The OECD/IEA 2015 report highlights significant growth in renewable energy, forecasting renewables to become the dominant source of electricity globally while emphasizing the need for policy stability. It notes that non-hydro renewables now account for almost half of new global power capacity additions, with emerging markets driving growth. The report discusses challenges in reaching climate goals, particularly in the heat and transport sectors, while recognizing the importance of supportive regulations and competitive market structures.