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Jacob Mays @jacobmays.bsky.social · 28d

Did not see that coming!

Jesse D. Jenkins @jessedjenkins.com · 28d

Do it! More than two gigawatts of round the clock emissions free power deliverable straight into NYC. Closing it was a huge mistake. Let's fix that mistake now.
www.politico.com/news/2025/09... 🔌💡⚛️

Politico headline says "Indian Point owner floats restart of shuttered nuclear reactors."

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Reposted by Jacob Mays

Will Gorman @wfgorman.bsky.social · Sep 2

💡 New Transmission Paper alert 💡
“Electric transmission value and its drivers in United States power markets” just went live in Nature Communications! Kudos especially to Julie Mulvaney Kemp for getting this work to the finish line.

doi.org/10.1038/s414...

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Jacob Mays @jacobmays.bsky.social · Aug 20

That should say "Revisiting" instead of "Rethinking"

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Jacob Mays @jacobmays.bsky.social · Aug 19

Our paper "Rethinking capacity market fundamentals," about several issues in accreditation and non-performance penalties in capacity markets, is now published in Energy Economics and is open access for the next 50 days at this link: authors.elsevier.com/c/1ldcmW3fd1...

authors.elsevier.com

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Jacob Mays @jacobmays.bsky.social · Jul 16

Can you expand on this?

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Jacob Mays @jacobmays.bsky.social · May 31

If years left pre-tenure are greater than years of eligibility remaining, seems better to wait?

Jacob Mays @jacobmays.bsky.social · May 29

Due to the lower wholesale prices, seems like it would slightly increase the cost of other procurement. So the effect on the mix depends if you think the additional cost would change the quantity procured in those auctions.

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Jacob Mays @jacobmays.bsky.social · May 28

I think the 6 GW is probably irrelevant in this case--need to know what was available specifically in zone 6 on this map. I agree that the system should be planned in a way that enables operation without both nuclear plants, but I think we'll need to wait for the MISO report to learn more.

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Jacob Mays @jacobmays.bsky.social · May 28

Still accurate to say they “played a role,” since their absence almost certainly contributed to reserve shortage in that zone.

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Jacob Mays @jacobmays.bsky.social · May 7

Do you have data on LCOE for balcony solar? Seems like it might be competitive.

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Jacob Mays @jacobmays.bsky.social · Apr 3

The basic idea is summarized in the abstract here:

This study investigates how algorithmic choices in power system operations affect the total compensation available to different technologies participating in wholesale electricity markets. We focus on systems that utilize capacity payments. The need for capacity payments arises due to the "missing money" problem, i.e., that prices in short-term markets for energy and ancillary services are suppressed below the level required to support resource adequacy. Capacity payments to different technologies are calibrated under the assumption that price suppression occurs only in instances of scarcity, such that market operators can restore theoretically efficient remuneration by tying capacity payments to estimates of production during scarcity events. However, the complexity of power system operations creates challenges with short-term price formation that can lead to price suppression in non-scarcity hours. Compensating for this form of price suppression through capacity payments results in inefficient remuneration overall. In simulations using data from the New York Independent System Operator, we show that current configurations can result in elevated payments to peaking power plants relative to technologies whose production is spread over more hours of the year (e.g., nuclear, wind, and hydropower). The results reinforce the case for price formation reforms that shift the composition of overall revenue in wholesale electricity markets away from capacity toward energy and ancillary services.

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Jacob Mays @jacobmays.bsky.social · Apr 3

New working paper, "Operational Uncertainty and the Missing Money." Here we argue that competitive electricity markets probably overcompensate peaking resources relative to those whose production is spread over more hours of the year (e.g., nuclear and hydro) papers.ssrn.com/sol3/papers....

Operational Uncertainty and the Missing Money Problem

This study investigates how algorithmic choices in power system operations affect the total compensation available to different technologies participating in wh

papers.ssrn.com

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Jacob Mays @jacobmays.bsky.social · Jan 23

I think it makes sense for the dual to be zero if non-binding or the penalty if binding. If that doesn’t accurately reflect the nature of the penalty, could model piecewise constant or piecewise linear slacks to get a smoother price outcome.

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Jacob Mays @jacobmays.bsky.social · Jan 21

Yep, the tax is embedded in the offers of emitting suppliers.

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Jacob Mays @jacobmays.bsky.social · Jan 20

What are they assuming the differences would be between "Public SMR" and "Private SMR"?

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Jacob Mays @jacobmays.bsky.social · Jan 16

I'm about to start a project on reserve deliverability, reading recommendations are welcome.

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Jacob Mays @jacobmays.bsky.social · Jan 16

We are recruiting for an undergraduate summer research opportunity in electricity market modeling, through Cornell's Office of Inclusive Excellence (sites.coecis.cornell.edu/lsampreu/). If you or someone you know wants to spend the summer in Ithaca and get into this area, check it out!

Cornell LSAMP Summer REU

sites.coecis.cornell.edu

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Reposted by Jacob Mays

Lynne Kiesling @knowledgeproblem.bsky.social · Jan 9

I'm starting off 2025, a year when I'll write a lot about the role of markets and innovation in enabling our future power systems, by writing a series about RTOs as wholesale market platforms. Part I: economic history. 📉📈 and 🔌💡
knowledgeproblem.substack.com/p/regional-t...

Regional Transmission Organizations as Market Platforms I

What's the origin story of wholesale power markets?

knowledgeproblem.substack.com

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Jacob Mays @jacobmays.bsky.social · Jan 5

Unfortunately we're having some trouble there as well: www.utilitydive.com/news/nyserda...

NYSERDA, Clean Path NY developers terminate contracts underpinning 175-mile transmission line

Clean Path NY developer Forward Power says it “remain[s] committed to New York’s energy transition” despite the loss of the project’s renewable energy credit purchase and sale agreement.

www.utilitydive.com

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Jacob Mays @jacobmays.bsky.social · Jan 5

Framing it slightly differently, what’s the cost multiplier for a nuke (or anything, really) sited in downstate New York as opposed to, e.g., Georgia?

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Jacob Mays @jacobmays.bsky.social · Dec 31

But there are related modeling challenges that are not easy to address, e.g., fuel inventory for dual-fuel units.

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Jacob Mays @jacobmays.bsky.social · Dec 31

I don't think anyone explicitly separates fuel delivery issues from other causes of generator unavailability. With decent methodology (e.g. PJM after recent reforms) it gets incorporated to the extent it shows up in historical data.

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Jacob Mays @jacobmays.bsky.social · Dec 23

Agreed that it's hard to argue with in principle, but I am not familiar enough with the details of implementation to say how effective they have been in practice.

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Jacob Mays @jacobmays.bsky.social · Dec 23

[email protected] is referring to U.S. utilities with fuel adjustment clauses that shield the utility from fuel price volatility, necessitating regulatory intervention if you want to try to restore better incentives for hedging.

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