Wednesday morning Alberta declared fourth “grid alert” for its electrical system this month

Brian Zinchuk

Brian Zinchuk is editor and owner of Pipeline Online

Extreme cold warnings blanketed all of Alberta on Dec. 21. Environment Canada

For the second time in 16 hours, the Alberta Electric System Operator (AESO) declared a “grid alert,” as that province’s grid came under threat of being overloaded. It was the fourth grid alert issued in the month of December, so far.

In a tweet put out Wednesday morning, the AESO said, “Continued extreme cold weather, high electricity demand, and an unplanned outage has prompted the AESO to declare a Grid Alert at 8:25 a.m. Find information on Grid Alerts here Grid Alerts & Electricity Conservation » AESO.”

Notably, the Keephills natural gas-fired power plant, with a 463 megawatt capacity, was producing zero power.

What the AESO did not say is that at the moment the grid alert was declared, the province’s 3,618 megawatts of wind power generation capacity was putting out just 115 megawatts, or 3.2 per cent of capacity.

By 10:43, the province’s dispatchable contingency reserve for  natural gas had been maxed out. Momentarily, there was zero additional natural gas capacity that could be called upon to fill in as needed. But a minute later, that number came back to 66 megawatts. And the province was importing 765 megawatts of power.

And being the shortest day of the year on the winter solstice, solar was putting out zero megawatts at that moment, out of 1,138 megawatts nameplate capacity.

But the internal load was 11,745 megawatts, not far off the record of 12,187 set on Monday at supper time.

Wednesday morning, the entire province, from Zama to Coutts, was under an extreme cold warning from Environment Canada, causing demand to go up while wind turbines shut down at anything below -30 C. By 9:52 a.m., 27 of 36 wind farms were producing zero power, and the remaining nine were producing a total of 157 megawatts.

UPDATE:

The grid alert was called off at 12:38 p.m. Pool power prices remained maxed out at $1000 per megawatt for three hours. That’s the maximum prices allowed on the system.

• 0079 Ministry of Energy Business_incentive PO
  0079 Ministry of Energy Business_incentive PO
• 0078 LHOS 2024
  0078 LHOS 2024
• 0077 Caprice Resources Stand Up For Free Speech
  0077 Caprice Resources Stand Up For Free Speech
• 0053 Kingston Midstream Westspur Alameda
  0053 Kingston Midstream Westspur Alameda
• 0076 Latus only
  0076 Latus only
• 0073 SaskWorks-Pipeline Online
  0073 SaskWorks-Pipeline Online
• 0063 Turnbull Excavating hiring crusher
  0063 Turnbull Excavating hiring crusher
• 0061 SIMSA 2024 For Sask Buy Sask
  0061 SIMSA 2024 For Sask Buy Sask
• 0058 Royal Helium Steveville opens anonymous rocket
  0058 Royal Helium Steveville opens anonymous rocket
• 0055 Smart Power Be Smart with your Power office
  0055 Smart Power Be Smart with your Power office
• 0051 JML Hiring Pumpjack assembly
  0051 JML Hiring Pumpjack assembly
• 0049 Scotsburn Dental soft guitar
  0049 Scotsburn Dental soft guitar
• 0046 City of Estevan This is Estevan
  0046 City of Estevan This is Estevan
• 0041 DEEP Since 2018 now we are going to build
  0041 DEEP Since 2018 now we are going to build
• 0032 IWS Summer hiring rock trailer music
• 0022 Grimes winter hiring
• 0021 OSY Rentals S8 Promo
• 0018 IWS Hiring Royal Summer
• 0013 Panther Drilling PO ad 03 top drive rigs
• 0011
• 0006 JK Junior
• 0002 gilliss casing services
  0002 gilliss casing services
• 9002 Pipeline Online 30 sec EBEX
  9002 Pipeline Online 30 sec EBEX
• 9001