Blakers, Andrew2025-06-112025-06-119781557527561ORCID:/0000-0002-0800-2276/work/163623064http://www.scopus.com/inward/record.url?scp=85118317464&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733758333Energy storage assists very high penetration of variable renewable energy sources such as wind and solar. In many regions short-term off-river pumped hydro energy storage can provide unlimited storage at far lower cost than alternatives.enPublisher Copyright: © OSA 2014.2014-11-2585118317464