May 20, 2026 – 5.00amThe private investment firm of tech billionaire Mike Cannon-Brookes has stepped up its backing of pioneering Californian thermal storage play Antora, confident the technology can play a major role in cutting emissions from industry, including in Australia.Grok Ventures, already an investor in Antora at a corporate level, has deepened its involvement by becoming the only external provider of project-level financing for Project Big Stone, by far the company’s biggest commercial venture.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles