Existing dams could be retooled to increase their efficiency and limit their environmental impact. Other options include developing small-scale hydro- power in Vietnam and solar power in Vietnam and Thailand. In fact, according to a recent study by the International Center for Environmental Management, an NGO, developing a thoughtful combination of renewables could supply several times as much energy by 2025 as the amount expected to be generated by the proposed dams. And improving energy efficiency and implementing conservation measures — say, to cut electricity consumption in large commercial buildings throughout Thailand — could mean substantial savings and help curb demand.