Greg Pierce
gregspierce.bsky.social
Greg Pierce
@gregspierce.bsky.social
UCLA: Human Right to Water Solutions Lab, Luskin Center, Department of Urban Planning, Water Resources Group
Pinned
Our Nature Water comment “Redefining expectations for urban water supply systems to fight wildfire” is out ⬇️.

I started working on this w/ @edithdeguzman.bsky.social and @mullinmeg.bsky.social 10 days after the fires started.

We lay out 3 major implications from the fires for water supply systems
Reposted by Greg Pierce
While candidates *talk* about lowering electricity bills, unelected (appointed) commissioners in California may be on the verge of actually *doing* something about it. Other PUCs should consider trimming ROE as well, putting Main St. ahead of Wall St.
www.eenews.net/articles/cal...
California regulator recommends lowering utilities’ return on equity
The California Public Utilities Commission could vote next month on utilities' profit structure for 2026.
www.eenews.net
November 24, 2025 at 7:00 PM
Reposted by Greg Pierce
Important new work looking at @ladwp.com's LA100 Equity Strategies: "This case study highlights both the promise and the limitations of applied energy justice in the context of large-scale grid decarbonization."

👉 Read the case study: www.sciencedirect.com/science/arti...
Energy justice at the utility scale: Insights from Los Angeles's path to decarbonization
Decarbonization of our energy systems is key to alleviating environmental injustices and enabling a more sustainable, livable planet for all. Yet, wit…
www.sciencedirect.com
November 24, 2025 at 7:39 PM
Here's a graphical summary of our Water Systems-Wildfire article in Environmental Research Letters, which is in the Supplementary Material, but gets buried unless you know to look for it.

Thanks to @edithdeguzman.bsky.social for creating!

Full article: iopscience.iop.org/article/10.1...
November 24, 2025 at 6:53 PM
Very supportive of increased and designated funding for local fire departments. It is bizarre how we currently fund them and not conducive to success.

At the same time, a sales tax is a terrible and regressive way to do this.

www.latimes.com/california/s...
L.A. firefighters propose hike in sales tax to pay for new stations, equipment and more
“This is the most important thing for the LAFD really ever,” said Doug Coates, acting president of the city firefighter union.
www.latimes.com
November 22, 2025 at 3:38 PM
Reposted by Greg Pierce
As the one year anniversary of the LA fires approaches, the wildfire and water supply/infrastructure beat continues with a new peer-reviewed, open source paper our team wrote. It's a solutions oriented look at what is both feasible and relatively affordable iopscience.iop.org/article/10.1...
November 21, 2025 at 9:40 PM
Reposted by Greg Pierce
🚨job alert🚨

I'm looking to hire at least one PhD student for next year, looking at decarbonization-oriented technology deployment within an ethical frame of resource allocation and justice outcomes.

Full ad attached! Pref for CEEES admissions; deadline is 1 January.
November 21, 2025 at 8:45 PM
Reposted by Greg Pierce
Good chat about emergency management in these strange times on the Water Talk podcast!
November 21, 2025 at 8:12 PM
Surprise: no surprise!
During the Palisades fire, hydrants lost pressure and ran dry. A nearby reservoir was empty for repairs. After a review, state officials found that even if the reservoir had been full, the water system still would have been quickly overwhelmed and lost pressure. www.latimes.com/environment/...
Even a full reservoir wouldn't have ensured water in Palisades fire, California officials say
During the Palisades fire, a nearby reservoir was empty for repairs. State officials say even if it had been full, the water system would have been quickly overwhelmed.
www.latimes.com
November 21, 2025 at 7:45 PM
Our peer-reviewed, Open Access perspective is out in IOP Publishing's Environmental Research Letters:

"Adapting urban water supply infrastructure and policies for wildfire in the 21st century"

iopscience.iop.org/article/10.1...
November 21, 2025 at 7:39 PM
Reposted by Greg Pierce
I feel like evacuating a city of 14 million because they are going to run out of water should be a bigger story regardless of where it is.
'Iran’s capital must be moved because the country “no longer has a choice,” President Masoud Pezeshkian said on Thursday in remarks carried by state media, warning that severe ecological strain has made Tehran impossible to sustain'

#Iran 🇮🇷
Iran president says capital move now a necessity as water crisis deepens
Iran’s capital must be moved because the country “no longer has a choice,” President Masoud Pezeshkian said on Thursday in remarks carried by state media, warning that severe ecological strain has mad...
www.iranintl.com
November 21, 2025 at 3:34 PM
November 21, 2025 at 11:28 AM
A lot to digest here and apparently a lot more in the Phase 2 report, but as far as I can tell, the broad water system impacts reported here are consistent with previous factual reporting and sectoral expectation

www.latimes.com/california/s....
Fire marched toward west Altadena hours before official accounts, new report shows
A new report describes flames approaching west Altadena even earlier than previously reported, raising more questions about why evacuations were ordered there so late.
www.latimes.com
November 21, 2025 at 6:54 AM
New slide design goals
November 20, 2025 at 3:55 PM
When someone tells me to “meet by the Dragon Fountain,” I do it without any questions.
November 19, 2025 at 10:28 PM
Reposted by Greg Pierce
NEW from me: A recent study finds that fully electrified homes in Handsworth, built to adhere to a draft version of the Future Homes standard, put less pressure on the grid than researchers expected.

www.theguardian.com/environment/...
Heat-pump homes put less strain on grid than expected, study shows
Analysis of new-builds in Birmingham suggests all-electric homes not only use less energy but vary in peak usage
www.theguardian.com
November 19, 2025 at 9:14 AM
Co-sign
@lasmogguy.bsky.social put it so well.

