• Mon, June 1, 2026
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Home / ONS (National Electric System Operator)

Tags ONS (National Electric System Operator)

Canal Solar - Energy demand expected to accelerate in June, with the Northern region leading the growth.
  • June 1, 2026

Energy demand is expected to accelerate in June, with the Northern region leading the growth.

ONS projects growth of 1,4% for the month in the SIN (National Interconnected System), with progress in three subsystems and reservoirs.
Canal Solar - Energy demand expected to accelerate in June, with the Northern region leading the growth.
  • Market & Investments

Energy demand is expected to accelerate in June, with the Northern region leading the growth.

ONS projects growth of 1,4% for the month in the SIN (National Interconnected System), with progress in three subsystems and reservoirs.
Canal Solar - ONS confirms it has already structured the technical basis for the battery auction, which is still awaiting approval from the Ministry of Mines and Energy.
  • May 27, 2026

ONS confirms it has already structured the technical basis for the battery auction, which is still awaiting approval from the MME (Ministry of Mines and Energy).

Information was released by representatives of the Operator itself during WEG EPC Day 2026.
Canal Solar - ONS confirms it has already structured the technical basis for the battery auction, which is still awaiting approval from the Ministry of Mines and Energy.
  • Politics & Regulation

ONS confirms it has already structured the technical basis for the battery auction, which is still awaiting approval from the MME (Ministry of Mines and Energy).

Information was released by representatives of the Operator itself during WEG EPC Day 2026.
Canal Solar - ONS raises load forecast in Brazil; understand the importance of the indicator.
  • May 22, 2026

Brazil's National System Operator (ONS) raises load forecast; understand the importance of the indicator.

Electricity demand is expected to grow 1,2% in May compared to the same month of the previous year, according to the operator.
Canal Solar - ONS raises load forecast in Brazil; understand the importance of the indicator.
  • Market & Investments

Brazil's National System Operator (ONS) raises load forecast; understand the importance of the indicator.

Electricity demand is expected to grow 1,2% in May compared to the same month of the previous year, according to the operator.
ONS participates in international meeting of electrical system operators.
  • May 13, 2026

ONS participates in international meeting of electrical system operators.

The operator's CEO discusses the sector's prospects and presents the challenges of operating in Brazil.
ONS participates in international meeting of electrical system operators.
  • International market

ONS participates in international meeting of electrical system operators.

The operator's CEO discusses the sector's prospects and presents the challenges of operating in Brazil.
ONS updates technical note after revising calculations for solar power plants.
  • May 13, 2026

ONS updates technical note after revising calculations for solar power plants.

Operator identified inconsistencies in generation estimates.
ONS updates technical note after revising calculations for solar power plants.
  • Public security

ONS updates technical note after revising calculations for solar power plants.

Operator identified inconsistencies in generation estimates.
Rain in May should replenish reservoirs in the southern region.
  • May 11, 2026

Rain in May should replenish reservoirs in the southern region.

The forecast for water storage at the end of the month has risen to 67,8%, an increase of 25,2 percentage points.
Rain in May should replenish reservoirs in the southern region.
  • News

Rain in May should replenish reservoirs in the southern region.

The forecast for water storage at the end of the month has risen to 67,8%, an increase of 25,2 percentage points.
Source: PARPEL 2025/ONS Magazine
  • May 8, 2026

ONS does not rule out activating energy management plan on Mother's Day.

The operator stated that the measure is an exceptional action and will only be adopted as a last resort.
Source: PARPEL 2025/ONS Magazine
  • News

ONS does not rule out activating energy management plan on Mother's Day.

The operator stated that the measure is an exceptional action and will only be adopted as a last resort.
Canal Solar - MME defines guidelines for broadcast access seasons.
  • April 29

MME defines guidelines for broadcast access seasons.

The goal is to create a new model for organizing access to the electricity grid in situations of capacity disputes.
Canal Solar - MME defines guidelines for broadcast access seasons.
  • Politics & Regulation

MME defines guidelines for broadcast access seasons.

The goal is to create a new model for organizing access to the electricity grid in situations of capacity disputes.
Energy demand is expected to grow 2,7% in May, according to ONS.
  • April 27

Energy demand is expected to grow 2,7% in May, according to ONS.

Growth could put even more pressure on energy prices in the free market.
Energy demand is expected to grow 2,7% in May, according to ONS.
  • Politics & Regulation

Energy demand is expected to grow 2,7% in May, according to ONS.

Growth could put even more pressure on energy prices in the free market.
Canal Solar - Brazil already has 22 requests for data centers with signed contracts, says ONS.
  • April 13

Brazil already has 22 requests for data centers with signed contracts, says ONS.

