单项选择题

Taking a Dim View of Solar Energy
Despite the bad economy, or maybe because of it, the rooftop-solar industry is booming, as Americans become increasingly intrigued by the idea of turning their roofs into mini power plants and cutting their electric bills. In 2008,33,500 rooftop solar systems were installed in the United States, a 63 percent increase over the amount of capacity installed in 2007. In California. the solar capital of country, the increase was 95 percent.
Meanwhile, the outlook for the other side of the solar industry—the large, centralized power plants—isn’t so sunny. These megaprojects—acres of desert covered in thousands of solar panels sending electricity—controlled mostly by utility companies that have had a monopoly over the country’s electricity grid, were supposed to be the key to the future of the solar industry. So far, they’re getting vastly outpaced by the decentralized rooftop approach. According to the Interstate Renewable Energy Council’s 2006—08 count, consumers added 522 megawatts to the grid: whereas utility companies added just 96 megawatts.
The disparity has utilities worried about loosing their grip on the country’s energy industry, and the $130 billion residential electricity market. In some cases, utilities are actually taking direct steps to thwart rooftop solar.
"There is a tension between distributed solar generation and utilities," says Adaln Browning, executive director of The Vote Solar initiative, a solar advocacy group in San Francisco. They’ve had the energy pie to themselves for a century, and now facing a future where clean distributed energy will play a large part, they’re looking for ways to profit from it and maintain control. People want solar panels on their roofs, so utilities should be working to make that happen rather than getting in the way. "says Browning. "
"It’s not hard to understand why a big utility might not like the idea of homes and buildings being covered in solar panels. If every building in America is generating its own solar energy, that throws a big wrench into their business model. But as most states have passed renewable-energy standards recently, mandating that a certain percentage of their energy come from renewable sources, utilities have become reluctant players in the solar game because, frankly, they have no choice. However, thanks to state and federal government subsidies, private sector can seize this opportunity to grow.
According to the passage, which one of the following statemets can not be inferred from the passage