French pharmaceutical giant Sanofi (<a href="https://live.euronext.com/en/product/equities/FR0000120578-XPAR" target="_blank">EPA:SAN</a>) has tapped German energy group RWE AG (<a href="https://www.boerse-frankfurt.de/equity/rwe-ag-st" target="_blank">ETR:RWE</a>) for the supply of 21 GWh of green electricity annually for its domestic operations.