Free Lunch?

Supporters of energy-efficiency policies argue that they are a “win-win”, helping to reduce energy expenditures while also reducing carbon dioxide emissions and other negative externalities from energy use. This much discussed McKinsey report, for example, argues that energy-efficiency investments are a “vast, low-cost energy resource” that could reduce U.S. energy expenditures by billions of dollars per year. And the potential for savings is even larger in low and middle-income countries, where most of the growth in energy demand is expected to come over the next several decades.

Before pushing these policies worldwide, however, it is important to make sure that they really work. Much of the existing evidence on energy-efficiency comes from ex ante analysis based on many assumptions. Take, for example, this marginal abatement cost curve from a World Bank study about Mexico.  Investments in energy-efficient air-conditioners and refrigerators are both predicted to be negative net cost investments. That is, these are investments that, according to the World Bank, pay for themselves even before accounting for externalities.

Source: World Bank. 2009. “Low-Carbon Development for Mexico,” report prepared by Todd M. Johnson, Claudio Alatorre, Zayra Romo, and Feng Liu.

This new EI@Haas working paper takes a closer look. Since 2009 a nationwide program that we call “Cash for Coolers” has helped 1.5 million Mexican households replace their refrigerators and air-conditioners with energy-efficient models. Performing an econometric analysis using household-level billing data, we find that refrigerator replacement does save electricity, but only about one quarter of the savings predicted by the World Bank.

And we are finding that air-conditioning replacement actually increases electricity consumption. Part of this is the “rebound effect”, the idea that energy-efficient durable goods cost less to operate, so households use them more. In addition, we discuss how increases in appliance size and features worked to substantially offset the potential reductions in energy consumption.

Overall, this policy appears to be much less cost-effective than was predicted by ex ante analysis. These results underscore the urgent need for careful modeling of household behavior, and for credible empirical work in this area.

About Lucas Davis

Lucas Davis is an Associate Professor of Economic Analysis and Policy at the Haas School of Business at the University of California, Berkeley. His research focuses on energy and environmental markets, and in particular, on electricity and natural gas regulation, pricing in competitive and non-competitive markets, and the economic and business impacts of environmental policy.
This entry was posted in Uncategorized and tagged , , . Bookmark the permalink.

3 Responses to Free Lunch?

  1. Steven Schiller says:

    It is a matter of “as compared to what?” Is your baseline an absolute of what was used before or does it take into account suppressed demand, or avoidance of future energy use/emissions if people actually are allowed to have properly cooled homes (and cold beer)?

  2. Pingback: Free lunch? | Veille énergie climat

  3. Dannielle Cordwell says:

    The first modern air conditioning system was developed in 1902 by a young electrical engineer named Willis Haviland Carrier. It was designed to solve a humidity problem at the Sackett-Wilhelms Lithographing and Publishing Company in Brooklyn, N.Y. Paper stock at the plant would sometimes absorb moisture from the warm summer air, making it difficult to apply the layered inking techniques of the time. :

    Our website
    <'http://www.beautyfashiondigest.com/best-foundation-for-acne-prone-skin/

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s