Renewable Projects Get a Second Wind
Renewable energy, particularly wind, has been the fastest growing electricity-generating technology in the past five years or so. Environmentalists and advocates for technologies to displace fossil fuels have long pushed wind and other renewables (but not politically incorrect hydro) as the answer to the question of how to cut U.S. greenhouse gas emissions while ensuring low-cost electricity (Figure 4).

4. Renewables are a growth industry. Renewable energy contributed 7% of total U.S. energy demand (and 8.4% of total U.S. electricity generation) in 2007, the last full year data is available from the EIA. The sum of components may not equal 100% due to independent rounding Source: Energy Information Administration
According to the American Wind Energy Association, the wind industry installed 1,389 MW of nameplate capacity in the third quarter of 2008, "bringing to 4,204 MW the total of wind power projects completed in what is expected to be another record year." With congressional wind production credits once again renewed (as part of the $700 billion bank bailout), 2009 looks to be another good year for wind.
But there’s a downside. Congress renewed the tax credits for another year only. That sets up a battle in the new Congress and creates uncertainty on the part of investors in renewable energy projects, which are mostly wind projects. It also reflects a concern that wind and solar, which drive up overall electricity prices, aren’t an economically sustainable answer to the need for new generation (see sidebar, "Wind Power Goes Mainstream").
The exponential growth in wind capacity seen in the U.S. comes from a tiny base, and wind remains a miniscule contributor to U.S. electricity supplies. The claims of wind and solar advocates that renewables can effectively replace baseload or even peak generation are overblown, according to many experts. Wind and solar are not dependable replacements for fossil-fueled generation, according to these critics.
A recent article by Carnegie Mellon University researchers Jay Apt, Lester B. Lave, and graduate student Sompop Pattanariynkool, in Issues in Science and Technology, lays out a powerful critique of renewables in general and the specific trend toward state (and potentially federal) renewable portfolio mandates. The summary of "A National Renewable Portfolio Standard? Not Practical," states, "Legislation that mandates specific electricity production from renewable sources paves a path to costly mistakes because it excludes other sources that can meet the country’s goals."
Renewable energy, say the article’s authors, "seems to addle the brains of many sensible people, leading them to propose policies that are bad engineering and science or have a foundation in a yearning for utopia."
A national renewable generating mandate, a goal of the incoming administration in Washington, they argue, is a bad idea for three reasons. First, "renewable" and "low greenhouse gas emissions" are not synonymous, as "there are several other practical and often less expensive ways to generate electricity with low CO 2 emissions." This is a veiled reference to "generating" what’s known as "negawatts" (a term coined by Amory Lovins) through energy conservation and energy efficiency. In fact, some utilities are negotiating with their regulators to add energy conservation project investments (such as projects that subsidize the replacement of older refrigerators with Energy Star models) to their rate base in order to earn a guaranteed rate of return. Whether regulators will put investments that promote end user conservation on the same footing as major generation construction projects remains to be seen.
Also, locations for wind and solar generation are generally far from the loads they must supply, leading to "unpopular and expensive transmission lines" to move the power to the market. Transmission lines that cross states but confer no local benefits have historically drawn intense opposition.
Finally, the Carnegie Mellon team argues, because it’s unlikely developers would build the needed transmission lines, a national market to allocate carbon reductions through trading would mean supply disruptions and cascading grid blackouts. "Renewable energy resources," says the report, "are a key part of the nation’s future, but wishful thinking does not provide an adequate foundation for public policy." A national renewable portfolio standard, says the report, "could cause a backlash that might doom renewable energy even in the areas where it is abundant and economical."
FBR Capital Markets analyst Kevin Book predicts that the 111th Congress, probably in 2010, will approve some form of carbon dioxide regulation. The legislation, he told reporters recently, will be enacted not because the carbon restraint will change behavior. Rather, he argued, it will be enacted because the regulation — cap-and-trade, carbon tax, or whatever one choose to call the surcharge on fossil-fueled energy — will be a way for the federal government to raise money. It will be, in short, a new tax.
What do all these indicators mean for U.S. electricity supply? As in the recent past, it looks as if the industry will continue muddling through. It may see advancement in infrastructure investment, significant new generation, or new technology development. But it also faces the possibility that the policies necessary to achieving those goals will not materialize, for political and economic reasons. In the words of the 1970s disco group the Bee Gees, in the splendid film Saturday Night Fever, it’s likely to be a case of "Stayin’ alive, stayin’ alive."