SCIENCE IS THE DISINTERESTED SEARCH FOR THE OBJECTIVE TRUTH ABOUT THE MATERIAL WORLD.

– Richard Dawkins

This post in our series  looks at how the integration of wind variability affects thermal activity on the grid, favors flexible natural gas generators, and influences economic dispatch and the spot market. It also examines how estimates of carbon emissions are derived and summarizes the limitations of statistically based knowledge. It concludes with a discussion of what Energy Information Administration (EIA) actually says about the causes of carbon emission reductions in the country over the last three years

It is true, as the American Wind Energy Association (AWEA) notes, that any wind production must displace some existing generation, but only in terms of electricity–not any of the underlying energy forms transposed into electricity. It is rather due to the stricture that supply match perfectly with demand at all times (and this is another oversimplification of a complicated situation).…

FACTS ARE STUBBORN, BUT STATISTICS ARE MORE PLIABLE

—Mark Twain

This section reviews the criticism the American Wind Energy Association (AWEA) makes about the Bentek report and the evidence the organization offers purporting to prove how wind reduced substantial greenhouse gas emissions in Texas and Colorado. The section concludes with an examination of what the EIA data really show for those states for 2007 versus 2008—and what the official Energy Information Administration (EIA) reports say about causal factors for any CO₂ reductions.

The Bentek study showed that wind volatility in the sampled regions of Colorado and Texas caused more CO₂ emissions than would have been the case with less wind and more efficient coal plants. Using mostly sub-hourly performance data, Bentek was able to “examine in detail how coal, gas and wind interact and the resulting emissions implications.”…

THE LESS ONE KNOWS ABOUT THE UNIVERSE, THE EASIER IT IS TO EXPLAIN

—Leon Brunschvicg

Have truth and consequences arrived for the biggest energy sham of all?

Energy journalist Robert Bryce recently broke the news to mainstream American media. In a hard-hitting article published in the Wall Street Journal, he reported the findings of a Colorado energy research study, which earlier this year concluded that the industrial wind technology it sampled in the regions of Colorado and Texas neither reduced carbon dioxide (CO₂) emissions in the production of electricity nor rolled back consumption of fossil fuels.

The raison d’être of the wind industry is to abate significant levels of the greenhouse gas emissions many feel are causing precipitous and adverse warming trends in the earth’s climate.…

This three-part series assesses utility-scale wind’s ability to provide reliable power, a necessary qualification for its use in electricity systems. After Part I’s introduction, Part II dealt with power density, where wind fails to meet today’s standards. This final part will look at the extension to power density, that is, capacity (power) value, which takes into account wind’s randomness and intermittency of supply. Again wind fails to qualify as industrial energy.

Electricity capacity is measured in power terms, for example MW. In this connection it is important to note the importance of the distinction that must be made between capacity factor, capacity credit and capacity value. Compared to capacity value, capacity credit and capacity factor are of small importance. Jon Boone has long called attention to this as follows:

“Modern society exists on a foundation built upon productivity that comes from reliable, controllable, interdependent high-powered machine systems.…