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Home / SIN (National Interconnected System)

Tags SIN (National Interconnected System)

EPE plans to use batteries to stabilize energy supply in Acre.
  • April 20

EPE plans to use batteries to stabilize energy supply in Acre.

The workshop will discuss the implementation of BESS technology to ensure the reliability of the system serving Feijó and Cruzeiro do Sul.
EPE plans to use batteries to stabilize energy supply in Acre.
  • Projects & Applications

EPE plans to use batteries to stabilize energy supply in Acre.

The workshop will discuss the implementation of BESS technology to ensure the reliability of the system serving Feijó and Cruzeiro do Sul.
Synchronous compensators regain prominence and gain space in transmission auctions.
  • April 16

Synchronous compensators regain prominence and gain space in transmission auctions.

Equipment reappears as a solution to reinforce the stability of the National Interconnected System (SIN) amidst the advance of renewables.
Synchronous compensators regain prominence and gain space in transmission auctions.
  • Market & Investments

Synchronous compensators regain prominence and gain space in transmission auctions.

Equipment reappears as a solution to reinforce the stability of the National Interconnected System (SIN) amidst the advance of renewables.
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.
LRCAP thermal power plants will emit up to 40 million tons of CO₂ per year.
  • Marco 24, 2026

LRCAP thermal power plants will emit up to 40 million tons of CO₂ per year.

IEMA estimates indicate emissions comparable to those of the entire state of Santa Catarina in 2024.
LRCAP thermal power plants will emit up to 40 million tons of CO₂ per year.
  • Public security

LRCAP thermal power plants will emit up to 40 million tons of CO₂ per year.

IEMA estimates indicate emissions comparable to those of the entire state of Santa Catarina in 2024.
Auction begins with bidding for oil and biodiesel-fired power plants.
  • Marco 20, 2026

According to LRCAP, the year begins with a dispute over oil and biodiesel-fired power plants.

EPE registered 38 projects, totaling 5.530 MW of capacity.
Auction begins with bidding for oil and biodiesel-fired power plants.
  • Market & Investments

According to LRCAP, the year begins with a dispute over oil and biodiesel-fired power plants.

EPE registered 38 projects, totaling 5.530 MW of capacity.
NEEL authorizes commercial operation of the Sol do Agreste Solar Complex.
  • Marco 16, 2026

ANEEL authorizes commercial operation of the Sol do Agreste Solar Complex

The project, located in Pernambuco, has almost 170 MW of installed capacity.
NEEL authorizes commercial operation of the Sol do Agreste Solar Complex.
  • Projects & Applications

ANEEL authorizes commercial operation of the Sol do Agreste Solar Complex

The project, located in Pernambuco, has almost 170 MW of installed capacity.
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.
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.
SIN closes February with 59% water storage and improved rainfall in strategic basins.
  • Marco 6, 2026

SIN closes February with 59% water storage and improved rainfall in strategic basins.

The Northeast presents a more favorable scenario, with projected storage levels exceeding 80%.
SIN closes February with 59% water storage and improved rainfall in strategic basins.
  • News

SIN closes February with 59% water storage and improved rainfall in strategic basins.

The Northeast presents a more favorable scenario, with projected storage levels exceeding 80%.
Solar complex worth R$2,4 billion begins commercial operation in Minas Gerais.
  • February 23, 2026

Solar complex worth R$2,4 billion begins commercial operation in Minas Gerais.

To date, nine of the 11 plants that make up the project are already in operation.
Solar complex worth R$2,4 billion begins commercial operation in Minas Gerais.
  • Market & Investments

Solar complex worth R$2,4 billion begins commercial operation in Minas Gerais.

To date, nine of the 11 plants that make up the project are already in operation.
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.
ANEEL Creates task force to monitor SIN (National Interconnected System) conditions amid water alert.
  • 21 Janeiro, 2026

ANEEL Creates task force to monitor SIN (National Interconnected System) conditions amid water alert.

The decree establishes a monitoring body in response to the scenario of scarcity and risks to the electrical system.
ANEEL Creates task force to monitor SIN (National Interconnected System) conditions amid water alert.
  • News

ANEEL Creates task force to monitor SIN (National Interconnected System) conditions amid water alert.

The decree establishes a monitoring body in response to the scenario of scarcity and risks to the electrical system.
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 - Thermal power plants support the National Interconnected System (SIN), but amplify the dilemma of the energy transition.
  • 2 Janeiro, 2026

Thermal power plants support the National Interconnected System (SIN), but exacerbate the dilemma of the energy transition.

Essential for water supply, this source faces and generates climate impacts, according to an EPE fact sheet.
Canal Solar - Thermal power plants support the National Interconnected System (SIN), but amplify the dilemma of the energy transition.
  • Market & Investments

Thermal power plants support the National Interconnected System (SIN), but exacerbate the dilemma of the energy transition.

