Power grid and stations

  • GridWeak regulation of grid soundness limits efforts to improve system reliability

    Electricity systems in the United States are so haphazardly regulated for reliability, it is nearly impossible for customers to know their true risk of losing service in a major storm, a new analysis found. Though weather-related outages have risen over the last decade, and research shows extreme weather events will occur with more intensity and frequency in the future, power providers do not necessarily have to report storm-related outages, leaving customers with an incomplete picture of the system’s reliability and potentially limiting efforts to improve system reliability, the researchers concluded.

  • GridDrought, heat to affect U.S. West's power grid

    Expected increases in extreme heat and drought will bring changes in precipitation, air and water temperatures, air density and humidity, scientists say. These changing conditions could significantly constrain the energy generation capacity of power plants — unless steps are taken to upgrade systems and technologies to withstand the effects of a generally hotter and drier climate. Power providers should invest in more resilient renewable energy sources and consider local climate constraints when selecting sites for new generation facilities, the researchers say.

  • GridU.S. West's power grid must be “climate-proofed” to lessen risks of power disruption

    Electricity generation and distribution infrastructure in the Western United States must be “climate-proofed” to diminish the risk of future power shortages, according to researchers. Expected increases in extreme heat and drought events will bring changes in precipitation, air and water temperatures, air density, and humidity. the changing conditions could significantly constrain the energy-generation capacity of power plants — unless steps are taken to upgrade systems and technologies to withstand the effects of a generally hotter and drier climate.

  • GridProtecting the U.S. power grid

    The U.S. power grid is made up of complex and expensive system components, which are owned by utilities ranging from small municipalities to large national corporations spanning multiple states. A National Academy of Sciences report estimates that a worst-case geomagnetic storm could have an economic impact of $1 trillion to $2 trillion in the first year, which is twenty times the damage caused by a Katrina-class hurricane.

  • view counter
  • EnergyThe addition of renewable energy to power grid requires flexibility

    Solar panels, wind turbines, electric vehicles, and other green power sources are proliferating rapidly, but their reliable integration into the existing electric grid is another story. A new study offers a comprehensive reimagining of the power grid that involves the coordinated integration of small-scale distributed energy resources. The study asserts that the proliferation of renewable energy must happen at the periphery of the power grid, which will enable the local generation of power that can be coordinated with flexible demand.

  • GridU.S. grid vulnerable to cyber, physical attacks

    The U.S. electric grid remains vulnerable to cyber and physical attacks, putting millions of households at risk from outages that could last a few days or weeks. Attacks on the grid occur once every four days, and though no great harm has been caused, some experts are warning that the series of small-scale incidents may point to broader security problems. “It’s one of those things: One is too many, so that’s why we have to pay attention,” says one expert. “The threats continue to evolve, and we have to continue to evolve as well.”

  • view counter
  • Infrastructure protectionU.S. yet to develop a strategy to secure nation’s critical infrastructure

    For years, the U.S. government has warned federal and state agencies about the threat posed by hackers who may target computer systems responsible for operating nuclear plants, electric substations, oil and gas pipelines, transit systems, chemical facilities, and drinking water facilities. In February 2013, President Barack Obama issued a directive stating, “It is the policy of the United States to strengthen the security and resilience of its critical infrastructure against both physical and cyber threats.” Two years later the federal government has yet to develop or adopt a consensus on how to secure America’s critical infrastructure from cyber criminals.

  • Coastal infrastructurePower grids in coastal U.S. cities increasingly vulnerable as a result of climate change

    Cities such as Miami are all too familiar with hurricane-related power outages. A new analysis finds, however, that climate change will give other major metropolitan areas a lot to worry about in the future. Johns Hopkins University engineers created a computer model to predict the increasing vulnerability of power grids in major coastal cities during hurricanes. By factoring historic hurricane information with plausible scenarios for future storm behavior, the team determined which of twenty-seven cities, from Texas to Maine, will become more susceptible to blackouts from future hurricanes. The team’s analysis could help metropolitan areas better plan for climate change.

  • Infrastructure protectionImpact of solar storm on U.S. infrastructure cannot be predicted with certainty

    Of the many threats to the U.S. electric grid, from cyberattacks to terrorism, industry experts agree that the most catastrophic, yet least likely to occur, threat is a magnetic space storm which could shut down the grid and cause other infrastructure to fail. Previous large scale solar storms include the 1859 Carrington Event — the strongest storm on record — and a March 1989 coronal mass ejection which caused a 9-hour blackout in Quebec.

  • Public healthLink between power lines and ill-health called into question

    Several past studies have suggested that the magnetic fields created by phones, high-voltage power lines, and other electrical equipment are harmful for humans. Research first carried out in the 1970s and again subsequently, found an association between people living near overhead power lines and an increased risk of childhood leukemia, and the International Agency for Research on Cancer has categorized low frequency magnetic fields as “possibly carcinogenic.” A mechanism for this association has never been found, and now a research team studying the effects of weak magnetic fields (WMFs) on key human proteins, including those crucial for health, found that they have no detectable impact.

  • CybersecurityRussian government hackers insert malware in U.S. critical infrastructure control software

    Investigators have uncovered a Trojan Horse named BlackEnergy in the software that runs much of the U.S. critical infrastructure. In a worst case scenario, the malware could shut down oil and gas pipelines, power transmission grids, water distribution and filtration systems, and wind turbines, causing an economic catastrophe. Some industry insiders learned of the intrusion last week via a DHS alert bulletin issued by the agency’s Industrial Control Systems Cyber Emergency Response Team(ICS-CERT). The BlackEnergy penetration had recently been detected by several companies. Experts say Russia has placed the malware in key U.S. systems as a threat or a deterrent to a U.S. cyberattack on Russian systems – mutual assured destruction from a cold war-era playbook.

  • EnergyState, federal role in electric utilities’ labor issues should be reexamined: Study

    Power outages have never been more costly. Electricity is critical to communication, transportation, commerce and national security systems, and wide-spread or prolonged outages have the potential to threaten public safety and cause millions, even billions, of dollars in damages. This is why it may be time to re-examine the role of public utility commissions and the effect of the National Labor Relations Act in labor disputes regarding electric utilities, a new study suggests.

  • GridStandardizing small, self-sustaining electric microgrids

    When Department of Energy and Oak Ridge National Laboratory researchers talk about “islanding,” or isolating, from the grid, they are discussing a fundamental benefit of microgrids — small systems powered by renewables and energy storage devices. The benefit is that microgrids can disconnect from larger utility grids and continue to provide power locally.

  • Power supplyLights out: Experts say instability of world’s power supplies must be urgently addressed

    A new study reveals the urgent need to address instabilities in the supply of electrical power to counteract an increase in the frequency and severity of urban blackouts. The work builds on previous studies which examined a sharp increase in electrical usage over recent years, and warned the world to prepare for the prospect of coping without electricity as instances of complete power failure become increasingly common.

  • GridSmart grid needed to shift electrical system to alternative energy: Expert

    Solar, wind, and other alternative sources are easier on the environment but less predictable than coal, gas, or oil-fired plants, demanding a more sophisticated distribution and delivery system. A more resilient, responsive electrical grid – a smart grid – would adjust electrical loads to energy demands, preventing the shutdowns that leave people without air conditioning just when they need it most. A smart grid is thus a flexible grid – it is an infrastructure which allows shifting load and demand around effectively, ultimately balancing the electrical power and delivery system at lower costs.