This site is independent of Sutton Council and SDEN Ltd. It is not operated, funded or approved by either.
SDEN Facts

Checking what was said about SDEN against the published documents

Timeline

Dates are as recorded in the cited documents. “Forecast” means SDEN or the Council expects it, not that it has happened.

  1. SDEN incorporated (Companies House 10022446). Verified

    Sources: S1

  2. First heat supplied to New Mill Quarter from back-up gas boilers. Verified

    Sources: S3, S7

  3. Shareholdings Board paper: extend the network about 700 m to Lavenders; Clarion needed contracts signed before end of March 2019. Verified

    Sources: S9

  4. Beddington energy recovery facility (ERF) operational. Verified

    Sources: S3, S6

  5. Off-site low-carbon (landfill gas) heat effective for the network. Verified

    Sources: S3, S7

  6. CIPFA review (commissioned by the Council) published to Strategy & Resources Committee; says earlier model assumptions were not prudent. Verified

    Sources: S11

  7. Full build-out of heat interface units at New Mill Quarter (company plan). Likely

    Sources: S3

  8. Government pipeline lists Lavenders extension: ‘initial heat’ 2025, cost ‘circa £2M’. Verified

    Sources: S19

  9. SDEN brochure says 348 further homes ‘forecasted to complete before the end of 2025’. Verified

    Sources: S12

  10. One outage of about 4h15m reported by SDEN (1:30–5:45am). Verified

    Sources: S3

  11. Ofgem regulation of heat networks goes live; existing operators must register by 26 Jan 2027. Verified

    Sources: S22

  12. Council business plan 2026–29: Lavenders planning application still to be submitted; connection ‘from mid 2027’. Verified

    Sources: S3, S4

  13. Heat from the ERF (up to 15 MW) forecast to start. Verified

    Sources: S3

  14. Lavenders connection forecast. Verified

    Sources: S3

Promised v actual dates

MilestonePromisedActual / forecastGapSource
Phase 1: 800 homesby 2022 (2017 model)July 2023 build-outabout 12 monthsS11, S3
Lavenders: contracts signedbefore end Mar 2019not signed as of Mar 20267+ years and continuingS9, S3
Lavenders: planning applicationQ1 2025not submitted as of Mar 202612+ months and continuingS7, S3
Lavenders: heat supply2025 (DESNZ), end 2025 (brochure), mid 2026 (2025–28 plan)forecast from mid 202712–18+ months and continuingS19, S12, S7, S3
ERF heat connectionoriginal date not foundforecast 1 Apr 2027n/aS3, S6

Date check pending: the date of the 2019 First-tier Tribunal decision on release of the 2017 model review is being checked against the BAILII record before it is added. Unverified

This site is independent of Sutton Council and SDEN Ltd. It is not operated, funded or approved by either.