Dow Jones recently announced that it would be making a “major investment in solar energy.”

The investment in question involves installing solar panels at its South Brunswick, N.J. campus, covering a massive area of 230,000 square feet. The Dow Jones solar panels will produce an impressive 4.1 megawatts of electricity to become the single biggest solar power installation at a commercial site in the United States.

The huge solar panel installation is expected to take a year to be finished and will provide the campus with 15% of its electricity needs.