The Real Cost of Tackling Climate Change
Steven Hayward does the math:
”Way too little and way too late,” runs the refrain, followed by the claim that nothing less than an 80% reduction in emissions by the year 2050 will suffice – what I call the “80 by 50″ target. Both Hillary Clinton and Barack Obama have endorsed it. John McCain is not far behind, calling for a 65% reduction.
Right now our cars and trucks consume about 180 billion gallons of motor fuel. To meet the 2050 target, we shall have to limit consumption of gasoline to about 31 billion gallons, unless a genuine carbon-neutral liquid fuel can be produced. (Ethanol isn’t it.) To show how unrealistic this is, if the entire nation drove nothing but Toyota Priuses in 2050, we’d still overshoot the transportation emissions target by 40%.
The enthusiasm for an 80% reduction target is often justified on grounds that national policy should set an ambitious goal. However, claims on behalf of alternative energy sources – biofuels, hydrogen, windpower and so forth – either do not match up to the scale of the energy required, or are not cost-competitive in current form.
How on God’s green earth will we make up the difference? Someone should put this question to the candidates. And not let them slide past it with glittering generalities.