Spain, March 4 -- ACCIONA Energia has completed the installation of an on-site photovoltaic generation and consumption system at the production facility of GrafTech, a global leader in the manufacturing of graphite materials, in Ororbia (Navarra).The facility, which became operational in mid-February, has a capacity of 1.56 MWp and will generate approximately 2GWh of renewable electricity per year. Given the high energy demand of the production facility, the system has been designed for full on-site consumption, with no electricity exported to the grid.The agreement reached between the two companies establishes a 15-year on-site PPA under an "energy-as-a-service" model, whereby GrafTech contracts the long-term supply of renewable electricit...