It is expected that the load associated with these projects will grow more than 11 times in the country by 2030.
Canal Solar - Brazil already has 22 requests for data centers with signed contracts, says ONS.
  • Market & Investments

Brazil already has 22 requests for data centers with signed contracts, says ONS.

It is expected that the load associated with these projects will grow more than 11 times in the country by 2030.
A decisive year for the regulatory consolidation of curtailment.
  • April 8

A decisive year for the regulatory consolidation of curtailment.

How Brazil resolves curtailment issues could define the renewable energy investment environment in the coming years.
A decisive year for the regulatory consolidation of curtailment.
  • Opinion Article

A decisive year for the regulatory consolidation of curtailment.

How Brazil resolves curtailment issues could define the renewable energy investment environment in the coming years.
CNPE approves resolution for contracting reversible power plants in the country.
  • April 1

CNPE approves resolution for contracting reversible power plants in the country.

Measure incorporates hydroelectric storage into national energy planning.
CNPE approves resolution for contracting reversible power plants in the country.
  • Projects & Applications

CNPE approves resolution for contracting reversible power plants in the country.

Measure incorporates hydroelectric storage into national energy planning.
Environmental licensing of BESS in Brazil
  • Marco 23, 2026

Environmental licensing of BESS in Brazil

In Brazil, 'simplified' licensing does not guarantee that licensing will be simple.
Environmental licensing of BESS in Brazil
  • Opinion Article

Environmental licensing of BESS in Brazil

In Brazil, 'simplified' licensing does not guarantee that licensing will be simple.
The first 2026 Reserve Capacity Auction is aimed at contracting thermal power plants using natural gas, coal, and hydroelectric power.
  • Marco 18, 2026

The bidding for the most anticipated auction of the year begins; understand the process.

The first LRCAP of 2026 is focused on contracting thermal power plants using natural gas, coal, and hydroelectric power.
The first 2026 Reserve Capacity Auction is aimed at contracting thermal power plants using natural gas, coal, and hydroelectric power.
  • Market & Investments

The bidding for the most anticipated auction of the year begins; understand the process.

The first LRCAP of 2026 is focused on contracting thermal power plants using natural gas, coal, and hydroelectric power.
Why do hybrid plants help minimize curtailment?
  • Marco 12, 2026

Why do hybrid plants help minimize curtailment?

A hybrid power plant is characterized by the integration of different renewable energy sources in a single generating complex.
Why do hybrid plants help minimize curtailment?
  • Projects & Applications

Why do hybrid plants help minimize curtailment?

A hybrid power plant is characterized by the integration of different renewable energy sources in a single generating complex.
Brazilian manufacturer has partnered with Chinese company Vision, eyeing the growth potential of the large-capacity battery market.
  • Marco 12, 2026

Storage is not generation, consumption, or transmission, says UCB Power director.

Brazilian manufacturer has partnered with Chinese company Vision, eyeing the growth potential of the large-capacity battery market.
Brazilian manufacturer has partnered with Chinese company Vision, eyeing the growth potential of the large-capacity battery market.
  • Market & Investments

Storage is not generation, consumption, or transmission, says UCB Power director.

Brazilian manufacturer has partnered with Chinese company Vision, eyeing the growth potential of the large-capacity battery market.
ONS inaugurates space dedicated to the memory of the electricity sector.
  • Marco 11, 2026

ONS inaugurates space dedicated to the memory of the electricity sector.

The site brings together historical archives and interactive resources about the operation of the national system.
ONS inaugurates space dedicated to the memory of the electricity sector.
  • Market & Investments

ONS inaugurates space dedicated to the memory of the electricity sector.

The site brings together historical archives and interactive resources about the operation of the national system.
Institute goes to court against inclusion of coal in the 2026 capacity auction.
  • Marco 5, 2026

Institute goes to court against inclusion of coal in the 2026 capacity auction.

According to the organization, including coal-fired power plants brings legal, economic, and environmental risks to the electricity sector.
Institute goes to court against inclusion of coal in the 2026 capacity auction.
  • Market & Investments

Institute goes to court against inclusion of coal in the 2026 capacity auction.

According to the organization, including coal-fired power plants brings legal, economic, and environmental risks to the electricity sector.
MME opens debate to regulate transmission network access policy.
  • Marco 2, 2026

MME opens debate to regulate transmission network access policy.

The deadline for submitting contributions is March 31st.
MME opens debate to regulate transmission network access policy.
  • Politics & Regulation

MME opens debate to regulate transmission network access policy.

