Search Results for: PJM Interconnection

Massive Battery System Captures The Wind

One of the biggest challenges facing wind energy is intermittency. Wind often blows strongest when power demand is lowest, and weakest when electricity is needed the most. Because today’s power grid needs electricity to be consumed the moment it’s generated, that means wind turbines send energy to the grid half as often as an average coal plant.

What if wind farms could store the power that isn’t needed right away and sell it later when demand is high? energyNOW! correspondent Patty Kim visited an energy storage system built alongside a wind farm in the heart of coal country.

Guarding the Grid

In 2003, an overheated power line near Cleveland, Ohio sagged into a tree and shorted out. It started a cascade of power line failures across the Midwest, Northeast and parts of Canada, and causing the worst blackout in U.S. history. Since then, utilities and grid operators have used new technology and procedures to prevent another major blackout – but can they compete with an aging grid and estimated $1 trillion in required new investment?

energyNOW! anchor Thalia Assuras looked at cutting-edge technology that can prevent blackouts before they occur, talked to federal officials about government efforts to create a safer and smarter grid, and went inside the high-tech nerve center of the country’s largest grid operator to see how we’re guarding the grid.

ChatGPT & DALL-E generated panoramic image of a pile of supersaturated sodium acetate (Hot Ice) hand warmers on a steel barge on the Thames.

Barges Of Giant Hand Warmers Likely Won’t Be Heating London

This morning Dave Borlace of YouTube Just Have a Think fame reached out to ask me about a scheme to capture waste heat from a trash burning electricity plant, put it in thermal storage on barges and tow it 28 kilometers upriver to displace gas burning boilers in a district heating … [continued]

Image courtesy of NASA Earth Observatory, NASA

Peak Hourly US Electricity Demand In July Was The Second Highest Since 2016

  On July 27, 2023, peak hourly electricity demand in the continental United States reached 741,815 megawatt-hours (MWh). This peak was the second highest since we began collecting this data in 2016, just under the all-time high of 742,704 MWh recorded on July 20, 2022. Weather is a large driver … [continued]

The Southwest Power Pool (SPP) uses a more specific alert system than NERC. Source: Southwest Power Pool.

How Do Electric Grid Operators Warn Us About Extreme Heat?

Electricity grid operators often keep a wary eye towards the thermometer, particularly during the summertime danger season, as daily temperatures soar above 90 degree Fahrenheit and heat waves spread around the country. And for good reason: extreme heat events cause a host of reliability issues for the grid. Electricity demand … [continued]