How Clean Is Obama's Clean Energy Standard?

Wednesday, 26 Jan 2011 06:26 PM

 

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NEW YORK (AP) — President Obama wants 80 percent of the nation's electricity to come from clean energy sources by 2035. Achieving this, he says, will take a mix of solar, wind, nuclear, and even fossil fuels like natural gas and coal.

It may also take a liberal definition of "clean."

Obama's plan is to force the generation of electricity from coal and natural gas, which together account for 70 percent of the nation's fuel mix, to get cleaner. At the same time the government would spur the growth of nuclear power and renewables like wind and solar.

The president also pointed to biofuels as a way to "break our dependence on oil" and predicted the country would have one million electric vehicles on the road by 2015.

But what exactly will be considered clean or dirty is not yet known. The answers will depend on whether the concern is greenhouse gases like carbon dioxide or hazardous chemicals like mercury and sulfur dioxide, or, most likely, some combination of both.

It will also depend on whether the environmental hazards caused by mining coal or uranium, drilling for gas or plowing new fields to grow biofuel crops will be considered along with the hazards of burning them for power.

How "clean" is ultimately defined by the administration and congress will determine how the nation's energy mix changes over the coming decades — if at all.

The White House says the U.S. now gets 40 percent of its electricity from the sources it considers clean.

Obama's vision calls for increasing amounts of clean power to be added to the nation's energy mix over the next quarter century. His "clean energy standard" differs from renewable energy standards adopted by many states by making room for nuclear power and fossil fuels like coal and natural gas.

Under the plan, nuclear and renewable sources would count toward federal clean energy requirements while what Obama calls "efficient natural gas" and "clean coal" would get partial credit toward the requirements.

"If your objective is to minimize emissions of greenhouse gases or emissions of other pollutants, a clean energy standard makes more sense than a renewable energy standard," says Hugh Wynne, an analyst at Sanford C. Bernstein & Co. "You are focused on an objective as opposed to pushing one solution."

The standard could lead to what Christine Tezak, an energy policy analyst at RW Baird, calls a "significant shift" in the nation's energy portfolio.

Here's what Obama's plan could mean for today's energy sources:

—Coal

Coal accounts for 45 percent of the nation's electricity generation — but 81 percent of the carbon dioxide emissions and 94 percent of the emissions of sulfur dioxide.

To meet the President's goal, conventional coal generation must be cut by more than half. Some companies aim to capture carbon dioxide and storing it underground, but this so-called clean coal technology is proving extremely difficult and expensive to do on a large scale.

The cost of a pilot plant being built in Indiana by Duke Energy has risen to $3 billion from $2 billion since it was proposed in 2007.

—Natural Gas

Burning natural gas produces about half of the carbon dioxide of coal, and almost none of the hazardous chemicals. It is also now plentiful in the United States, as a result of new drilling techniques and discoveries.

Those drilling techniques are raising some environmental concerns, but given its availability and cost, natural gas power will almost certainly grow from its 23 percent share of today's mix.

—Nuclear

The nation's 104 nuclear reactors provide about 20 percent of the nation's electricity, and at extremely low cost.

Generating nuclear power produces no carbon dioxide. But mining for uranium does, and there is still no long-term plan for storing the radioactive waste produced by a nuclear reactor.

And the cost of a new reactor is prohibitive. Even companies in line for federal loan guarantees to build one are shying away because of the cost.

New nuclear plants could more viable if Obama's clean energy standard forces utilities to use power that doesn't emit carbon dioxide.

—Wind and Solar

Wind energy produces about 2 percent of the nation's power. With current subsidies, wind can compete with conventional electricity when electricity prices are high. But electricity prices have fallen because natural gas prices have dropped. This has badly stunted the growth of the wind industry.

Solar, while even more expensive than wind, is still growing rapidly with the help of state subsidies. But it currently produces less than 1 percent of the nation's electricity.

A clean energy standard would give both wind and solar a big push forward. Though a renewable energy standard would have done more.

—Biofuels

The federal government is already backing biofuels three ways. It offers tax credits, it mandates that refiners use a growing amount of it, and it bars imports.

Corn ethanol is now nearly 10 percent of the nation's fuel mix and has reduced gasoline demand. But environmentalists and policymakers say it produces more greenhouse gases than gasoline.

The biofuels industry hasn't been able to produce so-called advanced biofuels, which come from non-food sources and produce fewer greenhouse gases, despite federal mandates to do so.

Obama said he wants to increase investment in clean energy technologies by one third next year. Advanced biofuels could benefit from research and development help.

—Electric Vehicles

To reach Obama's goal of 1 million electric vehicles on the road by 2015, automakers would have to sell 200,000 of them per year between now and then, about 2 percent of annual new vehicle sales. JD Power and Associates predicts sales of fully electric vehicles will be just half that level by 2020.

The goal makes more sense if the president includes hybrid vehicles, which can be plugged in and run for short distances on electric power.

© Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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