The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
6 Reasons Why Nuke Fan Is Dead Wrong About Wind Energy
By Michael Goggin
The Energy Collective blog recently carried a column, Limitations of Unreliable Energy Sources, aka ‘Renewables,’ by Rod Adams, a longtime nuclear power advocate and critic of competing energy sources. In his column, Adams repeats a number of false statements about wind power.
Wind energy significantly reduces carbon emissions and does not noticeably reduce the efficiency of fossil-fired power plants on the utility system.
Recent analysis of the impact of wind on the efficiency of fossil-fired power plants found that with renewable energy supplying 33 percent of the electricity, wind produces 99.8 percent of the expected fuel use and carbon dioxide (CO2) emissions savings after accounting for all cycling impacts, or savings of 1,190 pounds of CO2 per megawatt hour (MWh) of wind. This analysis is based on real-world hourly emissions data for all fossil-fired power plants in the Western U.S, and puts to rest the fossil fuel industry myth that wind energy’s emissions savings are lower than expected.
Transmission pays for itself through economic and reliability benefits.
Numerous studies show that grid upgrades more than pay for themselves through the reliability and economic benefits they provide to consumers. The claim that a significant amount of wind energy is lost in transmission to consumers is false, as almost all line losses occur on low-voltage distribution lines, and thus apply to all energy sources evenly (page 30).
Wind energy has a lower integration cost than large conventional power plants.
Every wind integration study has found that there is more than enough flexibility on the power system today to accommodate very high levels of wind energy. In contrast, the need for reserves to accommodate the sudden failure of conventional power plants is far larger and many times more costly than for wind (see calculations in footnotes 6 and 7). Adding wind energy to the grid does not cause any need for new power plant capacity, and actually significantly reduces the total need for power plants.
Wind energy curtailment has only occurred due to localized transmission constraints (that are being eliminated), and never because the amount of wind output exceeded total demand on the power system.
Even the curtailment caused by localized transmission congestion is being eliminated as long-needed grid upgrades catch up with wind energy’s rapid growth, with curtailment cut in half from 2011 to 2012. (see page 44) Further declines are occurring in 2013, with curtailment on the ERCOT (Electric Reliability Council of Texas) system now approaching zero.
Onsite energy use is far higher at conventional power plants, on the order of 7 to 15 percent of power plant energy production.
In contrast, the figure for wind plants is typically far less than 1 percent. A comprehensive literature review of all peer-reviewed studies on the lifecycle carbon emissions impacts of all energy sources demonstrates that wind’s impact is a fraction of all conventional energy sources, and is also much lower than most other renewable energy sources.
Energy storage is not needed for wind energy.
The U.S. has added 60 gigawatts (GW) of wind, and Europe even more, with zero need to add energy storage. As explained above, there is plenty of flexibility on the existing power system. Interestingly, nearly all of the 22 GW of pumped hydro energy storage in the U.S. was added to help accommodate the inflexibility and additional reserve needs imposed by large nuclear power plants.
Finally, it seems strange to talk about the efficiency of different energy sources without discussing the fact that most fossil and nuclear power plants immediately waste 2/3 of the energy in their fuel as waste heat at the power plant, while most modern wind turbines capture around 50 percent of the energy available in their fuel. The U.S. Department of Energy’s data on the average efficiency of different types of power plants is here:
- Coal: 32.7 percent efficiency
- Gas: 41.9 percent efficiency
- Nuclear: 32.6 percent efficiency
Visit EcoWatch’s RENEWABLES page for more related news on this topic.
EcoWatch Daily Newsletter
By Bijal Trivedi
The Centers for Disease Control and Prevention (CDC) released a report on Nov. 13 that describes a list of microorganisms that have become resistant to antibiotics and pose a serious threat to public health. Each year these so-called superbugs cause more than 2.8 million infections in the U.S. and kill more than 35,000 people.
By Joe Vukovich
Under the guise of responding to consumer complaints that today's energy- and water-efficient dishwashers take too long, the Department of Energy has proposed creating a new class of dishwashers that wouldn't be subject to any water or energy efficiency standards at all. The move would not only undermine three decades of progress for consumers and the environment, it is based on serious distortions of fact regarding today's dishwashers.
By Emily Moran
If you have oak trees in your neighborhood, perhaps you've noticed that some years the ground is carpeted with their acorns, and some years there are hardly any. Biologists call this pattern, in which all the oak trees for miles around make either lots of acorns or almost none, "masting."
By Catherine Davidson
Tashi Yudon peeks out from behind a net curtain at the rooftops below and lets out a sigh, her breath frosting on the windowpane in front of her.
Some 700 kilometers away in the capital city Delhi, temperatures have yet to dip below 25 degrees Celsius, but in Spiti there is already an atmosphere of impatient expectation as winter settles over the valley.