Submitted by Andrew Lord
Having introduced a significant carbon tax earlier this year, the BC government unveiled a second plank in its aggressive effort to tackle climate change. On April 3, 2008, the BC government introduced Bill 18, Greenhouse Gas Reduction (Cap and Trade) Act (the "Act"). The Act would create a cap-and-trade system for greenhouse gas emissions in the province that could be an effective complement to the carbon tax.
Under the Act, the BC government would issue B.C. Allowance Units ("BCAUs"), each corresponding to a right to emit one tonne of carbon dioxide equivalent, to companies in designated sectors. Those companies would then only be permitted to emit the amount of greenhouse gases for which they held BCAUs. This is the "cap" that makes the policy environmentally effective. Those companies who emit more than their assigned amount of BCAUs would have several alternative compliance options, which together constitute the "trade" element that makes implementing the cap more economically efficient. Such companies could do the following:
- Purchase BCAUs from other companies who were able to cut their emissions below their assigned amounts;
- Purchase Recognized Compliance Units ("RCUs") from other jurisdictions (discussed below);
- Create or acquire BC Emissions Reductions Units ("BCERUs"), which will be generated by projects that avoid or sequester emissions, to offset their excess emissions; or
- Pay an administrative penalty.
The details of the BC cap-and-trade system will be developed in parallel with the Western Climate Initiative (the "WCI"). The WCI, whose signatories include BC, Manitoba, California, Oregon, Washington, New Mexico, Arizona, Utah and Montana, will implement a regional cap-and-trade system. By harmonizing the systems, BC hopes to create increased liquidity for carbon instruments. The Recognized Compliance Units mentioned above are expected to largely be sourced from WCI members.
The Act will also establish the administrative apparatus required to track the allocation and trading of the various units and to approve BCERUs and RCUs.
Carbon taxes and cap-and-trade systems are recognized as two ways of placing a price on carbon. The two approaches are significantly different both in the way they achieve the goal of reducing emissions and also in the breadth with which they may be implemented. With respect to the way a emissions are reduced, carbon taxes put a price on carbon in the expectation that consumers will shift demand away from carbon-intensive products. That price incentive should result in reduced emissions. However the result is not guaranteed, particularly if the price signal is not strong enough. Cap-and-trade systems, by contrast, legislate what amounts to a scarcity of emissions. Combined with measures to create a liquid market, that scarcity results in a price for carbon. However it is the legislated scarcity, and not the price signal, that controls the level of emissions. Because that scarcity can be controlled directly, reduced emissions can be guaranteed to a much greater extent than through carbon taxes. With respect to the breadth with which the two approaches can be implemented, a carbon tax can be implemented for all types of consumers, from big businesses to individuals, and can thus drive down emissions across the economy. In contrast, a cap-and-trade system is complex to administer and is thus better suited for large emitters than for individual consumers.
These counterbalancing differences make a carbon tax and a cap-and-trade system complementary. BC therefore appears to be undertaking a very sophisticated, progressive, and hopefully effective approach to addressing the problem of climate change. Check back here for updates as Bill 18 makes its way through the BC Legislative Assembly.