USA Electric Grid Narrowly Dodged Huge Collapse During Storm
The unprecedented strain on the electrical grid during December’s frigid storm was threatening to trigger cascading blackouts across the Eastern US when Duke Energy Corp. called for rolling outages in North Carolina to stabilize the system, company officials said Tuesday.
Duke cut power to about 500,000 homes and businesses the day before Christmas as frigid weather sent demand surging as much as 10% above forecast while instruments froze at coal and natural gas-fired plants, forcing them to cut output.
The strain in North Carolina threatened to throw the flow of power off balance on the entire Eastern Interconnection grid, stretching from Maine to Oklahoma, and required Duke to institute outages on its own system to protect the grid at large, the executives said.
“If that doesn’t work, the stability of the Eastern Interconnection system is at risk,” Sam Holeman, Duke’s head of transmission system planning, said at a hearing Tuesday. “That risk comes in the form of uncontrolled loss of the system.”
After the lights came back on, North Carolina Gov. Roy Cooper asked Duke for a complete report on what went wrong and for changes to be made, prompting the hearing by the North Carolina Utilities Commission, which regulates electricity in the state.
A handful of Duke executives gave a timeline of the demand surge, power supply failures and system failures that made blackouts last much longer than the 15 or 30 minutes of which customers initially had been warned.
As the cold front moved into North Carolina, instruments froze at two Duke coal plants and three natural gas plants, reducing generation at those facilities, the governor’s office said in a statement Tuesday afternoon. Once Duke started rotating outages, a software problem disrupted automatic restorations, making the blackouts last longer than planned.
“The outages did not occur because of renewable energy generation,” according to the statement.
Holeman added that other utilities were in the same situation at the time. For example, Tennessee Valley Authority, a federal agency that supplies power in the region, was forced for the first time to institute rotating outages on Dec. 23 and Dec. 24 as demand soared to a winter record.
Just north of Duke’s territories, PJM Interconnection was doing all it could to prevent rotating outages from rolling across its 13-state network that stretches from the mid-Atlantic to the Midwest. PJM reduced exports, including additional reserves Duke was hoping to tap for the Carolinas.
--With assistance from Ari Natter.
What do you think? We’d love to hear from you, join the conversation on the
Rigzone Energy Network.
The Rigzone Energy Network is a new social experience created for you and all energy professionals to Speak Up about our industry, share knowledge, connect with peers and industry insiders and engage in a professional community that will empower your career in energy.
- What Do Latest OPEC+ Moves Mean?
- Par Pacific Completes Buy of ExxonMobil Refinery
- Does the Global Drug Trafficking Industry Affect Oil and Gas?
- Qatar Offers Cheaper LNG to Asian Market
- Fatality At North Rankin Complex
- Pennsylvania's Largest Coal Plant to Close amid Shift to Gas
- Philippines Receives Nearly 400 Bids for Renewables Development
- Petrobras Begins FPSO Production at Buzios
- Zenith Inks Deal Launching Its USA Expansion
- UK Energy Transition Can Create More New Jobs than Lost: Study
- Exxon and Chevron Shareholders Reject Toughening Climate Goals
- Further OPEC+ Production Cuts Are Still on the Table
- Exxon Bets New Ways to Frack Can Double Oil Pumped from Shale Wells
- Key Milestone Hit Towards Potential First Ever GOM Offshore Wind Lease Sale
- Saudi to Cut Output by 1MM BPD in Solo OPEC+ Move
- India to Boost Renewables Capacity, Avoid New Coal Plants
- Energy Groups React to Debt Ceiling Deal
- Aramco Holds Talks with Turkish Firms on $50B Planned Projects
- Kinder Morgan to Expand Gas Capacity at Texas Gulf Coast Facility
- USA Steel Major Taps ExxonMobil for Carbon Capture
- Which Generation Is Most in Demand in Oil, Gas Right Now?
- Who Is the Most Prolific Private Oil and Gas Producer in the USA?
- USA EIA Slashes 2023 and 2024 Brent Oil Price Forecasts
- BMI Reveals Latest Brent Oil Price Forecasts
- OPEC+ Has Lots of Dry Powder for Further Cuts
- Is There a Danger That Oil and Gas Runs out of Financing?
- Invictus Strikes Oil, Gas in Zimbabwe
- BMI Projects Gasoline Price Through to 2026
- What Will World Oil Demand Be in 2023?
- North America Rig Count Reduction Rumbles On