In a filing with the U.S. Securities and Exchange Commission, the company said President John Schaeffer would assume additional responsibilities.
Real Goods, which last month posted better-than-expected second-quarter results and forecast third-quarter revenue above analysts' estimates, said McCalmont will continue to serve on its board.
Shares of the company closed at $2.87 Friday on Nasdaq. The stock, which has doubled from a March year-low, is still off more than 50 percent from a November 2008 year-high. (Reporting by Adveith Nair in Bangalore)