Stavins: For Energy Efficiency, No Such Thing As a "Free Lunch"
September 24, 2009
September 23, 2009 | Yael Borofsky,
By Roger Pielke, Jr., Senior Fellow
Recently I've seen a number of claims made about China's plans to improve the energy intensity of its economy. Here are some examples:
From the Christian Science Monitor:
Considering the country already has reduced its economy's energy intensity by 20 percent over the past five years, the shift to carbon intensity with a meaningful goal attached "would be significant and impressive," says Reid Detchon, vice president for energy and climate at the United Nations Foundation in Washington.
China appears to be making steady progress toward its goal of achieving a 20-percent reduction in energy intensity by 2010.
"This suite of policies [alluded to today at the UN] will take China to be the world leader on addressing climate change," he said. De Boer told reporters: "It will be quite ironic to hear that tomorrow expressed in a country (the United States) that is firmly convinced that China is doing nothing to address climate change."
But such claims -- and there are many these days -- are made with absolutely no reference to data, so I decided to have a look. Getting data on China's economy and energy use can be tricky, so I have relied on two reliable sources, the BP Statistical Energy Review for energy consumption and the IMF for GDP. I used GDP expressed in constant national currency because the 11th Five-Year Plan of the Chinese government expressed its GDP numbers in terms of market exchange rates and not in terms of PPP. The plan seeks to reduce energy intensity of GDP by 20% from a 2005 baseline.
Energy intensity is thus energy consumption divded by GDP. The graph below shows Chinese energy intensity for the period 1998 to 2008, with 2005 (the Plan's base year) set to 1.0.