Discover and read the best of Twitter Threads about #energytwitter

Most recents (24)

#EnergyTwitter, I'm writing a post about the PG&E mess in California. One question I'm having a weirdly difficult time finding answers to: what is the solution? What are the options to reduce the threat going forward? Is there even a plausible plan?
This thread is awesome and so informative! Y'all are the best.

One follow-up question: I got some people confidently telling me that burying transmission lines is part of the answer & some people confidently telling me it's impossible in CA. So which is it y'all?
Welp, I've now got enough reading material on PG&E, wildfires, and the grid to keep me busy until [checks watch] forever.
Read 4 tweets
🚨New paper alert!🚨#energytwitter
In the absence of a price on carbon, the operation of grid-scale energy storage tends to increase GHG emissions, not decrease them. We propose a market rule to mitigate this effect: an Emissions Neutrality Constraint.…
First, why does energy storage tend to increase GHG emissions? Plenty of work has already been done on this topic (see R. Sioshansi and @ElephantEating for some examples), but the gist is that it's most profitable to charge with coal power and discharge to displace natural gas.
As the penetration of renewables increases, this negative effect will decrease and eventually flip (see the work of @TheEnergyCraig), but for now the beneficial effect of soaking up excess renewables is outweighed by the negative effect of coal->gas fuel switching.
Read 9 tweets
PJM's 10-hour duration requirement doesn't pass the sniff test when you look at how the system actually operates on the most challenging peak days - a thread
Some background: PJM has proposed that a resource can only get paid from the capacity market if it can inject over 10 continuous hours. So if you build a 100 MW energy storage system w/ 4 hour duration, your check will be 40% of the check sent to the owner of a 100 MW gas peaker.
PJM is an outlier. Every other ISO/RTO with a capacity market gives full, or nearly full, credit if you can dispatch for 4 hours. But PJM has argued that their peaks are 10 hours long, and so they need 10 hour dispatches to maintain a reliable system.
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#EnergyTwitter! The folks at @thetroublemag are putting together a package of stories on nationalizing utilities. They've got some Pro writers; they need a few Anti perspectives. Hit them up if you're against it.
@thetroublemag I'm going to do a deeper dive on this later, but my impression is that, while the pro-nationalization perspective is ideological, the Anti is more pragmatic: it's a huge expenditure of political capital that's basically orthogonal to the goal of decarbonization.
@thetroublemag That said I don't have particularly strong or settled views on it and look forward to reading what smart people have to say.
Read 3 tweets
1/ Clean energy thread time:

Yesterday the #Hydrogen Study for British Columbia was released. The Study makes a compelling case for clean H2 to achieve its 2050 GHG reduction targets…

#bcpoli #climate #energytwitter
2/ Interest in #hydrogen as a clean energy source has gone through peaks and valleys over the past 30 years. But, this time is different. The role for H2 is critical as a low-carbon energy carrier to address difficult to decarbonize end-uses.
3/ The promise of #hydrogen in the province is summarized nicely:
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mini-THREAD on a new debate between @KevinClimate and myself in @nature's @NatureNV column on the role of integrated assessment models (IAMs) in #climate strategies which inform much of @IPCC_CH recommendations. #climatetwitter #energytwitter 1/3
.@KevinClimate argues IAMs accelerate climate policy failure by promoting technocratic solutions & detracting attention from necessary social change. I respond that IAMs are indispensable to analyse driving forces of climate change & the scale of transformations needed 2/3
Both technocratic and social solutions can be represented in IAMs, but whether it is more feasible to deploy massive negative emissions or to radically change lifestyles should be established by disciplines other than IAMs. 3/3
Read 3 tweets
🚨 Thread on rooftop solar & net metering! 🚨

This past week @mitenergy published a podcast in which we discuss the economics of rooftop solar, and, in particular, issues related to equity, net metering, & rooftop PV.

See the podcast below, & check out this thread for more!
Before I dive in, I want to note that many of the findings in this thread are early & stem from my PhD dissertation. I'm hoping that the #EnergyTwitter hivemind will provide feedback to improve the work. Please don't hesitate to *constructively* criticize. That's why I'm here!
As #Democratic presidential candidates lay out their climate plans, many have put clean power and justice at the core of their policies.

