Irina Slav for OilPrice.com:  A week after Tesla announced it had won a tender for the installation of the world’s biggest battery storage system in Australia, Siemens and AES launched a joint venture that focuses exclusively on battery storage systems. The first comments from observers suggest that this joint venture, called Fluence, could turn into stiff competition for Tesla, and there are facts to support this suggestion.

Tesla has 300 MW worth of battery-powered storage systems across 18 countries. AES and Siemens boast a combined 463 MW of such projects across 13 countries. Tesla has a gigafactory and plans to build three more. AES has a decade of experience in energy storage systems, and Siemens has more than a century of experience in all things energy technology as well as an established presence in over 160 countries around the world.

It certainly looks like the energy storage sector just got a lot more exciting. Bloomberg’s Brian Eckhouse quotes AES’ chief executive, Andres Gluski, as saying that energy storage is “the holy grail for renewables.” Gluski is certainly right: the biggest hurdle for the wider adoption of renewable energy in the past has been the lack of reliable energy storage capacity that would solve the pesky intermittency challenge that is inherent in solar and wind power generation.  Full Article: