Spanish solar power developer Acciona and Japan’s Mitsubishi Corp. are teaming up to work on solar and other renewable energy projects.

The two companies announced their first partnership Wednesday: Acciona is selling to Mitsubishi a 34 percent stake in a 45.8-megawatt solar farm in Portugal.  This marked Mitsubishi's first investment in a solar power plant, reported Bloomberg. 

Acciona invested €261 million ($330.25 million) to build the solar farm, which it says is the world’s largest, grid-connected solar project using solar panels. It began operation last December. Mitsubishi describes the farm as 53 times the size of the Tokyo Dome and twice the size of Japan's Imperial Palace. 

Acciona is a well-known solar energy project developer that has completed solar installations in various countries, including the United States.