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The Carbon Offset Controversy

Aug 28, 2008
Every day people do dozens of things that put more carbon dioxide into the atmosphere. This gas is the main perpetrator of climate change, yet activities like driving, heating your house, air travel, and electricity consumption, are hard to stop. Individuals that want to reduce their carbon footprint, the amount of carbon dioxide generated in a year, have the option of buying carbon offsets, often called renewable
energy credits, or RECs

Carbon offsets are projects that decrease the amount of greenhouse gases (GHG) like carbon dioxide in the air to counterbalance the amount that an individual has emitted. These projects can include, but aren't limited to planting trees (carbon sequestration), erecting wind turbines or solar panels, reducing methane (a greenhouse gas more potent, but less common than carbon dioxide), or updating manufacturing processes to use less fossil fuel.

To offset the average US household energy consumption of 10,656 kWh per year, 3Phases, a large wind company in the Midwest, charges $213.00. 3Phases will use this money to produce, in theory, 10,656 kWh extra in wind energy by building that many more turbines. This new renewable energy will be added to the grid in the place of conventional energy, like coal. The pricing of carbon offsets for alternative energy firms is based on the price difference between fossil fuel energy production and the alternative energy production per kilowatt hour.

In all cases, the money from the offset purchase must instigate additional reductions by the company. Otherwise, the price of the credit will not accurately reflect the amount of GHG reductions it caused. Community Energy Inc., a Pennsylvania-based organization operating in New Jersey, is one of several companies doing the same thing.

As offset purchases have become more popular, journalists and researchers have raised the alarm and cautioned consumers about offsets that do little more than make you feel good. The major concern centers on additionality. Carbon mitigation is only additional if it occurs at a level above the baseline level, also called 'business as usual'. Ideally, the offset you buy should initiate extra reductions that could not have happened without the money you spent. Additionality is hard to measure: large firms are already working to reduce their GHG-producing activities, and offset purchases, especially small ones, may not actually instigate enough new activity to fully offset the promised amount of kilowatt hours.

A recent New York Times article publicized these problems. To many environmentalists, the carbon-neutral campaign is a sign of the times, easy on the sacrifice and big on the consumerism, Andrew Revkin reported in his piece Carbon Neutral Is Hip, but Is It Green? Revkin quotes Denis Hayes, a leading sustainability activist and expert; the worst of the carbon-offset programs resemble the Catholic Church's sale of indulgences back before the Reformation, he says. Instead of reducing their carbon footprints, people take private jets and stretch limos, and then think they can buy an indulgence to forgive their sins.

In the past year, researchers discovered that Al Gore, director of the climate change documentary An Inconvenient Truth, has a carbon footprint twenty times the national average; his mansion consumes almost 221,000kWh (kilowatt hours) a year. Gore buys offsets to legitimize this enormous fossil fuel consumption, but many question if his offset purchase actually exempts him from his climate change sin.

Citizens in China use an average of 6 carbon tons per year, and in India, the average is less than half that. In the United States, however, the average person generates around 25 carbon tons per year. Many environmentalists feel we should be reducing our carbon consumption by taking big steps to change our personal and organizational habits and use different technologies and/ or fuels, instead of taking the easier path of changing nothing, and spending money to transfer the reduction responsibility to others. Different offset providers have different pricing schemes, which further complicates the issue of additionality.

Most people familiar with the offset market, including offset providers, encourage individuals first to take steps to reduce the amount of energy they use before making an offset purchase. Conserving electrical energy by turning off lights and computers at night, buying fuel-efficient appliances and vehicles, and being an informed consumer about the food you buy can all make significant reductions in your carbon footprint.After taking these steps, only carbon offsets can mitigate the remaining GHG emissions, allowing individuals to go completely carbon neutral.

In summary, trees don't reduce carbon, they sequester it for as long as they live. Energy conservation is probably the best way to lower your carbon footprint.
Carbon offsets essentially fund additional carbon reduction that would not happen otherwise.

Individuals and institutions have 3 ways to lighten their carbon footprint:

1) Reduce your own energy consumption
2) Replace dirty energy with clean
3) Facilitate and fund energy conservation by others, particularly those who cannot afford to do it themselves
About the Author
James Nash is a climate scientist with Greatest Planet (www.greatestplanet.org). Greatest Planet is a non-profit environmental organization specialising in carbon offset investments.

James Nash is solely responsible for the contents of this article.
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