Source: https://tendernation.io/opportunities/01a13bdf-18b3-7144-84f2-390abac638c9/supplier-funded-renewables-for-traction-dc-dppa-framework pending GB open procedure # Supplier funded renewables for Traction (DC DPPA framework) [Network Rail Infrastructure Limited](https://tendernation.io/buyers/network-rail-infrastructure-limited) Estimated value £125,000,000 Published 5 Jun 2026 Deadline Rolling deadline ## Who can bid - Sets up a framework Winning a place does not guarantee work: contracts are awarded later as call-offs, and the list usually stays closed for years. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. ## About this tender ### Background Network Rail owns, operates and maintains Great Britain’s railway infrastructure, including track, signalling, electrification systems, bridges and stations. As one of the largest electricity consumers in the UK, Network Rail uses approximately 4.5 TWh per annum (c.4.1 TWh traction and 0.45 TWh non-traction). In support of the UK Government’s Net Zero by 2050 commitment, Network Rail is seeking to transition its electricity supply towards renewable sources. ### Scope of Opportunity Network Rail’s electrified network includes: - 25 kV AC overhead line systems - 750 V DC third rail systems (Southern Region and Merseyrail) This procurement relates exclusively to the 750 V DC third rail network. The Southern Region DC traction power system comprises: - ~40 grid connection points supplied by Distribution Network Operators (DNOs) - A 33 kV (predominantly) three-phase distribution network, with limited 11 kV sections - Around 300 substations with transformer rectifier units converting AC to 750 V DC - A highly variable load profile driven by train operations - Network control via SCADA systems from electrical control rooms ### Opportunity Description Network Rail is exploring opportunities to integrate renewable energy generation “behind the meter”, directly connected to its 33 kV distribution network to supplement existing DNO supplies. An export limitation scheme will be implemented to prevent excess energy being exported to the grid. The intent is to procure energy through a Direct Power Purchase Agreement (DPPA) under a supplier-funded model. ### Supplier Requirements Network Rail is seeking expressions of interest from organisations that can demonstrate: - Proven capability in renewable generation development covering various technologies (e.g. solar, wind, storage, or hybrid solutions) - Experience with private wire / behind-the-meter connections and Power Purchase Agreements - Strong technical expertise in high-voltage integration (33 kV or similar) - Sufficient financial capacity to deliver a pilot scheme and support potential wider rollout - Ability to work within operational railway constraints ### Programme - Pilot project to be developed as an initial phase - Subject to success, potential rollout across the wider DC traction network of up to 40GWh p.a - Procurement launch anticipated: August 2026 - This will be a single supplier Framework. ### Next Steps Interested parties should submit an expression of interest via email to: Read full description ## CPV classification Electricity, heating, solar and nuclear energy Source Find a Tender (UK) · Notice ocds-h6vhtk-06a2c1-2026-06-05T09:29:42+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-06a2c1-2026-06-05T09:29:42+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. 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