Caes projects worldwide

CAES – New Development Projects

WorldwideAn Overview of Some of the Many CAES Projects

Currently Being Carried Out Worldwide

12/04/2023

12/04/2023Compressed Air Energy Storage Systems Worldwide 2

Overview General Compression Technology

Larne CAES System, Northern Ireland

Iowa Stored Energy Park

San Joaquin County CAES System

Norton CAES System

Dresser-Rand

New York Power Authority Research

SustainX Demonstration CAES Project

Conclusions


General Compression Technology

Have researched and designed the General Compression Advanced Energy Storage (GCAESTM) system1. Based on reversible thermodynamics, they claim a

near-isothermal process, covering both the compression and expansion stages. Efficiency – 75%Cost – $800 - $1000/kW2

Have a fully operational 100kW multi-stage plant in Watertown, Massachusetts.

Construction of second generation GCAES, 2MW, 500MWh system with wind turbine integration now underway in Texas.

[1] Source: General Compression – Who We Are[2] Source: General Compression - Fuel-Free Geologic Compressed Air Energy Storage From Renewable Power - Task #1 Deliverable Report


LarneA planned gas storage system by InfraStrata and

North East Storage that was subject to heavy opposition due to the disposal of brine in the sea, amongst many other safety concerns3. Gaelectric have now carried out tests to determine

the feasibility of the area for CEAS.£175million project£10million set aside for feasibility studyPower Output: 140 - 300MW

[3] Source: Larne Times – Test Data will Provide Data on Wind-Energy Storage Potential


Iowa Stored Energy Park

Planned project studied for 8 years to store wind energy through compression of air in sandstone aquifers below the ground.Power Output: 270MW$400million4

Project terminated in 2011 due to geology reasons.

[4] Source: Sandia Report – Lessons from Iowa


San Joaquin County CAES Site Testing

Pacific Gas & Electric Company (PG&E) spent three weeks conducting tests on a depleted natural gas reservoir, capable of storing 300MW of power lasting 10 hours5.

Engineers and geologists have been studying 10m sections of rock in order to determine the feasibility of CAES, as has to be the case with all CAES projects6.

Results are yet to be published.

[5] Source: Energy Storage Exchange - Advanced Underground CAES Project w/Saline Porous Rock Formation[6] Source: PGE Currents- Electricity Out of Thin Air? PG&E Exploring New Type of Clean Energy


Norton, Ohio CAES Project

This project has been researched for over a decade now, changing company hands with current owners First Energy.

The proposal7:CAES in a disused Limestone minePower Output: 270MW initially rising to 2700MW as

more and more phases are built.

[7] Source: First Energy Corporation – Alternative and Renewable Energy


Dresser-RandDresser-Rand have recently been awarded the

contract to proved the equipment for a 317MW CAES system in Texas, working in partnership with Apex.Dresser-Rand also supplied the turboexpander

turbines for the McIntosh CAES plant.



Provide around 25% of the energy requirements of New York State, and are looking to supply renewable energy options to all their customers.

Mission statement:“to advance the generation and utilization of

renewable energy through project implementation, research and technology transfer”8

[8] Source: New York Power Authority - Energy Storage Activities at New York Power Authorities


Underground CAES feasibility study8

Power Output: 300MWCompressor Power: 215MWStorage Capacity: 10 hoursCost: $700/kWh

Above ground CAES feasibility study3 foot diameter 2 mile pipeworkPower Output: 10MWStorage Capacity: 2hours


[8] Source: New York Power Authority - Energy Storage Activities at New York Power Authorities


SustainX CAES Demonstration Project

Small start-up company who raised $14.4million and received a grant from US DoE of $5.39million, highlighting the recognition for such projects to be developed9.

A 50kW plant has already been built and now construction has begun on a 1MW, 4MWh plant10. Built using SustainX’s patented Isothermal

technology, boasting the lack of fuel and secondary heat sources involved.

95% efficiency in both compression and expansion.

[9] Source: Gigaom - SustainX Raises $14.4M for Air Energy Storage[10] Source: US DoE – SistainX Inc - Isothermal Compressed Air Energy Storage


Conclusions“Industry sources estimate that there are more than 40 such

projects being contemplated over the next 5 to 10 years”

As can be seen through the examples provided throughout this presentation, compressed air energy storage is an area of heavy research with projects being set up by a number of companies.

The original technology is already proven by the plants at Huntorf and McIntosh, and now with advancements in technology far greater efficiencies can be achieved.

CAES systems provide an area of Engineering that could become the focal-point for many years to come, with investments richly rewarding.


Thank you