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SOLAR DAILY
Experts outline pathway for generating up to 10 terawatts of power from sunlight by 2030
by Staff Writers
Golden CO (SPX) Apr 26, 2017


File image.

The annual potential of solar energy far exceeds the world's energy consumption, but the goal of using the sun to provide a significant fraction of global electricity demand is far from being realized.

Scientists from the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), their counterparts from similar institutes in Japan and Germany, along with researchers at universities and industry, assessed the recent trajectory of photovoltaics and outlined a potential worldwide pathway to produce a significant portion of the world's electricity from solar power in the new Science paper, Terawatt-Scale Photovoltaics: Trajectories and Challenges.

Fifty-seven experts met in Germany in March 2016 for a gathering of the Global Alliance of Solar Energy Research Institutes (GA-SERI), where they discussed what policy initiatives and technology advances are needed to support significant expansion of solar power over the next couple of decades.

"When we came together, there was a consensus that the global PV industry is on a clear trajectory to reach the multi-terawatt scale over the next decade," said lead author Nancy Haegel, director of NREL's Materials Science Center.

"However, reaching the full potential for PV technology in the global energy economy will require continued advances in science and technology. Bringing the global research community together to solve challenges related to realizing this goal is a key step in that direction."

Photovoltaics (PV) generated about 1 percent of the total electricity produced globally in 2015 but also represented about 20 percent of new installation. The International Solar Alliance has set a target of having at least 3 terawatts - or 3,000 gigawatts (GW) - of additional solar power capacity by 2030, up from the current installed capacity of 71 GW.

But even the most optimistic projections have under-represented the actual deployment of PV over the last decade, and the GA-SERI paper discusses a realistic trajectory to install 5-10 terawatts of PV capacity by 2030.

Reaching that figure should be achievable through continued technology improvements and cost decreases, as well as the continuation of incentive programs to defray upfront costs of PV systems, according to the Science paper, which in addition to Haegel was co-authored by David Feldman, Robert Margolis, William Tumas, Gregory Wilson, Michael Woodhouse, and Sarah Kurtz of NREL.

GA-SERI's experts predict 5-10 terawatts of PV capacity could be in place by 2030 if these challenges can be overcome:

+ A continued reduction in the cost of PV while also improving the performance of solar modules

+ A drop in the cost of and time required to expand manufacturing and installation capacity

+ A move to more flexible grids that can handle high levels of PV through increased load shifting, energy storage, or transmission

+ An increase in demand for electricity by using more for transportation and heating or cooling

+ Continued progress in storage for energy generated by solar power.

Research paper: Terawatt-Scale Photovoltaics: Trajectories and Challenges.

SOLAR DAILY
Modeling reveals how policy affects adoption of solar energy photovoltaics in California
Washington DC (SPX) Apr 27, 2017
One key goal for renewable energy in the United States is to promote the continued adoption of solar photovoltaic (PV) systems to reduce greenhouse gas emissions and create a clean energy workforce. Federal and state governments are working to strengthen U.S. solar manufacturing to help reduce installation costs, for example. But successfully promoting green energy in the long run will req ... read more

Related Links
National Renewable Energy Laboratory
All About Solar Energy at SolarDaily.com


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