Overview
- The Energy Secretariat published Resolución 202/2026 and opened the AMBA I tender with a 120‑day window for offers and a timetable that targets technical bid opening in December and adjudication in the first half of 2027.
- AMBA I is an estimated US$800 million, multi‑lot concession to build about 270 km of 500 kV lines, a new Plomer transformer station and related 500/220/132 kV equipment to deliver roughly 2,000 MW of additional capacity to the Buenos Aires metro area.
- The financing mixes private capital under a long‑term concession with an initial non‑reimbursable CAMMESA contribution of about US$100 million, a Banco Interamericano de Desarrollo guarantee being structured, and the option for the winner to seek RIGI incentives.
- Tender rules bar firms controlled by foreign sovereign states from bidding as lead contractors or operators while allowing them to act as subcontractors, a procurement choice that narrows the field of principal bidders and has clear geopolitical implications.
- AMBA I is the first of 16 priority projects in a roughly US$6.6 billion national plan to add about 5,600 km of high‑voltage lines, a program designed to ease chronic transmission constraints, enable more generation, and change how project costs are recovered through energy charges and tariffs.