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There might not be enough electricity to go around this summer in Michigan. That could require planned outages

There might not be enough electricity to go around this summer in Michigan. That could require planned outages

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The power grid operator for Michigan and 14 other states says there may not be enough electricity to go around this summer, especially in northern states. That increases the risk of planned power outages.

MISO, the operator of the electric grid that includes Michigan, is warning there may not be enough electricity to go around this summer, which is forecast to be warmer than usual. That could mean controlled outages as an emergency measure.

MISO says the summer peak forecast is 124 Gigawatts, with only 119 GW of regularly available generation.

The group’s seasonal assessment indicates “capacity shortfalls in both the north and central regions of MISO and leaving those areas at increased risk of temporary, controlled outages to preserve the integrity of the bulk electric system,” according to JT Smith, executive director – market operations at MISO.

MISO said it has never taken the step of implementing controlled outages in Michigan before.

DTE said it has extensive preparedness plans in place in the event of a “regional MISO issue.”

The utility said it will be bringing its new 1,150 MW gas plant online in June, and said it has a large number of customers on voluntary interruptible rates whose service can be curtailed, if necessary, to maintain system reliability.

Consumers Energy said it is confident it has a reliable supply of energy to serve its customers, and “we will answer the call” if MISO asks utilities to take any actions on the hottest summer days.

The utility said it is prepared to ask large industrial customers to use less energy, and, if necessary, to ask all customers to voluntarily reduce energy use.

Extreme Drought Puts California’s Power Supply At Risk

Extreme Drought Puts California’s Power Supply At Risk

A more severe than usual drought in California has depleted reservoirs and lakes, including the ones feeding some of the largest hydropower facilities, putting the state again at risk of power outages during heat waves this summer.

Last year, residents in California went through rolling outages as there was insufficient energy to meet the high demand during the heatwave.

This year, the drought in California has reduced output of hydropower stations and could force the state with ambitious emission-reduction targets to rely more on its remaining natural gas-powered plants for baseload electricity supply.

Water levels at Lake Oroville, for example, are much lower than usual and could fall to below a threshold by August—one that could prompt state officials to shut down the Edward Hyatt Power Plant, the Associated Press reports.

The Hyatt power plant is the fourth largest energy producer of all the hydroelectric facilities in California.

North American Electric Reliability Corporation (NERC) warned last month in its 2021 Summer Reliability Assessment that parts of North America are at elevated or high risk of energy shortfalls this summer during above-normal peak temperatures. California falls in the “high risk” category, as it relies on large energy imports during peak demand and when solar resource output retreats in the evening hours, according to NERC.

“California is at risk of energy emergencies during periods of normal peak summer demand and high risk when above-normal demand is widespread in the west,” NERC says.

California needs imports to the area to “maintain reliability when demand peaks in the afternoon and to ramp up even further for several hours as internal resources draw down,” the assessment notes, despite the fact that the state will have 675 megawatts (MW) of new battery energy storage systems online at the start of the summer that can continue to supply stored energy for periods when needed.

 

One Step Closer to Blackouts

One Step Closer to Blackouts

On Thursday 24th March, Longannet Power Station closed down. This 2.4 GW, coal fired giant, was the beating heart of Scottish Electricity supply. The station opened in 1970 and was arguably past its sell by date. The Scottish supply is now based on nuclear, wind and imports with a little hydro and gas on the side. I think nuclear and wind is likely the worst combination for any grid that no sane power engineer would design. Variable and intermittent wind does not sit well with constant, base load  nuclear power. We have reached this point in pursuit of Green dogma.

In this post I examine the policy and politics that led to this event and go on to consider the social and economic consequences of a nation-wide blackout that power engineers now believe is far more likely than before.

What causes blackouts?

A blackout normally occurs as a result of an electrical fault at a power station or transmission line that causes the generator or power line to trip. Sensors on the equipment react to abnormal behaviour and automatically shut down the generator or power line. This can cause a power surge or dip on neighbouring lines causing them to trip and the fault can cascade through the system like falling dominoes.

The alternative variety of blackout is one where there is insufficient supply to meet demand and part of the transmission system needs to be shut down in order to maintain the essential and ubiquitous balance between supply and demand. This type of blackout will euphemistically become known as demand management.

Blackouts are common throughout the developing world but are relatively rare in the OECD. When they occur in the OECD chaos ensues.

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