On April 16 and 17, 23 energy ministers attended the 4th Clean Energy Ministerial meeting. Representatives from India pledged to increase the country’s renewable energy capacity to 55,000 megawatts by 2017; it currently stands at 25,000 megawatts. At the meeting, the International Energy Agency (IEA) released its Tracking Clean Energy Progress report. The report found that carbon dioxide emissions per unit of power have remained steady over the past two decades despite the recent renewable energy boom. In 1990, 2.39 metric tons of carbon dioxide was released per ton of oil-equivalent; in 2010, that measurement was at 2.37 metric tons. The report advocated for low-carbon energy technologies. The report also found that from 2011 to 2012 solar capacity grew globally by 42 percent and wind capacity grew 19 percent. Focusing on the U.S., the report said the shale gas revolution reduces greenhouse gas emissions in the short-term but is a regional phenomenon. Energy Secretary Steven Chu, who was in attendance at the meeting, said the revolution was both good and bad because it did pose the risk of increasing pollution in the water tables.