Mastodawn

Devon is testing pumped hydro without mountains: a 500 kW pilot using a fluid ~2.5× denser than water to make “hillside batteries” viable on gentler slopes. The bigger story: #LDES is often a permitting + finance problem, not a tech problem
https://climatetech.industryexaminer.com/devon-hillside-battery-dense-fluid-pumped-hydro-long-duration-storage/
#ClimateTech #EnergyStorage #TechNews

Devon’s “Hillside Battery” Tries to Make Pumped Hydro Work Without Mountains - ClimateTech Industry Examiner

On the outskirts of Plymouth, a china-clay mine is hosting an energy experiment that sounds almost too modest for the UK’s net-zero ambitions.

ClimateTech Industry Examiner

Tina M Casey Jan 23

Old aluminum smelter gives way to pumped hydro energy storage.

https://cleantechnica.com/2026/01/22/rye-on-a-roll-us-developer-greenlit-for-massive-pumped-hydro-energy-storage-project-on-brownfield/

#energy #energystorage #hydropower #pumpedhydro #water #waterresources #ldes #renewableenergy #renewables #waterpower #greenenergy #cleanenergy #sdg7 #battery #batteries #reservoirs #rivers #us #energypolicy

Massive Energy Storage Project Greenlit For Brownfield

The US is one step closer to adding 1.2 gigawatts of pumped hydropower storage to its renewable energy profile.

CleanTechnica

Tina M Casey Jan 23

Old aluminum smelter gives way to pumped hydro energy storage.

https://cleantechnica.com/2026/01/22/rye-on-a-roll-us-developer-greenlit-for-massive-pumped-hydro-energy-storage-project-on-brownfield/

Massive Energy Storage Project Greenlit For Brownfield

The US is one step closer to adding 1.2 gigawatts of pumped hydropower storage to its renewable energy profile.

CleanTechnica

KeithDPatch Jan 16

On-site solar PV, 32MW PEM electrolyzer using reclaimed mine water, 41hr of hydrogen storage in steel tanks, running #H2 through 7.5MW PEM fuel cells, all installed on a Questa, NM brownfield site!

Now that's a long-duration energy storage / seasonal energy storage demo!
#hydrogen #grid #LDES #PV #solar #fuelcell #electrolyzer

Pieter Colpaert Nov 18

Next week we’re hosting the second in-person #LDES workshop at #SEMIC2025.

Piotr Sowiński will be the keynote speaker. He developed Jelly, a binary RDF format for syncing RDF datasets at speeds we can only aspire to.

What is his opinion about the work we’re doing? What can we learn from eachother? Looking forward to the talk and the discussion!

KeithDPatch Oct 4

Ambri, the 2010 MIT spinout and liquid metal battery company that targeted long duration energy storage #LDES, is no more.

This is why the MIT startup ecosystem calls hard tech "hard tech."
#hardtech

Tina M Casey Aug 28

Pumped storage hydropower project aims to add more wind and solar to US grid.

https://cleantechnica.com/2025/08/27/new-pumped-hydropower-storage-project-aims-for-fast-track-approval/

#hydropower #pumpedstorage #phs #water #reservoirs #renewableenergy #energystorage #longduration #ldes #grid #cleanenergy #greenenergy #energyinfrastructure #newmexico

New Pumped Storage Hydropwer Project Proposed for New Mexico

A proposed 1.5-gigawatt pumped storage hydropower project in New Mexico aims to leverage 70 hours of long duration energy storage capacity.

CleanTechnica

Show thread

Jakob Voß Aug 25

@pietercolpaert Is there a document that compares #LDES with related methods of synchronization such as Revsion Control Systems, OAI-PMH, ResourceSync? It looks like the problem to be solved is a variant of the Cache Invalidation in "Only two hard problems in Computer Science".

Pieter Colpaert Aug 24

After 4 years of this blog post being in draft, I’ve just published the initial motivation for working on Linked Data Event Streams #LDES and kept the date at which it was planned to appear: https://pietercolpaert.be/ldes/2021/09/03/ldes

It elaborates on the maintenance hell for APIs and replication hell with dumps, and how we are fighting this status quo with the #SEMIC LDES initiative.

Tina M Casey Jul 27, 2025

Some have scoffed at C02-based long duration energy storage, but Google aims to laugh all the way to the bank.

https://cleantechnica.com/2025/07/25/google-has-a-long-duration-energy-storage-message-for-fossil-fuels-it-aint-pretty/

#energystorage #longduration #ldes #battery #batteries #co2battery #co2 #carbondioxide #renewableenergy #google #windenergy #solarenergy #cleanenergy #greenenergy #datacenters #aidatacenters

Google Has An Energy Storage Message For Fossil Fuels

Energy Dome's CO2-based long duration energy storage system has won the seal of approval from Google for rapid scaleup.

CleanTechnica