The timing no doubt was coincidence, but while Interior Secretary Sally Jewell was celebrating the country's largest solar project in California, two U.S. senators were introducing legislation to protect desert landscapes in the state.

The irony wasn't lost on the National Parks Conservation Association, which has questioned the location of the solar farm.

“There is a lot of celebrating today in the California desert. Senator Feinstein released the California Desert Conservation and Recreation Act and Sally Jewell flipped the on-switch at Desert Sunlight Solar plant. The confluence of these events highlights the important work that remains to be done in the California desert," said David Lamfrom, NPCA's California Desert associate director. "That includes permanently protecting some of the most beautiful and vibrant lands in America and the continued need to do a better job of siting renewable energy away from species-rich lands. Considering how important our national parks and protected lands are to our desert economy, finding this balance now is fundamental​.”

Earlier Monday, the Interior secretary and the director of the Bureau of Land Management Neil Kornze joined California state and industry leaders to “flip the switch” on the Desert Sunlight Solar Farm. Now operating at full capacity, the Desert Sunlight Solar Farm is providing 550 megawatts of electricity to the grid, enough energy to power 160,000 average homes. The facility is estimated to displace 300,000 tons of carbon dioxide per year – the equivalent to taking 60,000 cars off the road.

“Solar projects like Desert Sunlight are helping to create American jobs, develop domestic renewable energy and cut carbon pollution,” said Secretary Jewell. “I applaud the project proponents for their vision and entrepreneurial spirit to build this solar project and commend Governor Brown for implementing policies that take action on climate change and help move our nation toward a renewable energy future.”

Desert Sunlight is the sixth solar project approved on public lands that is now operational. Together with wind, solar and geothermal, the renewable energy projects built on public lands since 2009 are producing over 2,200 megawatts of power, or enough to power almost 700,000 average homes. An additional 2,500 megawatts is currently under construction, including eight solar projects in California and Nevada.

Desert Sunlight is located on about 4,100 acres managed by the BLM in Riverside County, about 70 miles east of Palm Springs and six miles north of the rural community of Desert Center. The facility uses more than eight million First Solar photovoltaic modules to generate power with no air emissions, no waste production and no water use. The thin film technology has the smallest carbon footprint of any photovoltaic technology. The renewable energy is sold to Pacific Gas & Electric Company and Southern California Edison under long-term contracts.

As part of the Interior Department’s commitment to responsible development of renewable energy, the Desert Sunlight project underwent extensive environmental review and mitigation. The BLM worked in close coordination with Desert Sunlight, the National Park Service and other stakeholders to significantly reduce the proposed project’s total footprint down from the proposed 19,000 acres. The BLM is requiring that Desert Sunlight provide funding for acquisition and enhancement of more than 7,500 acres of suitable habitat for desert tortoise and other sensitive wildlife species to help mitigate the project’s potential impacts.

Also on Monday, Sens. Dianne Feinstein and Barbara Boxer, both California Democrats, introduced legislation that would expand by 75,000 acres the Mojave National Preserve and Death Valley and Joshua Tree national parks.

“This piece of legislation is the final chapter in a long effort to preserve one of the most magnificent landscapes in the United States,” Sen. Feinstein said. “We must ensure that critical parts of the California desert—with its mountain vistas, bighorn sheep, mule deer, desert tortoises, Joshua trees, Native American petroglyphs and much more—will be protected for all time.”