Rising energy costs and climate change are dual challenges facing businesses today. These challenges are particularly salient for corporate vehicle fleets. Uncertainties loom — from fluctuating fuel costs to future government regulations. At the same time, companies are under increasing pressure to find cost-effective ways to reduce emissions, including purchasing carbon offsets.

Why Care about Global Warming?

Fleet vehicles are driven hard, averaging nearly double the mileage, fuel consumption, and emissions of personal vehicles. As a result, fleets are not only expensive to operate, but are also a major source of global warming pollution. In the U.S., nearly a third of carbon dioxide emissions come from transportation, and 62 percent of those come from cars and light trucks. Despite technological advances, vehicle emissions have continued to grow due to the popularity of larger vehicles, higher horsepower engines, and increasing vehicle miles traveled.

This is a problem we can solve. With new tools and good information, corporate fleets can reduce global warming pollution, become good corporate citizens, and improve their bottom lines.

Operating a cleaner, greener fleet means more than counting the number of hybrids or alternative-fuel vehicles a company puts on the road. Successful management means actively measuring and reducing a fleet’s greenhouse gas emissions over time.

Fleets that have already taken significant steps to reduce their emissions can reduce the rest — go "climate neutral" — by investing in high-quality carbon offset projects to effectively "zero-out" a fleet’s greenhouse gas impact. In most cases, the cost of the offsets will be a good deal lower than the fleet savings earned from reducing costs by improving efficiency. (For more information, including a five-step framework to green a fleet, visit www.edf.org/greenfleet).

How Do Carbon Offsets Work?

A carbon offset counterbalances the impact of a company’s greenhouse gas emissions by avoiding or storing an equal amount of pollution, often at another site. When a company buys offsets, it essentially pays someone to reduce or remove global warming pollution in the company’s name.

Since greenhouse gases have the same impact on global warming regardless of where they are emitted on Earth, paying for an emission reduction that occurs elsewhere in the world helps solve the problem. In essence, by investing in credible offset projects, companies can operate a fleet that has no net global warming impact.

How Can a Fleet Use Offsets?

Offsets offer immediate opportunities to achieve important near-term reductions as next-generation technologies develop. Thus, they’re a critical part of any organization’s climate action plan.

Before exploring offsets, it’s important to understand the fleet’s GHG baseline — the amount of annual GHG emissions from the fleet. From that baseline, emission reduction goals can be set and strategies can be developed to reduce emissions. Emission reduction strategies include selecting more efficient vehicles or training drivers to use them more efficiently. Once direct vehicle emissions have been reduced as much as possible, carbon offsets become a viable option to make even deeper net reductions and help achieve aggressive reduction goals.

Fleet managers should follow these steps when considering offsets:

Understand offsets and priorities. Before purchasing offsets, companies should understand how offsets work and how they can help support strategic business goals.

Determine the purchase size. Once a company has measured and reduced direct vehicle emissions as much as possible, the fleet will still produce emissions. By calculating these remaining emissions, a fleet manager can determine how many offsets to purchase to make the fleet "climate neutral."

Review and evaluate available options. Offset quality is an important consideration. Because quality standards within the offset market are still developing, not all offsets have the same environmental value, which can complicate purchasing decisions.

Until uniform standards are established, buy only from trusted suppliers who verify that their offsets meet rigorous criteria. Examples of high-quality offset projects prescreened by Environmental Defense Fund can be found at www.CarbonOffsetList.org.

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