# Quebec SEAO #20175924

High-voltage circuit insulator replacement construction services

**Posted:** October 14, 2026
**Respond By:** November 12, 2026
**Identifier:** 20175924
**NAICS:** 237130

Hydro-Québec is seeking qualified contractors to replace insulators and related accessories on high-voltage transmission circuits.
- **Buyer:** Hydro-Québec; no sub-agency or office is specified.
- **Work requested:** Construction services to replace insulators and certain accessories on 315 kV and 735 kV circuits in Montréal, Abitibi-Témiscamingue, and Côte-Nord.
- **OEMs and vendors:** No product manufacturers, OEMs, or contractor vendors are named in the opportunity. Hydro-Québec is the buyer.
- **Eligibility and notable requirements:** Bidders must be qualified by Hydro-Québec in the 735 kV Line category, including applicable special-condition and relief/backup supplier requirements. They must also meet applicable Québec licensing and contracting authorization requirements, provide required tax documentation, hold current ISO 9001 certification, submit conflict-of-interest declarations, and provide an execution program showing construction periods. French-language requirements apply.
- **Estimated value:** CAD $60 million–$80 million, including options; the estimate is indicative and not a commitment by Hydro-Québec.

### Description

The construction contract includes replacing insulators and certain accessories on 315 kV and 735 kV circuits. Work regions are Montréal, Abitibi-Témiscamingue, and Côte-Nord. Only suppliers qualified by Hydro-Québec in the 735 kV Line category, including applicable special conditions and relief/backup suppliers, may bid. The estimated value is CAD $60,000,000–$80,000,000, including options; the estimate is indicative only and without commitment by Hydro-Québec.

[View original listing](https://seao.gouv.qc.ca/avis-resultat-recherche/consulter?ItemId=5ef4e73a-dcb1-4e13-b522-c47537ba50b0)