Q4 2026 lead times for transformers, switchgear, generators, UPS and cooling in the UK, Ireland and northern Europe

Europe unless stated. Linesight Q2–Q4 2026 values are June 2026 forecasts. Use this table to compare transformer lead times in the UK and northern Europe with generator lead times in Europe in 2026, then download the full report for category-by-category buyer actions.

1. Finding 1

   Generators are now the longest item in the data-hall package

   Linesight has European diesel sets above 3 MW at 105 weeks for 2026, up from 60 weeks in Q1 2024. Cummins says a new large genset ordered now ships in the second half of 2028.
2. Finding 2

   Grid-scale transformers remain the slowest item overall

   European estimates run from “almost two years” on average (AVK, June 2026) to 48–60 months (PTR, March 2026). The IEA found they had almost doubled since 2021.
3. Finding 3

   Smaller, more standard equipment is easing

   MV transformers, MV switchgear, UPS, batteries and chillers are flat or falling in Linesight’s 2026 forecasts. Uptime Institute reported fewer supply-chain disruptions in 2025 than in any of the previous five years.
4. Finding 4

   Grid access policy is reshaping demand

   NESO’s reformed GB queue has about 13 GW of firm demand connecting before 2030 and 86 GW in 2030–35 (DCD, December 2025). Ireland’s CRU decision requires data centres above 10 MVA to bring dispatchable on-site or nearby generation or storage.
5. Finding 5

   Materials and regulation add new variables

   EU provisional safeguards on grain-oriented electrical steel (GOES) and transformer cores apply from 25 September 2026 to 26 February 2027 (SteelOrbis). Since 1 January 2026, the EU has banned putting into operation new F-gas MV switchgear up to 24 kV, with limited exceptions (ESB Networks).

• Order grid transformers and large generators once the grid offer and site are credible, before design freeze. Use conditional or reservation orders where offered.
• Treat MV switchgear, UPS, batteries and chillers as normal long-lead items (roughly 6 to 12 months), and confirm SF6-free MV switchgear availability for EU sites.
• Secure generator capacity through a framework or an integrator with factory allocation, and price a smaller-unit alternative.
• Ask every bidder for the named factory, the production slot date and the long-lead inputs behind their quoted lead time.

Each name links to the live profile. These are research starting points from first-party pages, not a recommended or approved-vendor list.

The report covers the UK, Ireland and northern Europe. The most detailed public regional series is Linesight’s European lead-time dataset. Where a figure is US-only, we label it and include it for direction only. Lead times are order-to-delivery unless the source says otherwise.

Public data is thin for European HV switchgear at 132 kV and above, for a quarterly European large-transformer series, and for liquid-cooling CDUs. The full PDF records every source and the rules we used.