In my PhD dissertation, I dove into one energy justice issue: How does rooftop solar adoption and rate design impact vulnerable communities?
Read 18 tweets
1/ Okay #climatetwitter and #energytwitter. Today I've been compiling a list of the top models I used for energy analysis. I figured I would make this publicly available as a resource for other folks, and to hear about what I'm missing.
2/ First a shameless plug for our (@EnergyInnovLLC) free model, the Energy Policy Simulator. The EPS covers 8 regions (US, China, India, Mexico, Indonesia, Canada, Poland, and KSA) and forecasts how policies affect energy, emissions, and cash flows.
3/ Next, work by others A-Z:

Asia-Pacific Energy Research Center Energy Demand and Supply Outlook

Energy projections for many Asian-Pacific and other countries through 2050, with information on types of energy consumed and power sector composition.…
Read 21 tweets
Hey #EnergyTwitter, I'm going to write about this stupid Ohio bill. If you have any thoughts on it (or good links), do share.…
This Ohio bill is unbelievable. So many sordid details. But here's my favorite sentence I've read so far in coverage: "FirstEnergy first revealed a year ago that the energy efficiency rules were interfering with normal market growth."
To translate: energy efficiency is causing FirstEnergy customers to reduce their energy consumption, and FirstEnergy is pitching that (to policymakers!) as a *problem*. It only profits if customers use more, more, more. Lord the utility sector is f'd up.
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"1/3 of our global food supply is pollinated by bees. Simply put, bees keep plants and crops alive."
🐝 If All The Bees In The World Die, Humans Will Not Survive:…
Deregulation and control of judiciary appointments: The core tactics at the heart of GOP anti-governance. Here's the latest in banking deregulation and it's corrosive effect on the living standards of us 99%:
Read 29 tweets
#EnergyTwitter, Please Retweet:

Announcing a new video series to introduce 35 inventions and an implementation plan for an emissions-free planet.

#ThermalHydrogen uses teamwork to provide emissions free heat and ions, pumped.

The premise of #ThermalHydrogen is that all energy suppliers--renewable, nuclear, and fossil--have unique strengths & weaknesses.

Through #teamwork, the strengths can be harnessed.

This thread previews the basic concepts, an outline for implementation, and a new company.
Key insight #1 of #ThermalHydrogen is that electrolyser/fuel cells can also filter oxygen.

This pure O2 allows fossil fuels to become more efficient and pre-empt Carbon Capture.

Therefore, it allows a path where fossil fuels can be increasingly competitive and emissions free.
Read 21 tweets
New @rff working paper w/ @AlanKrupnick! Have you heard of the ~$1 billion federal subsidy for burning coal? It’s a $7/ton tax credit for the use of “refined coal”, which is normal coal that has been sprayed with chemicals meant to make it burn cleaner. But does it work? 1/22
First, some background: refined coal barely existed in the U.S. 10 years ago, but now it makes up more than 20% of power sector coal & growing. At least 140 million tons of this stuff was burned in 2018 (see EIA Form 923). $7/ton * 140 mln tons = ~$1 billion in tax credits! 2/22
Now about the tax law: the statute requires that, to be eligible for the $7/ton credit, companies must demonstrate that the refining process reduces NOx emission rates by 20% and SO2 or mercury rates by 40%. Less pollution sounds great! But… 3/22
Read 25 tweets
and off we go #EnergyTwitter! May the thread start! 💡

Did You Know: To provide vital #oil across the English Channel after the #DDay landings, within months secret #pipelines were unwound from massive spools to reach French ports.
Following the #DDay invasion– June 6, 1944 – Allied forces would need vast quantities of #petroleum to continue the advance into #Europe. Allied leaders also knew that petroleum tankers trying to reach French ports would be vulnerable to #Luftwaffe attacks...
A top-secret “Operation #PLUTO” – Pipe Line Under The Ocean – became the Allied strategy. It would fuel victory with #oil production from the #USA petroleum industry. The secret pipeline mission used a popular #WaltDisney character for its logo. #OOTT
Read 26 tweets
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
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.…
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/…
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/…
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):… 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…
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

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