Arauco Solar V will connect to 132 kV bars at the Arauco II substation under Transnoa S.A.’s jurisdiction, following environmental impact approval from La Rioja’s Production and Environment Ministry on May 18, 2026. The Esquina facility links to 33 kV switching yards at Esquina substation managed by Dirección Provincial de Energía de Corrientes. CAMMESA confirmed both developers met technical requirements outlined in MEM operational procedures, though both must complete communication system installations including SCOM, SMEC, and SOTR platforms before commercial operation.
The authorizations explicitly assign financial responsibility for grid unavailability costs to the project owners, instructing CAMMESA to charge developers for incremental costs imposed on other market agents and penalties paid by transmission function providers due to connection-related disruptions. This allocation mechanism reflects the regulatory shift under Resolution 400/2025, which eliminated administrative price controls and state fuel procurement centralization that characterized the previous two decades of Argentine power sector management.
Both projects published public notices without receiving objections, clearing procedural requirements for market entry. The legal framework governing these authorizations derives from Laws 15.336 and 24.065, with operational procedures established through Resolution 61/1992. The developments add to recent MEM expansions including Central Puerto’s 300 MW Centenario solar facility in San Juan authorized in March 2026 and Grupo Varsovia Energía’s 15 MW El Acequión project approved in April 2026, indicating sustained solar deployment momentum despite broader electricity market restructuring that prioritizes marginal pricing and contract-based procurement over subsidized dispatch.
This article was curated and published as part of our South American energy market coverage.
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