Solar PV dominated as the main new power-generating technology source added to grids in dozens of countries ranging from Australia, to India, Italy, Namibia, Uruguay and the U.S. in 2019. With a record 118 gigawatts constructed, PV topped all other technologies in new-build terms and was the most popular technology deployed in a third of nations, according to complete and proprietary data compiled by research company BloombergNEF (BNEF).
In all, 81 countries built at least 1 megawatt of solar during the last calendar year and solar accounted for nearly half of all new power generation capacity constructed worldwide. The findings are highlighted in BNEF’s new Power Transition Trends 2020 report.
The report highlights the enormous strides solar has made in a decade, rising from just 43.7GW of total capacity installed in 2010 to 651GW as of year-end 2019. Solar in 2019 also moved past wind (644GW) to become the fourth largest source of power on a capacity basis, behind coal (2,089GW), gas (1,812GW), and hydro (1,160GW). There is now more wind and solar capacity online worldwide than total capacity from all technologies, clean or dirty, in the U.S.
On a generation basis, solar’s contributions are considerably smaller due to PV’s lower capacity factors compared to fossil fuels. In 2019, solar accounted for 2.7% of electricity generated worldwide, BNEF found, up from 0.16% a decade ago. Given the inexpensive nature of the technology and the limited penetration on a generation basis, BNEF expects the market to continue to grow, with 140-178GW of new solar to be built in 2022.
The data offer other important insights on how the world is generating electricity. From 2018 to 2019, power produced from coal dropped 3% as plants ran less frequently. This marked the first fall in coal generation since 2014-2015 and while the world has far more coal plants online today than a decade ago, those plants are running less often. The average utilization rate at coal-fired power plants has dropped from 57% in 2010 to 50% in 2019. Still, the 9,200 terawatt-hours (TWh) produced from coal in 2019 was up 17% from 2010.
Global coal capacity surged 32% over the decade to reach 2.1TW in 2019. Over 113GW of net coal retirements in developed nations during the 2010s could not offset the 691GW flood of net new coal in emerging markets. In 2019, the world saw 39GW of net new coal capacity installed, up significantly from 2018 when 19GW of coal was completed.
Other findings from the new data include:
- Wind and solar accounted for over two-thirds of the 265GW of new capacity installed worldwide in 2019, up from less than a quarter of new build in 2010. For the first time, the two technologies also accounted for the majority of new generation recorded in 2019. Including hydro power, renewables made up three-fourths of 2019 commissioned capacity.
- Wind and solar build was mostly concentrated in wealthier nations during the first half of the 2010s but that has shifted recently. In a group that includes nearly all OECD nations, wind and solar have accounted for the majority of new capacity built each year since 2011. Among a group of non-OECD nations plus Chile, Colombia, Mexico and Turkey, wind and solar have accounted for the majority of annual build each year since 2016.
- BNEF estimates that global power sector CO2 emissions slipped 1.5% 2018-2019 as declines in the U.S. and EU more than offset an increase from China, which accounted for 37% of the 2019 total. The U.S. followed with 14% and the EU with 6%.