The deadline for submitting contributions is March 31st.
PLD (Price of Liquidation of Differences) did not fall during the wet season: what does this reveal about the free market?
  • Marco 2, 2026

PLD (Price of Liquidation of Differences) did not fall during the wet season: what does this reveal about the free market?

Insufficient rainfall and a conservative approach kept marginal costs high.
PLD (Price of Liquidation of Differences) did not fall during the wet season: what does this reveal about the free market?
  • Opinion Article

PLD (Price of Liquidation of Differences) did not fall during the wet season: what does this reveal about the free market?

Insufficient rainfall and a conservative approach kept marginal costs high.
ANEEL The bidding process for the transmission auction is approved, but a deadlock over the lots could delay some of the work.
  • February 24, 2026

ANEEL The bidding process for the transmission auction is approved, but a deadlock over the lots could delay some of the work.

Uncertainties regarding contracts and expiration influence the final structure of the auction.
ANEEL The bidding process for the transmission auction is approved, but a deadlock over the lots could delay some of the work.
  • Politics & Regulation

ANEEL The bidding process for the transmission auction is approved, but a deadlock over the lots could delay some of the work.

Uncertainties regarding contracts and expiration influence the final structure of the auction.
Brazil's Attorney General's Office (AGU) delimits the scope of the generation cut and rejects the "accounting cut" in distributed generation.
  • February 23, 2026

AGU responds ANEEL and states that GD's "accounting cut" is not supported by legislation.

Opinion clarifies limits to the actions of the ONS and the ANEEL no curtailment of micro and mini distributed generation
Brazil's Attorney General's Office (AGU) delimits the scope of the generation cut and rejects the "accounting cut" in distributed generation.
  • Politics & Regulation

AGU responds ANEEL and states that GD's "accounting cut" is not supported by legislation.

Opinion clarifies limits to the actions of the ONS and the ANEEL no curtailment of micro and mini distributed generation
Law 15.269/2025 inaugurates a new regulatory cycle in Brazil.
  • February 19, 2026

Law 15.269/2025 inaugurates a new regulatory cycle in Brazil.

The measure addresses billions in losses caused by cuts in renewable energy generation.
Law 15.269/2025 inaugurates a new regulatory cycle in Brazil.
  • Politics & Regulation

Law 15.269/2025 inaugurates a new regulatory cycle in Brazil.

The measure addresses billions in losses caused by cuts in renewable energy generation.
Even with "infinite transmission," there isn't enough load to absorb so much renewable energy during the day.
  • February 18, 2026

Even with "infinite transmission," there isn't enough load to absorb so much renewable energy during the day.

The Brazilian situation is not an isolated deviation, but a local manifestation of a global phenomenon.
Even with "infinite transmission," there isn't enough load to absorb so much renewable energy during the day.
  • Opinion Article

Even with "infinite transmission," there isn't enough load to absorb so much renewable energy during the day.

The Brazilian situation is not an isolated deviation, but a local manifestation of a global phenomenon.
Canal Solar - ONS projects below-average rainfall and maintains alert for SIN reservoirs.
  • February 16, 2026

ONS projects below-average rainfall and remains vigilant regarding the SIN (National Interconnected System).

The operator is maintaining heightened monitoring in light of an unfavorable hydrological scenario and the risk of reduced water storage.
Canal Solar - ONS projects below-average rainfall and maintains alert for SIN reservoirs.
  • Market & Investments

ONS projects below-average rainfall and remains vigilant regarding the SIN (National Interconnected System).

The operator is maintaining heightened monitoring in light of an unfavorable hydrological scenario and the risk of reduced water storage.
Canal Solar - Curtailment causes Brazil to waste almost a tenth of the energy it consumes.
  • February 12, 2026

Curtailment causes Brazil to waste almost 8% of the energy it consumes.

Production cuts total 48,7 TWh, a volume 300% higher than in January 2025.
Canal Solar - Curtailment causes Brazil to waste almost a tenth of the energy it consumes.
  • Market & Investments

Curtailment causes Brazil to waste almost 8% of the energy it consumes.

Production cuts total 48,7 TWh, a volume 300% higher than in January 2025.
PLD takes off and increases unease with ONS's operational decisions.
  • February 5, 2026

PLD takes off and increases unease with ONS's operational decisions.

Agents point to inconsistencies and warn of increasing risk of volatility.
PLD takes off and increases unease with ONS's operational decisions.
  • News

PLD takes off and increases unease with ONS's operational decisions.

