On April 25, the International Energy Agency released Tracking Clean Energy Progress, a report arguing for aggressive deployment of renewable energy technology to stave off climate change, with several policy recommendations on decreasing the clean technology commercialization timeframe. The report found that, over the last decade, solar energy deployment has grown an average of 42% annually across the 28 IEA countries - with system costs dropping by 75% in the last three years - while onshore wind has grown an average of 27% in the same ten-year time frame. Half of all coal plants in the member countries are built with outdated technology, because carbon-capture and sequestration lacks enough investment to determine commercial-scale feasibility.