Essential for water supply, this source faces and generates climate impacts, according to an EPE fact sheet.
  • 2 Janeiro, 2026

Solar imposes a new composition on the National Interconnected System (SIN) and repositions hydroelectric plants, says former director of... ANEEL

With increasing participation throughout the day, photovoltaic generation is already redefining the balance of the system, points out Edvaldo Santana.
  • News

Solar imposes a new composition on the National Interconnected System (SIN) and repositions hydroelectric plants, says former director of... ANEEL

With increasing participation throughout the day, photovoltaic generation is already redefining the balance of the system, points out Edvaldo Santana.
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 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.
Axia partners with Espírito Santo to study the implementation of a green hydrogen plant.
  • December 18, 2025

Axia forms partnership to study the implementation of a green hydrogen plant.

The project aims to help the company become Net Zero by 2030.
Axia partners with Espírito Santo to study the implementation of a green hydrogen plant.
  • Market & Investments

Axia forms partnership to study the implementation of a green hydrogen plant.

The project aims to help the company become Net Zero by 2030.
  • 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.
  • December 15, 2025

ONS indicates that SIN load should increase by up to 4% in December.

PMO report highlights North, South and Northeast subsystems as drivers of load expansion.
  • News

ONS indicates that SIN load should increase by up to 4% in December.

PMO report highlights North, South and Northeast subsystems as drivers of load expansion.
Canal Solar power in Roraima will be connected to the National Interconnected System (SIN) starting in January 2026.
  • December 9, 2025

Roraima will be connected to the National Interconnected System (SIN) starting in January 2026.

For decades, this locality was the only Brazilian state outside the National Interconnected System (SIN) due to geographical, environmental, and economic factors.
Canal Solar power in Roraima will be connected to the National Interconnected System (SIN) starting in January 2026.
  • Politics & Regulation

Roraima will be connected to the National Interconnected System (SIN) starting in January 2026.

For decades, this locality was the only Brazilian state outside the National Interconnected System (SIN) due to geographical, environmental, and economic factors.
Energy load in the SIN (National Interconnected System) falls 1,5% in September, says ONS (National System Operator).
  • November 14, 2025

Energy load in the SIN (National Interconnected System) falls 1,5% in September, says ONS (National System Operator).

Over the last 12 months, the indicator still shows an increase of 1,7%.
Energy load in the SIN (National Interconnected System) falls 1,5% in September, says ONS (National System Operator).
  • News

Energy load in the SIN (National Interconnected System) falls 1,5% in September, says ONS (National System Operator).

Over the last 12 months, the indicator still shows an increase of 1,7%.
ONS's energy surplus management plan focuses on maintaining the stability of the SIN (National Interconnected System).
  • November 3, 2025

ONS's energy surplus management plan focuses on maintaining the stability of the SIN (National Interconnected System).

Emergency measures will only be activated when there are no viable alternatives to reduce GC.
ONS's energy surplus management plan focuses on maintaining the stability of the SIN (National Interconnected System).
  • News

ONS's energy surplus management plan focuses on maintaining the stability of the SIN (National Interconnected System).

Emergency measures will only be activated when there are no viable alternatives to reduce GC.
ONS identifies protection failures as the cause of the blackout
  • October 20, 2025

ONS identifies protection failures as the cause of the blackout

More than 250 professionals and representatives from the MME and ANEEL discussed the causes of the blackout in a meeting
ONS identifies protection failures as the cause of the blackout
  • News

ONS identifies protection failures as the cause of the blackout

More than 250 professionals and representatives from the MME and ANEEL discussed the causes of the blackout in a meeting
Blackout in Paraná exposes vulnerability of national electricity system, says INEL
  • October 14, 2025

Blackout exposes vulnerability of national electricity system, says INEL

The Institute assesses that Tuesday's episode (14) reinforces the country's urgency to increase resilience with DG and smart grids
Blackout in Paraná exposes vulnerability of national electricity system, says INEL
  • Politics & Regulation

Blackout exposes vulnerability of national electricity system, says INEL

The Institute assesses that Tuesday's episode (14) reinforces the country's urgency to increase resilience with DG and smart grids
Canal Solar - Fire at substation causes blackout in all regions of Brazil
  • October 14, 2025

Fire at substation causes blackout in all regions of Brazil

SIN failure began at 0:32 a.m. at a substation in Paraná; causes still under investigation
Canal Solar - Fire at substation causes blackout in all regions of Brazil
  • News

