Source: https://tendernation.io/opportunities/01a13cdb-01fd-70bb-b5a1-e1ff39791ce2/ekfb-jv-mechanical-electrical-works-for-green-tunnel-portal-buildings-powe closed GB open procedure # EKFB JV - Mechanical & Electrical Works for Green Tunnel Portal Buildings - Power Supply System Package [Eiffage Kier JV HS2 Main Civils Works, Lots C2 & C3](https://tendernation.io/buyers/eiffage-kier-jv-hs2-main-civils-works-lots-c2-c3) Estimated value £250,000 to £500,000 Published 24 Jun 2024 Deadline Closed 5 Jul 2024 ## Who can bid - Open procedure Anyone can submit a full tender; there is no shortlisting stage. ## About this tender EKFB is proud to have been appointed by HS2 to deliver civil engineering works across an 80km section of the new high speed rail link between the Chiltern Tunnel and Long Itchington Wood. Our scope of the works includes 15 viaducts, 5 km of green tunnels, 22km of road diversions, 81 bridges and around 30 million cubic metres of excavation. EKFB are looking for a competent contractor to provide the power system to the portal building . The portal building electrical distribution system shall have 100% redundancy in the form of Source A and Source-B for the LV main distribution as per the HS2 electrical design standards. The A & B transformers shall serve respective LV main switchboards. LV main Switchboards are placed in dedicated LV A & B switch rooms for improved security of supply. A cable inter-connection has been provided between the two LV main switchboards as a bus coupler. In the event of an interruption of supply to one of the incoming HV supplies, the entire building design load can be supported from only one incoming HV supply and transformer. In normal operation, each LV main switchboard shall serve approximately 50% of the power demand. An electrical, electronic and mechanical interlock shall be provided to prevent the cable link circuit breaker from being closed when it is not safe to do so. ## CPV classification Electrical wiring and fitting work Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/314a2967-cc9d-43b4-9195-ea265acb9da6) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Eiffage Kier JV HS2 Main Civils Works, Lots C2 & C3: past awards and live tenders](https://tendernation.io/buyers/eiffage-kier-jv-hs2-main-civils-works-lots-c2-c3) [Sector More Construction work tenders](https://tendernation.io/sectors/construction-work) ## More tenders like this [Bannister Sports Centre Athletic Track Soft Market Testing Exercise · Harrow Council · 38 days left · 26 Nov 2026](https://tendernation.io/opportunities/01a1540d-d9e4-71cb-ad57-1603e9042fec/bannister-sports-centre-athletic-track-soft-market-testing-exercise) [Building construction work – Budowa budynku mieszkalnego wielorodzinnego wraz z infrastrukturą techniczną w miejscowości Szczucin · KZN SIM Tarnów Sp. z o.o. · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a156a9-d859-7328-9ee6-a304ce645326/poland-building-construction-work-budowa-budynku-mieszkalnego-wielorodzinneg) [Floor-covering work – Universität Leipzig, Leuschnerplatz, Global Hub, Forschungsneubau · Staatsbetrieb Sächsisches Immobilien- und Baumanagement, Zentrale, Zentralstelle Vergabe- und Vertragsmanagement · 2 days left · 22 Oct 2026](https://tendernation.io/opportunities/01a156a9-acfc-73ee-baab-9e699f88521a/germany-floor-covering-work-universitat-leipzig-leuschnerplatz-global-hub) [Plastering work – Modernisierung und Erweiterung Matthias-Claudius-Heim Würzburg · Diakonisches Werk Würzburg e.V. · 1 day left · 20 Oct 2026](https://tendernation.io/opportunities/01a156a9-e605-706f-8937-7f0ba18339c0/germany-plastering-work-modernisierung-und-erweiterung-matthias-claudius-hei) [Heating plant construction work – Petrašiūnų elektrinės elektrifikacija, įrengiant elektros energijos kaupimo įrenginius, dyzelinį generatorių ir rekonstruojant 6 kV skirstyklą (projektavimas ir rangos darbai) · Akcinė bendrovė „Kauno energija“ (PV) · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a156a9-6f1d-727f-a077-bc25dec93b92/lithuania-heating-plant-construction-work-petrasiunu-elektrines-elektrifikac) [Demolition work – Rück- und Neubau Lichthochmaste · Hamburg Verkehrsanlagen GmbH · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a156a9-6ef0-7276-94e2-d5fa0cb2d6c7/germany-demolition-work-ruck-und-neubau-lichthochmaste)