Britain helps citizens atone for emissions

So you took that transatlantic flight, paid $20 to offset the greenhouse gases ejected by the plane, and reduced your carbon footprint. But did you really help save the planet?

As the clamor over global warming gets ever louder, the practice of carbon offsetting – paying a third party to remove or otherwise offset an amount of carbon equivalent to the volume emitted – is now falling under close scrutiny.

Environmental experts are warning that some projects are less effective than others, and say the market urgently needs some form of regulation: Carbon-offsetting prices vary enormously, from around $10 to $50 a ton, and consumers have little idea what they are actually getting for their money.

"Part of the problem is that there are no real standards for carbon offsetting," says Richard Tarasofsky, a sustainable development expert at the London-based Chatham House think tank. Without international certification, he says, the new fad could quickly be compromised.

Against this backdrop, Britain has announced plans to become the first country to set a standard on how effective and worthy offsetting projects are. A "kitemark," or official logo,will be introduced in the autumn to "raise awareness so that consumers understand what offsetting is and how it can contribute to tackling climate change," explains one government official on customary condition of anonymity.

But which projects will get the nod? Environmentalists tend to agree that the best are those that seek to reduce emissions, such as renewable energy projects, rather than those that sequester carbon already in the atmosphere, like reforestation projects, as no one can say for certain whether a new tree will survive to absorb a lifetime's carbon dioxide.

"It's very difficult to measure the emissions reduction from a tree or a new forest – it depends on where it is grown," says Kirsty Clough, an offsetting expert with the Worldwide Fund for Nature (WWF). And at the end of the day, she points out, "it's not driving a lower-carbon economy."

Concern is growing that the British program will not always promote the best projects. The new standard will be based on an international system already established by the Kyoto process known as the Clean Development Mechanism (CDM). This, experts say, tends to favor large industrial schemes to reduce other harmful gases like chlorofluorocarbons (CFCs) and methane over smaller projects that tackle carbon emissions.

"This doesn't help us move to low-carbon economies," warns Simon Retallack of London's Institute for Public Policy Research. "CFCs are a low-hanging fruit much easier to reduce."

Michael Buick, a spokesman for Climate Care, one of Britain's largest offsetting companies, says that bringing in CDM-style standards would undermine some of Climate Care's worthiest projects, such as an efficient-stoves program in Mexico. One new stove alone, he says, cuts 1.5 tons of CO2 a year.

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