German renewables developer BayWa r.e. AG has finalised three solar self-consumption projects for corporate customers in Spain, installing a 2.2-MWp ground-mounted array for US pharmaceutical group Merck & Co Inc (<a href="https://www.nyse.com/quote/XNYS:MRK" target="_blank">NYSE:MRK</a>) and 1.3 MW of systems for Swedish food packaging company Tetra Pak.