On May 8, 2008, eBay announced the opening of its newest building on the company's North Campus in San Jose, which is the first structure in the city to be built from the ground up to LEED Gold standards.  The building, the first the company had built in its 13-year existence, uses an array of 3,248 solar panels, spanning 60,000 square feet (5,600 m2), and providing 650 kilowatts of power to eBay's campus.  The array can supply 15–18% of the company's total energy requirements, reducing the amount of greenhouse gases that would be produced to create that energy by other means. SolarCity, the company responsible for designing the array, estimates that the solar panels installed on eBay's campus will prevent 37 million pounds of carbon dioxide from being released into the environment as a result of replaced power production over the next three decades. Creating an equivalent impact to remove the same amount of carbon dioxide from the atmosphere would require planting 322 acres (1. 30 km2) of trees.