Overview
- ENRE data showed the outage peaked near 4 a.m. at roughly 998,000 users without power, with service recovering through the morning and thousands still affected by midday.
- Edesur said a failure at its Bosques substation cascaded to other facilities across Buenos Aires and the southern suburbs, disrupting both medium- and low‑tension service.
- Extreme temperatures pushed electricity demand to highly stressed levels, and ENRE reported cables and transformers operating above safe load limits.
- Edesur reported more than half of affected customers had service back by early morning and continued phased repairs, while public tallies fluctuated as monitoring systems were intermittently unavailable.
- The ENRE and the Energy Secretariat opened an on‑site probe at Bosques, citing a current‑transformer blast and warning of possible penalties, while the government pointed to longer‑term grid reinforcements and storage projects.