What Does an Extended Cold Spell Look Like?

This is a follow up to our blog posted Monday evening titled “What Does a Cold Day Look Like?” and looks at the impact on real-time wholesale electricity pricing of extended cold weather. We reported that as a result of Winter Storm Hercules barreling through the Mid-West, Mid-Atlantic and Northeast last Thursday and Friday (January…

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What Does a Cold Day Look Like?

In previous blog posts, we have examined how weather and other events affect electricity prices. What Does a Superstorm (Sandy) Look Like? What Does a Derecho Look Like?  What Does a Warm Day Look Like? What Does an Earthquake Look Like? We continue this series by looking at how electricity prices in the PJM Interconnection…

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Day-Ahead and Real-Time Pricing in NYISO

We recently looked at the Day-Ahead and Real-Time electricity markets in PJM.  The New York Independent System Operator (NYISO) also operates a two settlement process with Day-Ahead (DA) and Real-Time (RT) markets, which are the subjects of this article. First some background. The NYISO, like only two other ISOs (CalISO and ERCOT), serves only one…

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Day-Ahead and Real-Time Pricing During a Heat Wave

PJM operates two markets for energy, the Day-Ahead (DA) Market and the Real-Time (RT) Market. PJM’s Day-Ahead Market is a forward market in which hourly LMPs (locational marginal prices) are calculated for the next operating day based on generation offers, demand bids, and scheduled bilateral transactions. PJM’s Real-Time Market is a spot market in which…

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