✓ verbatim from the press ? no verbatim passage
Brazil's National Electric System Operator (ONS) activated for the first time on Sunday (7) an emergency plan to reduce energy generation in the country due to excess supply forecast for the day. The measure aims to prevent imbalances in the electrical system that could cause automatic shutdowns and blackouts. ✓
Press quotes (1)
"O Operador Nacional do Sistema Elétrico (ONS) acionou pela primeira vez um plano emergencial criado para reduzir a geração de energia do país, devido ao excesso de oferta de eletricidade previsto para este domingo (7/6)."
The plan was approved by the National Electric Energy Agency (Aneel) on November 18, 2025, during a public ordinary meeting of the board. The "Emergency Plan for Energy Surplus Management in the Distribution Network" allows ONS to request distributors to reduce generation from small solar, hydroelectric, wind and biomass plants connected to their networks. ?
Press quotes (1)
"A diretoria da Agência Nacional de Energia Elétrica (ANEEL) aprovou hoje (18), durante Reunião Pública Ordinária, plano emergencial de corte de geração na distribuição."
The activation occurred after ONS forecast reduced load for Sunday — low energy consumption — and found that initial reduction of plants under its direct coordination was insufficient. The operator determined cuts mainly in photovoltaic solar generation, which produces large volumes between late morning and mid-afternoon, precisely when demand is lowest on Sundays. ✓
Press quotes (1)
"Em nota divulgada neste sábado (6/6), o ONS informou que a previsão para domingo aponta uma carga reduzida, ou seja, baixo consumo de energia. O Operador determinou inicialmente a redução da geração das usinas que estão sob sua coordenação direta. Essa medida não foi suficiente para eliminar o risco"
According to the Brazilian Association of Electric Energy Distributors (Abradee), the plan will be executed between 10am and 2pm this Sunday by 12 distributors that concentrate about 80% of the installed capacity of small plants in the country. The problem of excess renewable generation had already manifested on Father's Day Sunday 2025, when solar energy reached 37.6% of national demand. ✓
Press quotes (2)
"Em nota, a Associação Brasileira de Distribuidores de Energia Elétrica (Abradee) afirmou ter sido informada pelo ONS sobre o acionamento inédito do plano emergencial de gestão de excedentes, que será acionado neste domingo, entre 10h e 14h"
"Um exemplo ocorreu no domingo de Dia dos Pais de 2025, quando a geração de energia por meio dos painéis solares chegou a atender 37,6% de toda a demanda nacional"
This is the first time ONS has activated the emergency plan since its approval by Aneel
The problem arises during high solar production hours with low demand
Covered by only some sources, or where the accounts diverge.
Covered by only some sources (2)
Father's Day 2025 served as critical precedent with solar energy reaching 37.6% of demand
Abradee criticizes lack of detailed procedures and risk of legal uncertainty
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What specific technical conditions triggered the first activation of the plan in ONS history?
Why it's still unknown: Sources do not detail the technical threshold exceeded or why previous low-demand situations did not require the mechanism
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What is the financial impact of cuts for affected small generators?
Why it's still unknown: Compensation methodology or reimbursement criteria were not informed by ONS
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How does ONS define which distributors execute cuts in each activation?
Why it's still unknown: Selection criteria for the 12 distributors mentioned only as concentration of 80% of capacity, without detailing decision-making process