Entries in system operations (57)

Wednesday
Nov282018

2018/2019 winter outlook: New England expected to have adequate resources 

ISO New England has implemented near-term changes based on lessons learned from historic cold snap

ISO New England, operator of New England’s power system, expects the region to have the necessary resources this winter to meet consumer demand, which is expected to peak at 20,357 megawatts (MW) under normal weather conditions or 21,057 MW at extreme temperatures.

However, as seen during last year’s two-week cold snap, power system operations could become challenging if demand is higher than projected, if the region loses a large generator, electricity imports are affected, or during periods of fuel delivery constraints. In those instances, the ISO could be required to implement emergency operating procedures to maintain reliability.

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Wednesday
Nov212018

As ovens heat up on Thanksgiving Day, so does electricity demand

Every year, the ISO publishes the story below on the uniqueness of the Thanksgiving Day demand curve and how electricity use coincides with oven use and TV watching. But this Thanksgiving is expected to be anything but “traditional.” Expected cold temperatures are resulting in a weather forecast that would even be daunting for a typical January. Temperatures across the region are expected to approach and/or break record cold highs and lows, dating back as far as 1901. Here’s what we’re expecting (as of Nov. 21) for electricity demand compared to what was consumed last year:

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Thursday
Oct112018

Summer 2018: Air conditioners get a workout 

Operating the region’s power system changes with the seasons. New England is a summer-peaking system, but summer 2018 was marked by spells of hot and humid weather that drove consumer demand to peaks not seen in years and tested power system operations. Reliable grid operations were maintained throughout a summer that was bookended by holiday weather events: a heat wave in early July and an extremely hot and sticky Labor Day weekend.

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Tuesday
Aug212018

Battery storage is “charging” ahead in New England

ISO-NE continues to remove barriers and expand market access for energy-storage technologies

Grid-scale (also called utility-scale) battery storage is coming on fast in New England. While the region’s wholesale electricity markets are already open to battery storage resources, ISO New England is working to ensure they can fully reflect their physical capabilities to the markets. By 2022, currently proposed new projects could add almost 850 MW of battery storage capacity in the region. (ISO Generator Interconnection Queue, August 17, 2018) When compared to the 19 MW that are currently on line, this is a whopping increase of over 4,000%. Additionally, over 1,000 MW of the 9,400 MW of new wind and solar capacity currently proposed in the region will include some amount of battery storage.

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Friday
May252018

Beating the heat: how ISO-NE prepares for the dog days of summer

Once the region rounds the bend on winter, ISO New England begins preparing to operate the region’s power grid during the hot, humid summer months. The days of highest electricity use occur during the summer in New England when warmer weather leads to increased use of energy-intensive air conditioning, creating complex challenges for the grid operator. With a toolbox of procedures, processes, and expertise in place to ensure reliability of the bulk power grid, the ISO is capable of dealing with the wide variety of situations that can arise when demand for power is peaking.

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Thursday
May032018

A regional first: New Englanders used less grid electricity midday than while they were sleeping on April 21

Solar power also pushes past 2,300 megawatts (MW) for first time

On Saturday, April 21, 2018, the right combination of sunshine and mild weather led to light consumer demand on the high-voltage electric power system, coupled with record-high output from the more than 130,000 solar power installations in the region. The result was that midday grid demand dipped below overnight demand for the first time ever in New England.

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