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20 Sep, 4 tweets, 4 min read
Great to have @MicahZiegler from @mitidss at @PrincetonSPIA today to kick off 1st Bradford Seminar of new semester & our 1st back in person. He integrates data, analytics & chemistry expertise to unpack clean energy tech cost & performance trends to accelerate their improvement.
Here's a good example of @MicahZiegler's work, with @mitidss's Jessika Trancik, "Re-examining rates of lithium-ion battery technology improvement and cost decline." pubs.rsc.org/en/content/art… (open access)
@MicahZiegler & I are both passionate about using our research to better target R&D effort, funding, and investment to accelerate innovation and improvement of critical clean energy solutions. We have limited time & limited resources, and we need to make them count!
More from @MicahZiegler here scholar.google.com/citations?user…

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More from @JesseJenkins

JesseJenkins Profile picture
11 Sep
Good morning. This bill is pretty epic!

Here is a section by section summary of what's in draft tax package from the House Ways & Means Cmte: waysandmeans.house.gov/sites/democrat…
(Part of it anyway, related to Infrastructure Financing, Green Energy, Social Safety Net, and Prescription Drugs)
First off, the clean electricity tax credits are now structured with strong incentives to pay good wages, train apprentice skilled workers, and use domestic produced iron, steel & manufactured content.
To get full tax credit values (referred to as "bonus rate"), projects must pay prevailing wages & use certain percentage of labor hours from qualified apprentice workers. Otherwise, tax credit value is only 1/5th of full value (referred to as "base" rate).
Read 34 tweets
JesseJenkins Profile picture
10 Sep
Reading legislation is NOT fun. Reading formulas in leg text is much worse (why cant we just use algebra?).
So here's a plain English (I hope) explanation of what the Clean Electricity Performance Program from House Energy & Commerce (Subtitle D: energycommerce.house.gov/newsroom/press…) says...
CEPP creates a grant program for suppliers of retail electricity that achieve a 4% year on year increase in the share of clean electricity used to supply their customers.

It also collects a payment from suppliers of retail electricity that fall short of 4% YoY ⬆️ in clean share
"Clean electricity" in this bill means any source of electricity that produces less than 0.1 tons of CO2-equivalent greenhouse gas emissions per MWh of electricity generated.

Clean share = clean electricity supply / total retail electricity sales.
Read 13 tweets
JesseJenkins Profile picture
9 Sep
Investors are pouring billions into novel 'long-duration #energystorage technologies. What techs are most promising?

Dept of @Energy's Storage Earthshot wants to cut storage costs 90%. Is that enough?

How long is 'long duration'?

My new paper w/@nsepulvedam has answers... 🧵
Our new @Joule_CP commentary (authors.elsevier.com/a/1dj0d925JEG7…) builds on a recent @NatureEnergyJnl research paper (nature.com/articles/s4156…) to sift through the broad ‘‘design space’’ for potential long-duration energy storage (LDES) technologies & offer insights to guide innovation...
In short: to meet the cost & performance targets identified in our research, LDES techs need:

1. Ultra-low energy capacity costs (~$1-10 per kilowatt-hour the device is capable of storing)
2. Suitably high efficiency (particularly for discharge)
3. >100 hrs sustained discharge.
Read 27 tweets
JesseJenkins Profile picture
15 Jul
“This is a budget-based strategy as opposed to a regulatory-based strategy,” Sen. @TinaSmithMN on a Reconciliation-friendly Clean Electricity Standard that is part of the Budget framework agreed on by @SenateBudget Dems yesterday. More via @bstorrow eenews.net/articles/payme… & 🧵
Broad contours of a Reconciliation-friendly Clean Electricity Standard (CES) are now coming into public view, as House & Senate Dems prepare a $3.5T Budget Resolution that will kick off a Reconciliation process, which permits passage of budget-related measures w/50+ Senate votes.
There are many important details to be worked out + negotiations must secure support of all 50 Senate Democrats to ensure passage, but Sen. @TinaSmithMN, who has championed this key clean energy measure, and a Budget Cmte outline of the $3.5T plan have revealed broad outlines...
Read 16 tweets
JesseJenkins Profile picture
14 Jul
The @Energy Department is targeting vastly cheaper energy storage solutions for "long duration" applications (days, weeks). @bradplumer reports for @nytimes drawing on my recent @NatureEnergyJnl paper led by @nsepulvedam nyti.ms/36ONpc1

For more: nature.com/articles/s4156…
DOE's new "Earthshot" aims to drop the cost of "long duration" storage 90% below cost of current Lithium ion batteries, the dominant grid storage option today, by 2030.

Lazard pegs cost of large 100s MWh scale Li-ion installations at $163-309/kWh so DOE target is ~$15-30/kWh.
And by "long duration", DOE means any technology technically and economically suited to >10 hours of sustained discharge.

Those targets for both duration and cost will move the needle, but based on our research, they are probably not aggressive enough.
Read 9 tweets
JesseJenkins Profile picture
24 Jun
Today's big news: @POTUS & a bipartisan group of Senators have "struck a deal" on an infrastructure package. apnews.com/article/biden-… That has many asking, What does this mean for #cleanenergy & #climateaction? tl/dr: There's now a narrow path to victory. Here's what it looks like
There's now a "two-step dance" to get both a bipartisan infrastructure bill + a party-line budget reconciliation through Congress. The former has key energy RD&D wins in it, and the latter is key to drive big emissions cuts in 2020s. Pelosi says it's all or nothing: both or none.
Pelosi today said "There ain’t going to be a bipartisan bill without a reconciliation bill."

Wyden & other senators have been clear they wont vote for infra. bill without an agreement amongst all 50 Democrats on reconciliation that has climate priorities
Read 24 tweets

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