Discover and read the best of Twitter Threads about #energytwitter

Most recents (14)

Hey #energytwitter and other assorted nerds! The CO legislative session ends today and there have been a TON of big climate & utility bills you might be interested in. Here, let me tell you about them. 1/x
So, first there’s HB 1261, which establishes science-based, economy-wide GHG reduction targets for Colorado: 26% by 2025, 50% by 2030, and 90% by 2050 (from a 2005 baseline). Our state air regulators are tasked with developing implementing rules. 2/
Then there’s the “PUC Sunset” bill, SB 236. This one is big and has a lot of elements. Let’s hit the highlights. (It just passed today!) 3/
Read 23 tweets
Yo #energytwitter: here's some quick thoughts on the Greenstone McDowell @Ishan_Nath RPS paper. I'm going to stick to my comparative advantage: thinking about its place in the RPS lit and high-level thoughts on the RPSs themselves, not LCOE models or capacity markets.
As @samori8 said, this is important stuff. RPSs/CESs are our main energy transition tool right now and we can always take a closer look at whether they are doing what we want, and if they're doing it cost-effectively.
This is a tough policy to analyze for a bunch of reasons outlined in the paper, and the authors do some neat stuff in order to take a shot at a comprehensive cost analysis.
Read 23 tweets
Hey, did anyone notice that we released an RPS paper this week?

Whew! Quite a discussion.

I am not an RPS expert, so I don't have a lengthy thread coming on the substance of the paper or the responses. But I do have a few thoughts on releasing a paper like this.
First, a lot of the responses have kept largely to substance. While I do not agree with all of @JesseJenkins responses to the paper, I think it is noteworthy that he has kept his comments focused on the paper's analysis.

That is the core of what makes #energytwitter so good.
But many of the responses have veered into other areas that I think are less valid.

A big one is that many people seem to think we did something special by releasing this paper or hosting an event to discuss it.

That is just not correct.
Read 20 tweets
Idea:
Communicating in 1GW-nuclear-reactor-electric-output-equivalents could be helpful, since TWh/yr can be inaccessible & a nuclear reactor might be more tangible (for some).
Divide TWh/yr by 8 to get 1 unit of "reactor-equivalent." Trying this out... 1/
Electric energy generation in US, 2018 & change from 2017

In units of 1GW-nuclear-reactor-electricity-output-equivalent

Nuclear: 101, +0.3
Renewables: 93, +4
Coal: 143, -7.5
Nat gas: 184, +21

Total: 522, +18

With these simple units, here are some arithmetic + observations: 2/
Wind & solar: The US added 5 reactor-equiv last yr! (46 now)

Context: That addition was 5/522=1% of total gen. 46/522=9% total gen in 2018.