Fire at substation causes blackout in all regions of Brazil

SIN failure began at 0:32 a.m. at a substation in Paraná; causes still under investigation
Absae launches study that projects R$77 billion in the battery market by 2034
  • September 23, 2025

ABSAE launches study that projects R$77 billion in the battery market by 2034

The publication highlights the growth of energy storage in Brazil and reinforces the role of technology in the energy transition
Absae launches study that projects R$77 billion in the battery market by 2034
  • News

ABSAE launches study that projects R$77 billion in the battery market by 2034

The publication highlights the growth of energy storage in Brazil and reinforces the role of technology in the energy transition
The electrical system may depend more on thermal power plants in early 2026
  • September 16, 2025

The electrical system may depend more on thermal power plants in early 2026

ONS highlights potential risks and recommends maximizing the use of Itaipu and São Francisco, in addition to preserving water resources in Paraná.
The electrical system may depend more on thermal power plants in early 2026
  • News

The electrical system may depend more on thermal power plants in early 2026

ONS highlights potential risks and recommends maximizing the use of Itaipu and São Francisco, in addition to preserving water resources in Paraná.
Canal Solar - Reservoirs should start August with more than 50% of capacity throughout the country
  • July 28, 2025

Reservoirs are expected to start August with more than 50% of capacity across the country

Operator states that volume guarantees safe operating conditions for the SIN to meet the country's energy demands
Canal Solar - Reservoirs should start August with more than 50% of capacity throughout the country
  • News

Reservoirs are expected to start August with more than 50% of capacity across the country

Operator states that volume guarantees safe operating conditions for the SIN to meet the country's energy demands
Canal solar - ONS releases new bulletin and predicts load drop in SIN
  • July 14, 2025

ONS releases bulletin and predicts load drop in SIN

Behavior is associated with milder temperatures in part of the country, explains the Operator's general director
Canal solar - ONS releases new bulletin and predicts load drop in SIN
  • Market & Investments

ONS releases bulletin and predicts load drop in SIN

Behavior is associated with milder temperatures in part of the country, explains the Operator's general director
Canal Solar - ONS determines increase in the use of thermal power plants to guarantee energy
  • July 3, 2025

ONS determines increased use of thermal power plants to guarantee energy supply

Request is part of the Operator's set of actions to ensure meeting cargo demands in the second half of the year
Canal Solar - ONS determines increase in the use of thermal power plants to guarantee energy
  • News

ONS determines increased use of thermal power plants to guarantee energy supply

Request is part of the Operator's set of actions to ensure meeting cargo demands in the second half of the year
Canal Solar - Auction foresees R$ 8 billion in investments with entry of new transmission lines
  • June 27, 2025

Auction foresees R$8 billion in investments with entry of new transmission lines  

There will be 1.958 km of lines and nine substations to expand the SIN's capacity and reduce bottlenecks 
Canal Solar - Auction foresees R$ 8 billion in investments with entry of new transmission lines
  • Politics & Regulation

Auction foresees R$8 billion in investments with entry of new transmission lines  

There will be 1.958 km of lines and nine substations to expand the SIN's capacity and reduce bottlenecks 
Canal Solar - If nothing is done, not even centralized generation will be able to cope, warns ONS advisor
  • June 26, 2025

If nothing is done, not even centralized generation will be able to cope, warns ONS advisor

Executive says that curtailment is an energy problem and that the solution involves the participation of all agents in the sector
Canal Solar - If nothing is done, not even centralized generation will be able to cope, warns ONS advisor
  • Politics & Regulation

If nothing is done, not even centralized generation will be able to cope, warns ONS advisor

Executive says that curtailment is an energy problem and that the solution involves the participation of all agents in the sector
Chamber invites associations to debate energy storage
  • May 22, 2025

Chamber invites associations to debate energy storage

The meeting is scheduled for next Wednesday (28)
Chamber invites associations to debate energy storage
  • Politics & Regulation

Chamber invites associations to debate energy storage

The meeting is scheduled for next Wednesday (28)
ANEEL terminates the instruction process for the Capacity Reserve Auction
  • May 21, 2025

ANEEL terminates the instruction process for the Capacity Reserve Auction

It was certainly scheduled for June 27th this year
ANEEL terminates the instruction process for the Capacity Reserve Auction
  • Politics & Regulation

ANEEL terminates the instruction process for the Capacity Reserve Auction

It was certainly scheduled for June 27th this year
Electricity sector sees 5% growth in demand in 12 months
  • May 6, 2025

Electricity sector sees 5% growth in demand in 12 months

ONS bulletin shows significant increase in the North and stability in the rest of the country
Electricity sector sees 5% growth in demand in 12 months
  • News

Electricity sector sees 5% growth in demand in 12 months

ONS bulletin shows significant increase in the North and stability in the rest of the country

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