5 August 2013 – The global use of solar and wind energy grew significantly in 2012. Solar power consumption increased by 58% to 93 terrawatt-hours (TWh), and the use of wind power increased by 18% to 521 TWh. Although hydropower remains the world’s leading renewable energy, solar and wind continue to dominate investment in new renewable capacity and are quickly becoming the highest-profile renewable energy sources says the Worldwatch Institute in a recent report.
Global solar and wind energy capacities continued to grow even though new investments in these energy sources declined during 2012. Global investment in solar energy in 2012 was US$140.4 billion, an 11% decline from 2011, and wind investment was down 10%, to US$80.3 billion. But due to lower costs for both technologies, total installed capacities grew sharply.
Solar photovoltaic (PV) installed capacity grew by 41% in 2012, reaching 100 GW. Over the past five years alone, installed PV capacity grew by 900% from 10 GW in 2007. The countries with the most installed PV capacity today are Germany (32.4 GW), Italy (16.4 GW), the United States (7.2 GW), and China (7.0 GW).
Europe remains dominant in solar, accounting for 76% of global solar power use in 2012. Germany alone accounted for 30% of the world’s solar power consumption, and Italy added the third most capacity of any country in 2012 (3.4 GW). Spain added the most concentrating solar thermal power capacity (950 MW) in 2012 as well. However, Italy reached the subsidy cap for its feed-in tariff (FIT) program in June 2013 while Spain recently made a retroactive change in its FIT policies, meaning growth in solar energy will likely slow in these countries in the near future.
Due to slowing global economic growth, easing demand, and oversupply, there were significant net losses in the Chinese PV industry, which supplies more than half of the world market. The net losses have been exacerbated by growing trade wars between China and both the European Union (EU) and the United States after these regions accused Chinese companies of dumping solar panels on their markets. Meanwhile, China’s domestic demand is likely to grow. The country’s 12th Five-Year Plan aims to reach 21 GW installed solar capacity by 2015 and 50 GW by 2020.
Total installed wind capacity edged up in 2012 by 45 GW to a total of 284 GW, an 18.9% increase from 2011. In keeping with recent years, the majority of new installed capacity was concentrated in China and the United States, which reached total installed capacities of 75.3 GW and 60 GW, respectively.
The United States was the world’s top wind market in 2012. Overall capacity increased 28% as the country added 13.1 GW, double the amount it added in 2011. Increased domestic manufacturing of wind turbine parts, improved technological efficiency, and lower costs helped spur this increase, but the greatest catalyst was the threat of expiration of the federal Production Tax Credit (PTC), which provides tax credits for kilowatt-hours produced by wind turbines, at the end of 2012.
A slowdown was originally expected in 2013, but the US Congress extended the PTC until the end of the year, which bodes well for many US and European wind turbine and parts manufacturers that benefit from it.
The EU remained a dominant region for wind power, as it passed an important milestone by installing 11.9 GW of new capacity to reach 106 GW, representing 37.5% of the world’s market. Currently, wind accounts for 11.4% of the EU’s total installed generation capacity. Germany and Spain remained Europe’s largest wind markets, increasing their total installed capacity to 31.3 GW and 22.8 GW, respectively. The United Kingdom was third in new installations in 2012, at 1.9 GW, followed by Italy with 1.3 GW.
"Although policy uncertainties and changes will likely challenge the growth of solar and wind in the future, these technologies are nonetheless well poised to grow," Matt Lucky, report co-author and sustainable energy lead researcher at Worldwatch, says. "Declining solar technology prices, while challenging for current manufacturers, are helping solar to reach near grid-parity in many markets. With the decreasing cost of operating and maintaining wind farms, wind power is already cost competitive with conventional power energy sources in many markets."
Further highlights from the recent Worldwatch report on wind and solar energy production are that in 2012, installed capacity for concentrating solar thermal power (CSP) reached 2.55 GW, with 970 MW added in 2012 alone. The Asia-Pacific region now accounts for 17% of global solar use, leaving it behind only Europe. Asia’s 15.5 GW of new installed wind capacity, the highest of any region in 2012, ensured that it remains on the heels of the EU. Political instability continued to slow growth in Africa and the Middle East, but solar and wind energy installed capacity grew by 9.3% in 2012 compared with 2011’s rate of 2.6%.