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New Research Confirms Wind Energy Decreases Emissions and Electricity Costs
By Michael Goggin
New research released by an independent grid operator confirms that wind energy is drastically decreasing both the price of electricity and emissions of harmful pollutants. The study was led by PJM, the independent grid operator for all or parts of 13 Mid-Atlantic and Great Lakes states (Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia) and DC. The results are posted here.
PJM, the independent grid operator for all or parts of 13 states, released a study this week showing that wind energy is decreasing electricity costs and emissions. Photo courtesy of Shutterstock
Highlights of the study:
- Wind energy produces massive reductions in electricity production costs and wholesale prices. Obtaining 20 percent of PJM’s electricity from wind energy reduces the cost of producing electricity by $9 billion annually (about 25 percent of overall production costs of $37 billion), while 30 percent wind reduces production costs by $13 billion (about 35 percent) each year. Wholesale electricity prices are reduced by $9-21 billion annually across the 20 percent and 30 scenarios.
- Wind energy drastically reduces pollution. The 20 percent wind case reduced fuel use and carbon pollution by 18 percent more than the 2 percent wind base case, while 30 percent wind reduced fuel use and carbon emissions by more than 29 percent relative to the 2 percent wind base case. The 20 percent wind case reduced annual carbon pollution by around 80 million tons, while the 30 percent wind cases reduced pollution by around 140-200 million tons annually. These results include detailed modeling of how changing the output of fossil-fired power plants affects their emissions and efficiency. Even at high levels of wind energy, this power plant "cycling" has no significant negative impact on the efficiency or emissions of fossil-fired power plants, further confirming the results of a study released last month showing that such cycling only reduces the CO2 benefits of wind by 0.2 percent.
- The study found that obtaining 30 percent of electricity from renewable energy would cause no reliability problems, noting that “all the simulations of challenging days revealed successful operation of the PJM real-time market.” This confirms the results of dozens of other wind integration studies and independent grid operator analyses of real-world wind operations data. As PJM’s Senior Vice President Andy Ott and other experts explain in this video, changes in wind energy output are reliably accommodated using the same tools grid operators have always used to accommodate fluctuations in electricity demand as well as abrupt failures at conventional power plants.
- The PJM study also found that the grid upgrades needed to accommodate additional wind energy would have a reasonable cost, accounting for only 6 to 8 percent of the value provided by wind energy in nearly all scenarios. Importantly, other studies by independent grid operators have confirmed that these grid upgrades would more than pay for themselves by providing other benefits, such as improved electric reliability, reduced electricity prices, more competitive electricity markets, and higher efficiency of electricity transmission relative to today’s congested electric grid.
EcoWatch Daily Newsletter
By Jared Kaufman
Eating a better diet has been linked with lower levels of heart disease, stroke and type 2 diabetes. But unfortunately 821 million people — about 1 in 9 worldwide — face hunger, and roughly 2 billion people worldwide are overweight or obese, according to the U.N. World Health Organization. In addition, food insecurity is associated with even higher health care costs in the U.S., particularly among older people. To help direct worldwide focus toward solving these issues, the U.N. Sustainable Development Goals call for the elimination of hunger, food insecurity and undernutrition by 2030.
mevans / E+ / Getty Images
Calls for Radical Climate Action Grow Louder as NOAA Reports Last Month Was Hottest June Ever Recorded
By Jessica Corbett
As meteorologists warned Thursday that temperatures above 100°F are expected to impact two-thirds of the country this weekend, U.S. government scientists revealed that last month was the hottest June ever recorded — bolstering calls for radical global action on the climate emergency.
By John R. Platt
For years now conservationists have warned that many of Madagascar's iconic lemur species face the risk of extinction due to rampant deforestation, the illegal pet trade and the emerging market for the primates' meat.
Yes, people eat lemurs, and the reasons they do aren't exactly what we might expect.