redOrbit: China Technology Development Group Corp and privately held Qinghai New Energy Group announced Friday their plans to construct a solar power plant in northwestern China that could become the world’s largest photovoltaic solar project. Shares of China Technology Development rose 29 percent to $2.61 on Nasdaq following the announcement. Shares of most solar power companies were also up on the news, bolstered by higher oil prices and an upswing in the broader market. Construction …