Agents point to inconsistencies and warn of increasing risk of volatility.
Canal Solar - Reservoirs should begin February recovering, according to ONS.
  • 26 Janeiro, 2026

Reservoirs are expected to end January in recovery, according to ONS.

Falling temperatures should reduce energy demand and promote the recovery of reservoirs.
Canal Solar - Reservoirs should begin February recovering, according to ONS.
  • Market & Investments

Reservoirs are expected to end January in recovery, according to ONS.

Falling temperatures should reduce energy demand and promote the recovery of reservoirs.
CMSE reinforces preventive actions in response to below-average rainfall.
  • 15 Janeiro, 2026

CMSE reinforces preventive actions in response to below-average rainfall.

Committee defines strategies to preserve energy supply and ensure security for the National Interconnected System (SIN).
CMSE reinforces preventive actions in response to below-average rainfall.
  • News

CMSE reinforces preventive actions in response to below-average rainfall.

Committee defines strategies to preserve energy supply and ensure security for the National Interconnected System (SIN).
ONS points out that heat helped maintain the system's balance at the end of 2025.
  • 7 Janeiro, 2026

ONS points out that heat helped maintain the system's balance at the end of 2025.

Increased use of air conditioning has reduced the impact of the supply surplus on the National Interconnected System (SIN), according to the Operator.
ONS points out that heat helped maintain the system's balance at the end of 2025.
  • News

ONS points out that heat helped maintain the system's balance at the end of 2025.

Increased use of air conditioning has reduced the impact of the supply surplus on the National Interconnected System (SIN), according to the Operator.
Canal Solar - Angra 2 will be shut down for 50 days for fuel replacement and maintenance.
  • 5 Janeiro, 2026

Angra 2 will be shut down for 50 days for fuel replacement and maintenance.

The power plant will cease dispatching electricity to the National Interconnected System (SIN); the National System Operator (ONS) may activate other plants to ensure supply.
Canal Solar - Angra 2 will be shut down for 50 days for fuel replacement and maintenance.
  • Market & Investments

Angra 2 will be shut down for 50 days for fuel replacement and maintenance.

The power plant will cease dispatching electricity to the National Interconnected System (SIN); the National System Operator (ONS) may activate other plants to ensure supply.
Canal Solar - ONS projects increased load demand in the SIN (National Interconnected System) and two subsystems until the end of January.
  • December 31, 2025

ONS projects an increase in load demand in the SIN and in two subsystems until the end of January.

Data is part of the Monthly Operation Program bulletin for the operational week of January 3-9.
Canal Solar - ONS projects increased load demand in the SIN (National Interconnected System) and two subsystems until the end of January.
  • Market & Investments

ONS projects an increase in load demand in the SIN and in two subsystems until the end of January.

Data is part of the Monthly Operation Program bulletin for the operational week of January 3-9.
Canal Solar - ONS and Axia will develop a system to optimize the operation of hydroelectric plants.
  • December 30, 2025

ONS and Axia will develop a system to optimize the operation of hydroelectric plants.

The expectation is that the new tool will be available for use starting in early 2028.
Canal Solar - ONS and Axia will develop a system to optimize the operation of hydroelectric plants.
  • Technology & Innovation

ONS and Axia will develop a system to optimize the operation of hydroelectric plants.

The expectation is that the new tool will be available for use starting in early 2028.
Canal Solar - ONS states that the balance of the electrical system's operation in 2025 was positive. 
  • December 30, 2025

ONS states that the balance of the electrical system's operation in 2025 was positive.

The operator believes that the coordinated operation of generation and transmission allowed for continuous load fulfillment.
Canal Solar - ONS states that the balance of the electrical system's operation in 2025 was positive. 
  • News

ONS states that the balance of the electrical system's operation in 2025 was positive.

The operator believes that the coordinated operation of generation and transmission allowed for continuous load fulfillment.
Canal Solar - ONS concludes reactive power auction with a 21% discount.
  • December 23, 2025

ONS concludes reactive power auction with a 21% discount.

The hiring was carried out under the regulatory sandbox of ANEEL and hired 338 Mvarh employees for voltage control in MG.
Canal Solar - ONS concludes reactive power auction with a 21% discount.
  • News

ONS concludes reactive power auction with a 21% discount.

The hiring was carried out under the regulatory sandbox of ANEEL and hired 338 Mvarh employees for voltage control in MG.
  • December 16, 2025

ONS forecasts R$ 28,1 billion in works on the electrical system by 2030.

Report predicts expansion of system capacity and greater energy exchange.
  • Politics & Regulation

ONS forecasts R$ 28,1 billion in works on the electrical system by 2030.

Report predicts expansion of system capacity and greater energy exchange.

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