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io awarded Hydrostor’s A-CAES PreFEED optimisation study


Phil Penfold


Friday, 31 January 2020

io consulting (io) is pleased to announce award of a Pre-FEED Optimisation study by Hydrostor, the world’s leading developer of utility-scale energy storage facilities using its proprietary A-CAES technology and purpose-built underground storage caverns. 

This study will see io deploy its holistic expertise in collaboration with Hydrostor’s team to optimise their proprietary Advanced Compressed Air Energy Storage (A-CAES) technology. Led by io’s consultants, the project will engage deep domain technical expertise from both io’s parent organisations, Baker Hughes and McDermott International, and will be executed using the io way, which is designed to bring value through greater certainty and higher quality decisions.

Energy storage is a critical technology for the energy transition and this project award underlines io's commitment to the sector.

Sid Meloney, Hydrostor’s EVP Engineering & Projects stated 

“This is an important project for Hydrostor. We were looking for highly experienced, creative, out-of-the-box thinkers and specialised engineers to focus on developing holistic solutions that address our objectives. We are pleased to be working with io consulting, an innovative forward thinking consultancy, on this project.”

Richard Dyson, io’s CEO said

“This is an exciting project for io to be engaged upon. In addition to io’s unique capabilities and approach we plan to utilise our systems modelling techniques to fully test the holistic interdependencies and provide supply-side insights from our tier 1 parents to identify and understand the trade-offs available to find the optimum design for each type of A-CAES system.”

For more information see or follow io consulting on LinkedIn and Twitter.

about io consulting

io consulting is a strategic development consultancy created to provide greater certainty and higher decision quality to operators and help bring more energy and hydrocarbons projects to sanction by disrupting traditional approaches. io is unique with its integrated strategic-techno-commercial capabilities ensuring a balanced approach between commercial, technical and strategic priorities capitalising on multi-discipline capabilities in subsurface, drilling, subsea, marine, facilities, decommissioning/life extension and environmental alongside economic modelling. We are a joint venture between Baker Hughes and McDermott and are unique in having their know-how, expertise and data ‘hard coded’ into our DNA. For powerful thinking, visit

about Hydrostor Inc.

Hydrostor is a developer of utility-scale energy storage facilities that can be flexibly sited using its proprietary Advanced Compressed Air Energy Storage (A-CAES) technology and purpose-built underground storage caverns. A-CAES is unique as a grid storage solution: it provides long-duration storage like pumped hydro, but has the key advantage of being able to be flexibly sited where the grid needs it, allowing the targeting of high-value (and immediately available) grid applications like transmission deferral and fossil plant replacement. The technology operates very similarly to a gas plant but is entirely non-emitting, is much more cost-effective than batteries at scale with a 50+-year asset life, and is ideally suited to providing the long-duration storage resource necessary for decarbonizing the grid. Hydrostor has three projects in operation or under construction in Canada and Australia, and numerous utility-scale projects ranging in capacity from 20 – 500 MW and duration from 4 to 24 hours, in various development stages across the USA, Canada, Chile and Australia. Learn more at

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