1) 2050
2) 2040
3) 2030
4) 2020
Explanation:
According to a “New Energy Outlook (NEO) report 2019 ”released by Bloomberg NEF, Wind and solar power are the new power in two-thirds of countries around the world and they will make up almost half of the electricity system by 2050.The electricity demand set to increase 62 percent, which in turn will attract $13.3 trillion in new investment, of which wind will take $5.3 trillion and solar will take $4.2 trillion.It forecasts that many nations can cut power sector emissions through 2030 in line with goals set in Paris climate agreement, to limit the increase in world temperatures to 2 degrees Celsius.