"Before Jesse, there was no playbook. What was remarkable from the beginning is that Jesse wasn’t afraid to write stuff down, to demand things, to spend lots of time scouring for evidence.”
Jesse Marquez, tireless defender of L.A. port communities, dies at 74
November 15, 2025 at 4:51 PM
Reposted by Greg Pierce
The [LIHEAP] program helps more than six million people avoid having their service disconnected. Nearly three million people have their electricity shut off annually because they can’t afford to pay, according to the Energy Justice Lab.

@carleysanya.bsky.social - @energyjustlab.bsky.social
How to Deal With Higher Home Heating Bills
There is still time to take advantage of federal tax credits for energy updates. But federal heating aid for low-income people was delayed by the government shutdown.
www.nytimes.com
November 14, 2025 at 6:55 PM
Reposted by Greg Pierce
Reminds me of this piece from 2020 about "fire twitter" -- it's been such a huge loss. The equity piece is interesting and makes sense www.sfchronicle.com/culture/arti...
When blazes spark, ‘Fire Twitter’ heats up
Each year when wildfires flare up across California and the West, so does a small, loose-knit Twitter community of scientists, amateur radio operators, witnesses and journalists using social media to....
www.sfchronicle.com
November 14, 2025 at 6:01 PM
Interesting article looking at the emergence and function of spontaneous digital communities during 4 major wildfire events: August Complex Fire (California, 2020), Dixie Fire (California, 2021), Marshall Fire (Colorado, 2021), and Maui Wildfires (Hawaii, 2023).

www.tandfonline.com/doi/full/10....
Digital wildfire: the role of social media in emergency response during wildfire crises
This study examines the emergence and function of spontaneous digital communities during wildfire emergencies through a mixed-methods analysis of four major wildfire events: the August Complex Fire...
www.tandfonline.com
November 14, 2025 at 5:48 PM
So many questions
Used reservoir, anyone? The Dingee Reservoir — a 1.83-acre site on the corner of Bullard Drive and Estates Drive in Oakland — is an underground, decommissioned water reservoir on the market for $2.5 million #cawater www.sfgate.com/local/articl...
An exiled millionaire’s reservoir is up for sale in Bay Area
The East Bay Municipal Utility District is accepting proposals until Nov. 22.
www.sfgate.com
November 14, 2025 at 5:36 PM
Reposted by Greg Pierce
Our new study just came out taking a look at how drought influences human-wildlife conflict reports in California! Check it out here: www.science.org/doi/10.1126/...
November 12, 2025 at 11:03 PM
Great to work w/ Ariana Hernandez @luskininnovation.bsky.social & Silvia Gonzalez @uclalppi.bsky.social, now out in Environmental Justice.

We studied caregivers' role in tap trust and trade-offs decision making around household water & SSB use & spending.

www.liebertpub.com/doi/10.1177/...
Trust and Trade-Offs: Gendered Responses to Tap Water Insecurity and Sugar-Sweetened Beverage Policies | Environmental Justice
Gendered decision making around household water use and spending is well-documented in the Global South but remains under-explored in the United States. This study examines how gender and trust in tap water influence caregivers’ use of bottled or filtered water, sugar-sweetened beverage (SSB) consumption, and attitudes toward SSB taxation in California’s San Joaquin Valley, one of the state’s most environmentally burdened regions. We analyze survey responses from 155 caregivers in Kern County, located in California’s San Joaquin Valley. We use descriptive analysis and binary logistic regression models to assess associations between gender, tap water trust, SSB consumption, and attitudes toward SSB taxation. Female caregivers are significantly more likely than male caregivers to rely on alternative water sources, despite being less likely to express concern about tap water safety, suggesting a disconnect between perception and behavior. Although male and female respondents report similar SSB consumption, females are also more likely to oppose an SSB tax, report greater price sensitivity, and are less responsive to participatory budgeting approaches. Renters are more supportive of taxation when given input on spending, while Supplemental Nutrition Assistance Program -eligible households remain skeptical. Findings suggest a disconnection between perceived water safety and actual water use and spending decisions among women, likely reflecting broader caregiving burdens and resource constraints, and point toward gendered responses to health policy interventions. Integrating gender and care work into analyses of environmental health disparities and policy design is essential for addressing water insecurity and promoting equitable health outcomes in under-resourced communities.
www.liebertpub.com
November 13, 2025 at 4:10 PM
Check out Rachel Sheinberg, Stephanie Pincetl of @ccscatucla.bsky.social and my full analysis w/ @luskininnovation.bsky.social on equity in LA's transition to 100% renewable energy.

www.sciencedirect.com/science/arti...
Energy justice at the utility scale: Insights from Los Angeles's path to decarbonization
Decarbonization of our energy systems is key to alleviating environmental injustices and enabling a more sustainable, livable planet for all. Yet, wit…
www.sciencedirect.com
November 12, 2025 at 5:06 PM
Reposted by Greg Pierce
Are you a California well owner dealing with a water emergency? We can help! To find out more, visit: www.rcac.org/lending/hous...
November 10, 2025 at 9:05 PM
Reposted by Greg Pierce
"electrification is also the key to a dramatic improvement in energy efficiency, potentially reducing global final energy demand by 24% over the next 25 years, even as global GDP doubles"

A truly stunning point.

This is why I write about energy efficiency so much!

www.ft.com/content/7258...
Electrification is the key to energy efficiency
Productivity gains could cut final energy demand by nearly a quarter over the next 25 years, even as global GDP doubles
www.ft.com
November 10, 2025 at 9:45 PM