CPV class

31170000: Transformers

2 UK public contracts under 31170000 end in the next 18 months. Get the new tenders filed under it every weekday morning.

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120
Contracts since 2023
28
Buyers
2
Ending in 18 months

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2 contracts under 31170000 ending in the next 18 months

The 2 ending soonest, with the supplier that holds each now. End dates come from the original award notices, so each one is a re-tender with a date on it.

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ContractBuyerHeld byEnds
Pre-Qualification Test Transformer – High Voltage (HV) SupplyORE CatapultTransVolt Power SolutionsDec 2026in 7 weeks
Transformer supplyCAMBRIDGE UNIVERSITY HOSPITALS NHS FOUNDATION TRUSTRJ Power Networks LtdFeb 2027in 3 months

Coming up

Planned procurements under 31170000

Tenders buyers have said they will publish, from their Find a Tender pipeline notices, the soonest first.

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What 31170000 covers

CPV code 31170000 is "Transformers", a class in the Common Procurement Vocabulary used to classify UK public sector contracts. It, or a more specific code beneath it, was used on 120 UK public contracts since 2023, awarded by 28 buyers, most often Scottish Hydro Electric Transmission PLC and Southern Water Services Limited. The typical contract was worth about £1.5m.

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UK public contracts since 2023

How buyers use 31170000

Contracts
120
Buyers
28
Typical value
£1.5m
Ending in 18 months
2

By year of award: 2023 14 · 2024 46 · 2025 51 · 2026 9. Figures as of 6 November 2026. Typical value is the median of single-supplier contracts with a published value (55).

Suppliers winning most often

  1. Sieyuan Electrical Co Ltd6
  2. P and I Generators Limited5
  3. Elettromeccanica Tironi SRL5
  4. Efacec Energia, Maquinas E Equipamentos Electricos S.A5
  5. Brush Transformers Limited4
  6. SSE Energy Supply Limited4
  7. CorEnergy Limited4
  8. UK Power Networks (Operations) Limited4

Recent contracts under 31170000

ContractBuyerValueAwarded
CO Supply & Install - Transformers - LT 628 - Willowdale 1128SSE plc£6.1mJul 20264 months ago
OO Supply & Install – 275/275kV 785 MVA Phase Shifting Transformers – BlackhillockSSE plcApr 20267 months ago
SWAST-5211-FM EV ChargersSOUTH WESTERN AMBULANCE SERVICE NHS FOUNDATION TRUST£392kMar 20267 months ago
UKRI-5420 - Synchrotron Arbitrary Waveform GeneratorsUK Research & Innovation (UKRI)£2.3mMar 20268 months ago
CSP26291 - Tier 2 transformer and feeder pillarUK Research and Innovation£32kMar 20268 months ago
Procurement, Installation, Commissioning and Setting to work of 2 Uninterrupted Power Supply (UPS)Sellafield LimitedJan 202610 months ago
Refurbished 1MVA 11Kv/433V TransformerUK Atomic Energy Authority£60kJan 202610 months ago
Replacement of TransformerWARRINGTON AND HALTON TEACHING HOSPITALS NHS FOUNDATION TRUST£70kDec 202511 months ago

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Where it sits

Codes above 31170000

  1. 31000000Electrical machinery, apparatus, equipment and consumables; lighting
  2. 31100000Electric motors, generators and transformers
  3. 31170000Transformers

See the whole market in electrical equipment and lighting contracts, with buyers, suppliers and contracts ending soon.

Questions

About CPV code 31170000

What is CPV code 31170000?

CPV code 31170000 is "Transformers", a class in the Common Procurement Vocabulary used to classify UK public sector contracts. It, or a more specific code beneath it, was used on 120 UK public contracts since 2023, awarded by 28 buyers, most often Scottish Hydro Electric Transmission PLC and Southern Water Services Limited. The typical contract was worth about £1.5m.

Which codes sit above and below 31170000?

31170000 sits under 31000000 (Electrical machinery, apparatus, equipment and consumables; lighting), then 31100000 (Electric motors, generators and transformers). It has 4 more specific codes beneath it, the most used being 31171000 (Liquid dielectric transformers).

Who wins contracts under CPV code 31170000?

The suppliers named most often on UK public contracts under 31170000 since 2023 are Sieyuan Electrical Co Ltd (6), P and I Generators Limited (5), Elettromeccanica Tironi SRL (5). 78 different suppliers have won work under this code.

How do I get alerts for tenders using CPV code 31170000?

Add 31170000 to a Tender Radar profile, with keywords that describe your work. Each weekday morning you get the new UK public sector notices that match, scored for fit. Because codes cover the codes beneath them, adding 31170000 also catches notices classified under its more specific codes.

How to cite this data

Tender Radar (2026) CPV code 31170000: Transformers [Dataset]. Professor AI. Available at: https://tender-radar.co.uk/cpv-codes/31170000-transformers (Accessed: 7 November 2026).

The figures change as notices are published, so the citation carries the date you read them.

Relative dates (such as “in 6 days”) count from 7 November 2026, when this page was built.

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