Massachusetts-based thermal heat storage company Malta, has signed up with one of the world’s largest energy equipment vendors in Siemens Energy, to bring the Malta system to life with key components. The two will co-develop the commercial design of Malta’s long-duration energy storage system, despite having a system of its own, its “hot rocks” business, part of Siemens Gamesa. Our take is that not only is the Siemens Gamesa Electrothermal Energy Storage (ETES) technology taking a long time to come to market, it turns out it may be fatally flawed – and partnering with Malta could provide an instant replacement system that the two could market together. Hasan Özdem, Head of Technology Management and Projects at Siemens Gamesa has told…