GreenH Electrolysis launches 1 MW PEM electrolyser for hydrogen train October 7, 2024 | News & Developments, Others, Rolling Stock GreenH Electrolysis, a joint venture between Spain’s H2B2 Electrolysis Technologies and India’s GR Infra Projects Limited has launched its first 1 megawatt (MW) proton exchange membrane (PEM)…. This content is restricted.