Other pollutants that contribute to smog can also be capped. It also decides the penalties for violations.Ĭarbon dioxide and related pollutants that drive global warming are main targets of such caps. The government sets the cap across a given industry, or ideally the whole economy. Trading gives companies a strong incentive to save money by cutting emissions in the most cost-effective ways. The trade part is a market for companies to buy and sell allowances that let them emit only a certain amount, as supply and demand set the price. The cap on greenhouse gas emissions that drive global warming is a firm limit on pollution. It’s a system designed to reduce pollution in our atmosphere. The best climate policy - environmentally and economically - limits emissions and puts a price on them.
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