 
 <prompt> Wetin Pacala dey study? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: "The reason wey dey make pipo use 100% renewable energy, for electricity, transport, or even total primary energy supply globally, na because of global warming and other ecological as well as economic concerns. The Intergovernmental Panel on Climate Change don talk say no be technology dey limit us from integrating different renewable energy technologies to meet most of global energy demand. As dem review 164 recent scenarios of future renewable energy growth, the report talk say majority dey expect say renewable sources go supply more than 17% of total energy by 2030, and 27% by 2050; the highest forecast talk say 43% go dey supplied by renewables by 2030 and 77% by 2050. Renewable energy use don grow pass wetin even advocates bin expect. For national level, at least 30 nations around the world don already get renewable energy wey dey contribute more than 20% of energy supply. Also, Professors S. Pacala and Robert H. Socolow don develop series of "stabilization wedges" wey fit help us maintain our quality of life while we dey avoid catastrophic climate change, and "renewable energy sources," as a whole, na the largest number of their "wedges." " 