Fun facts:
-Almost all of 12 reactor-equiv of solar were built 2013-18.
-0.8 reactor-equiv of US rooftop solar was installed last yr! 3/
Read 12 tweets
1. #EnergyTwitter, a nerdy question about performance standards. For as long as I can remember I've been vaguely aware of Japan's "Top Runner" program for appliance & device standards. And it has always struck me as incredibly clever. iea.org/policiesandmea…
2. The basic idea: for a given product category, determine the average energy efficiency. Manufacturers who fall below it pay a small penalty w/ each product; manufacturers who exceed it get a small bonus w/ each product. Then, in five years ...
3. ... *reset the product category baseline*. (After all, manufacturers have been competing to get those bonuses, so the average efficiency has increased.) Then, same thing: payments goes from those below it to those exceeding it. Repeat each five years, in perpetuity.
Read 6 tweets
I have read @JesseJenkins's piece, @JulianSpector's write up of it. Having nerded out on this topic for several years now I just can't let this one go both b/c I find it fascinating and b/c I think Jesse & co. are falling into a trap of only looking @ short run values. (1 of ?)
a typical dist solar system will be online for 30+ years. It will come as we (hopefully) decarbonize much of the economy by electrifying it. As we do that it will be important to ensure we avoid this growth from driving up peak loads and thereby infrastructure investment.(2 of ?)
If we only look at short run values-- the avoidance of line losses, the avoidance of transmission congestion, the ability to avoid a specific distribution system upgrade we are massively undervaluing DERs (3 of ?)
Read 31 tweets
There are a couple insights in this @sullydish piece (referencing @NiskanenCenter) that are being missed by #energytwitter (yay) and #climatetwitter (yikes), which are easily titillated by invocations of nuclear power 1/ nymag.com/intelligencer/…
The scale of climate is massive and the empirics—shrinking carbon budget—rising emissions) show we are going in exactly the wrong direction. So even if you have moderate tendencies, there is every reason to demand immediate policy changes and shift action. 2/
For the moderate, that means less technocratic solutions, but ambition must be similar. So big up to @aoc @DataProgress @newconsensus @rgunns et al for raising the stakes for us all and @PostOpinions for offering a counter 3/ washingtonpost.com/opinions/want-…
Read 7 tweets
For the 82nd Month in a row, Australian Oil import coverage stocks are well below the 90 day IEA minimum, despite increasing by 3 days and stable daily imports for December 2018. Australian #energysecurity remains vulnerable #OOTT #energypolicy #oil #auspol
Australian Net Oil Imports have increased by ~12% vs December 2017. Australia remains vulnerable to international oil supply disruptions while stocks remain >40% below the IEA 90 day minimum. #OOTT #energypolicy #energysecurity #oil #auspol #energytwitter
Australian Domestic Refinery Inputs only contribute 16% of Indigenous supply for local consumption. With production having declined consistently over the last 10 years, import dependency remains a strategic concern. #EnergyPolicy #EnergySecurity #OOTT #OIL #auspol
Read 23 tweets
@JadeRhinos @Proverbs1_7 @WoundedLiberal @brianefallon @AOC So there are two separate things here. The actual reducing CO₂ emissions because of climate change, of which electricity generation is the (most) important but not only factor. And a bunch of other things that are related but don't need to be part of the same bill ultimately.1/x
@JadeRhinos @Proverbs1_7 @WoundedLiberal @brianefallon @AOC On the latter, just briefly, the Dems want to be careful of only messaging to the woke, and ignoring all those people in historically Republican suburban districts that they won in 2018. I mean Virginia Beach is now held by a Democrat. 😮
That aside does #GND reduce CO₂? 2/x
@JadeRhinos @Proverbs1_7 @WoundedLiberal @brianefallon @AOC Given the fairly clear intentions signalled by @AOC & co in that FAQ, one has to seriously doubt it. But the data matters. So here is what California looks like on a typical day (& night): caiso.com/TodaysOutlook/… 3/x
Read 12 tweets
Elaborating on some of my concerns about the push for spot markets. @RBharvirkar1 @east_winds I am sure that a spot market can actually reduce some costs to discoms and bring in marginal cost pricing which will improve economic dispatch. We don't need to do it so fast 1/n
In the long run this may actually solve a lot of our problems and send the right signals to slowly eliminate uncompetitive generation, whatever the source may be. 2/n
But as we've learned from the California example (among others) , a dogmatic push for sophisticated markets can lead to lots of other problems. India's problem in power right now is primarily one of state capacity and politics. Market design cannot solve these problems. 2/n
Read 27 tweets
This is at best hasty like the California roll out and at worst a recipe for another round of NPAs and massive system dysfunction. There many low hanging fruit in terms of policies that CERC could pursue. Why it went for this is beyond me (thread) 1/n m.economictimes.com/industry/energ…
Here a few reasons a national spot market won't solve things any time soon.
1a We don't truly have a national grid. Between congestion, wheeling charges, U/I and more only certain corridors can actually move large amounts of power. Spot markets can't fix this. 2/n
1b These kind of RTMs necessarily push the grid and congestion in ways which are unpredictable. We don't even have powerflow and congestion data in the public domain. How are buyers expected to model price risk and volatility in this situation? 3/n
Read 13 tweets
Hey #energytwitter@firstsolar participated in an important study on the benefits of #dispatchablesolar[RP1] . E3 led the study, which looks at @TampaElectric’s system & uses our Plant Control System (PCS) tech, so: a thread
ethree.com/wp-content/upl…
1/ @TampaElectric’s system is a great one for studying since they are 1. relatively transmission isolated in FL; 2. have ambitious plans for solar expansion, and 3. want to expand VREs at the lowest cost to customers.
2/ We looked at different types of system dispatch of PV plants (“must take” and “curtailable” are how most PV is typically operated today) and the findings are impressive.
Read 26 tweets
In Taiwan a heroic act of pro-nuclear environmentalism occurring, RIGHT NOW. Please read & RT this thread, as very few outside of Taiwan know of this struggle. Shih-Hsiu Huang, a Taiwanese pro-nuclear activist managed to organize a group of over 300 volunteers...
#energytwitter
and collect the necessary 280,000 signatures to place a referendum to repeal Taiwan’s nuclear phase out law on this November’s ballot. Every day after work, 300+ volunteers spent hours collecting the names, phone numbers, & addresses of hundreds of thousands of supporters.
Finally at the beginning of September, after nearly 3 months of incredible volunteer work, they passed the 280k threshold to get placed on the Nov. ballot, and were hoping to add as many extra signatures as possible to account for some being invalidated on technicalities.
Read 8 tweets
Friday morning. Great time for an electrification tweetstorm - get pumped! (Or amped is more appropriate I suppose) (1/many and lots of charts, hope you like charts)
@NREL's latest report supported by our office develops scenarios to examine two main questions: how would accelerated electrification change technology adoption? What effect would this have on electricity demand? nrel.gov/docs/fy18osti/…
To start – take a look at this snapshot of 2015 primary energy use, by sector and end-use. End-uses above the black line are non-electric, below are electric. Electrification is essentially moving end-uses above the line to below the line.
Read 22 tweets

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