The World's #1 Renewable Energy Network for News, Information, and Companies.
Untitled Document

The Limits of Renewable Energy: A Call for Research and Development

We're losing the race against global warming. Worldwide coal production increased about eight times faster than solar- and wind-power generation last year. China added more new coal plants in 2011 than are running in Texas and Ohio, even as it leads the world in wind-power capacity. Meanwhile, the United States is only modestly cutting carbon emissions by transitioning from coal to natural gas, which is still a carbon-rich fuel.

Despite these trends, conventional wisdom holds that a “clean-energy future” is not only possible but looming. Through a combination of energy efficiency and renewable technologies, some argue, we can “solve” the problem of climate change.

The case for “we’ve got all the renewables we need” recently received a boost from aNational Renewable Energy Laboratory (NREL) study, which concluded: “Renewable electricity generation from technologies that are commercially available today, in combination with a more flexible electric system, is more than adequate to supply 80% of total U.S. electricity generation in 2050 while meeting electricity demand on an hourly basis in every region of the country.” Physicist Amory Lovins, a leading advocate of green energy, was among those praising the study. It showed “how to produce 80 to 90 percent of America’s electricity from proven, reliable and increasingly competitive renewable sources like the sun and wind,” he said.

Yet on close reading, the study not only doesn’t support these optimistic claims, it also reveals the need for a more diverse technology strategy and aggressive investments in innovation.

For starters, the study doesn’t find that wind and solar can, even theoretically, supply 80 to 90 percent of U.S. power by 2050. In the best case, less than half would come from wind and sun. The remaining balance of renewable power would come from newhydropower, equivalent to adding 50 Hoover-size dams and building biomass plants equal in capacity to the U.S. nuclear fleet; the biomass plants are unlikely to be carbon-neutral.

Even achieving the goal of 50 percent of the U.S. power supply from solar and wind assumes that 100 to 150 gigawatts of energy storage, or roughly half the size of the country’s coal capacity, will emerge to provide power when the sun isn’t shining and the wind isn’t blowing. While pumped hydro-storage is available in some locations today, other technology options, such as very large batteries and compressed air, require significantly more innovation to become cost- effective at commercial scale.

In fact, the study’s storage estimate may be low, because it assumes that the number of residences and businesses that will go offline at peak times when wind and solar aren’t available are equivalent to 1½ New York states. It also assumes no growth in U.S. electric consumption for the next 40 years, thanks to improvement in energy efficiency. Consider that California’s energy-efficiency efforts lead the world — but demand has still increased 25 percent in the Golden State in the past 20 years.

Furthermore, to meet the goal of having 50 percent of the U.S. power supply come from solar and wind sources, the study presumes a doubling of the U.S. transmission system that is simply not feasible. Nearly every mile of new U.S. transmission lines is fought over by the localities they run through. And the report is mum on what happens to electricity reliability or consumer costs if more than one of these assumptions fails to materialize.

Simply put: Far from a realistic plan, the NREL study suggests what might be possible in an ideal world. The authors even admit that although their analysis suggests “a high renewable generation future is possible, a transformation of the electricity system would need to occur. . . involving every element of the grid.”

Certainly, better efficiency and increased wind and solar power will be among the ways to address global warming. But placing all of our bets on today’s renewable technologies is unwise. A more sensible approach would be to invest in improving the performance and cost of a broad range of zero-carbon technologies through innovation, including better and cheaper wind and solar power as well as energy storage.

We must also be realistic about fossil fuels, which provide 87 percent of the planet’s energy and aren’t disappearing anytime soon. The United States needs to bring commercially proven carbon capture and storage to scale and reduce its cost. It also would be prudent to explore cheaper next-generation nuclear technologies that offer better safety, waste and security options than the Fukushima-type light-water designs that were locked in during the Eisenhower administration.

The real lesson of the NREL study is that much more innovation is necessary to achieve deep and affordable carbon reductions. Yet almost all of the policy and funding today focuses on deploying current technologies. U.S. investment in energy innovation is less than 5 percent of federal spending on defense research and demonstration. That has to change. We need better, cheaper options if the grid is to produce less carbon.

Matthew Stepp is a senior policy analyst at the nonpartisan Information Technology & Innovation Foundation.

This article was originally published on the Washington Post and was republished with permission.

Lead image: Road ends sign via Shutterstock

Untitled Document

RELATED ARTICLES

Global Renewable Energy Roundup: China, Kenya, Turkey, India Seeking More Renewables

Bloomberg News Editors China is being encouraged by three industry groups to double the nation’s solar-power goal for 2020 to make up for sh...

Why Smarter Grids Demand Smarter Communications Networks

Mark Madden

Historically, utility networks and communications networks have had little in common.

Don’t Like Obama’s Clean Power Plan? Fine, Here’s Cap and Trade

Mark Drajem and Lynn Doan, Bloomberg Republican governors who boycott the Obama administration’s new power-plant regulations may instead get an offer they...

Vehicle to Grid Energy Storage Experiment Underway in California

Dana Hull, Bloomberg In a new pilot program, a California utility is paying drivers of BMW electric cars to delay charging their vehicles ...

PRESS RELEASES

Array Technologies’ DuraTrack HZ v3 Continues to (R)evolutionize at SPI

Array Technologies, Inc. (ATI) prepares to showcase its recently launched tracking syst...

Appalachian's Energy Center assists counties with landfill gas to energy projects

The Appalachian Energy Center at Appalachian State University recently completed a proj...

Redesigned HydroWorld.com Video Gallery

Hydropower news and information, and interesting promotional announcements are now avai...

30 days to GRC Annual Meeting & GEA Geothermal Energy Expo

The Geothermal Resources Council (GRC) has announced that it is only 30 days to go to t...

FEATURED BLOGS

Transitioning to Net-Zero Living

Judith and Jeffrey adore living in Belfast, Maine – a quaint harbor town of Belfast, Maine. They previously res...

The True Cost of Electric Vehicles in Australia

In order to avoid increased congestion, further greenhouse warming and lessen Australia’s reliance on imported ...

The Coming Multi-trillion Dollar Energy Investment Drive

In coming years, a multi-trillion dollar low-emission energy investment drive will get underway. Three catalysts wil...

The Perfect Elevator Pitch

The elevator pitch is a concise statement that grabs attention and communicates value, ideally leading to a next step...

FINANCIAL NEWS

CURRENT MAGAZINE ISSUE

Volume 18, Issue 4
1507REW_C11

STAY CONNECTED

To register for our free
e-Newsletters, subscribe today:

SOCIAL ACTIVITY

Tweet the Editors! @jennrunyon

FEATURED PARTNERS



EVENTS

Doing Business in South Africa – in partnership with GWEC, the Glob...

Wind Energy in South Africa has been expanding dramatically, growing fro...

ees Europe 2016

Exhibition: June 22-24, 2016; Conference: June 21-22, 2016 ees Europe 20...

Intersolar Europe 2016

Exhibition: June 22-24, 2016; Conference: June 21-22, 2016 Intersolar Eu...

COMPANY BLOGS

Less Is More

When you’re giving a presentation, one of the easiest things to do...

Captivology

One of the biggest challenges we face as efficiency sales professionals ...

How To Optimize Your Meeting Schedule

Do you spend more time in meetings than you do actually working? While m...

NEWSLETTERS

Renewable Energy: Subscribe Now

Solar Energy: Subscribe Now

Wind Energy: Subscribe Now

Geothermal Energy: Subscribe Now

Bioenergy: Subscribe Now  

 

FEATURED PARTNERS