By Nora Buli OSLO (Reuters) – Global fertiliser producer Yara has joined a pilot project to test a new method of producing green ammonia being developed by fellow Norwegian company Hystar, the two firms said on Wednesday. Yara Clean Ammonia has joined the HyPilot PEM electrolyser project to be commissioned in the second half of 2023, Hystar said. Electrolysers produce green hydrogen by splitting water with the use of electricity, allowing for the decarbonisation of otherwise hard-to-abate industry sectors. Hystar says its technology will use 10% less energy compared to currently available mode…