side by side with the record. TimelineKey dates, and promised dates against actual ones. Key facts and figuresCustomers, finances, heat source, tariffs. DocumentsLinks to the original reports and records. How to comment on a planning applicationNeutral and step by step, whichever side you take. Questions and answersWho owns SDEN, where the heat comes from, and more.

Planning applications for the extension

Whether you support or object, you are entitled to comment on a planning application. Comments are most useful when they address planning matters. See how to comment. This site does not tell you what to think and does not accept or publish comments on applications.