The state’s energy and environmental affairs secretary, Ian Bowles, wants more energy-saving features to be built into the Wal-Mart and Lowe’s stores planned for Salem. Citing the ambitious environmental goals that have been embraced nationwide by Wal-Mart Stores Inc. and Lowe’s Home Improvement, Bowles said he was disappointed that plans for the Salem stores - detailed in documents filed with the state - did not include provisions for solar power and other energy-saving measures the companies have used in other states. Bowles conveyed that disappointment last week as he denied a request to allow the companies to file only a...