Australian Zenith Energy appoints Wärtsilä for 9.2 MW/7.7 MWh ESS September 20, 2021 | Asia Pacific Company News Zenith Energy, an independent power producer (IPP) in Australia, has made a deal with Helsinki-based technology group Wärtsilä to provide an energy storage system (ESS) to the former. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password