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Are hybrid cars actually environmentally damaging?

Dear EarthTalk: I read that hybrid cars are actually less green-friendly than even Hummers, because they have two motors and very environmentally damaging batteries. Is this true?

Renee Sweany

Indianapolis, Ind.

The claim you read about was from “Dust to Dust: The Energy Cost of New Vehicles from Concept to Disposal,†a controversial study by researcher Art Spinella of Oregon-based CNW Marketing. It ranks more than 300 vehicles for their energy use over their entire lifecycles — from raw materials extraction and manufacturing, to driving and burning fuel, to the recycling and disposal of parts. What surprised even Spinella was how the Toyota Prius, the world’s most successful gasoline-electric hybrid car, stacked up against General Motors’ behemoth Hummer, the modern poster child for unsustainable transportation.

“The Hummer over the lifetime of the vehicle ends up being less of a drain of energy on society in general than does the Prius,†wrote Spinella in his report. A key determining factor was the hybrid battery’s use of nickel extracted from a Sudbury, Ontario, mine that has emitted so much sulfur dioxide that acid rain has turned a once healthy nearby forest into a bleak landscape. That mine, however, which supplies nickel for many industrial purposes and not just hybrid batteries, has cut pollution 90 percent since the 1970s.

Another common criticism of hybrids is that their batteries will be a pollution threat once they land in the junkyard. But hybrid advocates insist that the nickel-metal hydride batteries found in the Toyota Prius, Honda Insight and other hybrids contain far fewer pollutants than the lead-acid varieties used in traditional cars. And initial worries that hybrid batteries would need replacement every few years have not borne out; Toyota says the batteries should go for 150,000 miles, which they predict to be the car’s life expectancy.

Spinella pegs the life of the typical Prius bought new today at only 100,000 miles, and contrasts that against a predicted 300,000 for Hummers — meaning that, though Hummers burn more gas and emit more pollutants, they will last much longer. Additionally, Spinella factors in the added production costs of including two separate engines in the Prius — one that runs on gas and the other on electricity.

Most environmentalists challenge Spinella’s conclusions. Jim Kliesch, research analyst with the American Council for an Energy-Efficient Economy (ACEEE), which publishes a yearly rating of the “Greenest and Meanest†cars, says the CNW study contradicts many other studies, including those conducted by the Massachusetts Institute of Technology (MIT), Carnegie Mellon, Argonne National Labs, the Union of Concerned Scientists and others that place the green-friendliness of the Prius and other hybrids head and shoulders above many other vehicles and certainly the Hummer.

Spinella is “way off the mark,†says Kliesch, and scolds CNW for not having “Dust to Dust†peer-reviewed for accuracy. “If you do some back-of-the-envelope calculations on their claims,†he says, “you’ll find that it takes about $286,500 in energy to produce and assemble a Prius, [which is] absurd.â€

Dear EarthTalk: What tax or other government incentives are there out there for buying green —for individuals as well as businesses?

Sarah Rafferty

New York, N.Y.

There has never been a better time than now to tap into a laundry list of tax rebates and other financial incentives designed to encourage individuals and businesses to go the greener mile. At the federal level in the United States, individuals can reap the rewards of no fewer than eight different financial incentives ranging from tax credits and home loans for replacing windows and installing insulation around the house to tax rebates for purchasing a hybrid car or hooking up a solar hot water heater.

Besides these federal incentives, nearly every U.S. state has additional state or local incentives available. Many require utilities to rebate consumers who save electricity. Some utilities even offer “net metering,†whereby consumers who generate some of their power through rooftop solar panels or other technologies can sell electricity back to the utility, thus reducing or zeroing out their electric bill — even earning money.

Many financial incentives are in place for businesses, as well. At the federal level, examples include an energy-efficient commercial buildings tax deduction, a business energy reduction tax credit, an energy-efficient appliance tax credit for manufacturers, and a new energy-efficient tax credit for green-savvy builders.

At the state level, many are eager to attract renewable energy companies to their region, and offer tax breaks to get them there. Washington state, for example, charges no sales tax on renewable energy equipment produced or sold there. And some forward-thinking cities are beginning to offer “density bonuses†and green building incentives to developers and builders to encourage sustainable land use.

The he free online Database of State Incentives for Renewables and Efficiency (DSIRE) is a comprehensive source of information on state, local, utility and federal incentives that promote renewable energy and energy efficiency.

DSIRE is a federally funded project of the Interstate Renewable Energy Council, whose membership includes state and local government agencies, national laboratories, renewable energy companies and advocacy groups.

In Canada, the Office of Energy Efficiency at Natural Resources Canada offers a slate of federal grants and incentives under its ecoENERGY Retrofit program to homeowners, businesses, large industries and public institutions to help them invest in energy- and pollution-saving upgrades. The agency also administers the High Efficiency Home Heating System Cost Relief program, which will contribute up to $300 to homeowners who upgrade their old oil or gas furnace or boiler to a new high-efficiency model. And low-income households might qualify for additional federal financial assistance for energy retrofits. Another Canadian program, the Vehicle Efficiency Incentive (VEI) rewards those who buy fuel-efficient cars or trucks with rebates of up to $2,000 each. Beyond these federal programs, selected provincial and municipal entities across Canada also offer incentives to those looking to save energy and the environment.

CONTACTS: Database of State Incentives for Renewables and Efficiency (DSIRE), dsireusa.org; Natural Resources Canada ecoEnergy Retrofit Program, oee.nrcan.gc.ca/corporate/incentives.cfm.

GOT AN ENVIRONMENTAL QUESTION? Send it to EarthTalk, c/o E/The Environmental Magazine, PO Box 5098, Westport, CT 06881; submit it at emagazine.com/earthtalk/thisweek/, or e-mail earthtalk@emagazine.com. Read past columns at emagazine.com/earthtalk/archives.php.

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