Alt Fuels

Tesla CEO Elon Musk made a bet that he'd build the world's largest lithium-ion battery in Australia in 100 days. If his company failed, Musk would personally pay for the project, but the battery is now ready for its first test ahead of full operation—and on schedule. The massive...

Tesla has never built anything but battery-electric cars. Now a Dutch gasoline company believes it's improved upon the Silicon Valley automaker's design with a hydrogen fuel cell—so much so that it wants to sell its solution to the general public. The Holthausen Group, a Dutch gasoline...

Earlier this month, the 30th World Solar Challenge kicked off in Darwin, Australia, with 42 competitors vying for victory. At the end of the 3,022-kilometer (1,880-mile) race from Darwin to Adelaide, one team emerged victorious in the highly contested Cruiser class. Solar Team Eindhoven, from the...

Following years of debate, the EPA said earlier this month it will study the possibilities of cutting the amount of ethanol in the United States' gasoline supply. Since 2007, the Renewable Fuel Standard (RFS) has required growing amounts of ethanol to be blended into U.S. fuel supplies, with...

Although a car powered solely by solar power is far from reality, the 30th anniversary of the World Solar Challenge showcased just how far the technology has come. World Solar Challenge kicked off its celebrations with this year's iteration of the solar-powered car race in Darwin, Australia, on...

Audi’s vision of future mobility primarily centers around an array of long-range electric cars scheduled to debut in the coming years under the "e-tron" badge. These are intended to be Tesla killers, as they’re often called in Germany. But there’s another kind of tron with a...

Solar power provides 10 percent of California's energy supply, which meant electric-grid operators had to be prepared for potentially disastrous effects during Monday's solar eclipse. To the surprise of many, there were no serious repercussions as the moon blocked a significant source of energy for...

Natural gas vehicles were first promoted starting in about 2000 as a way to reduce reliance on imported oil and cut tailpipe emissions. Their promise appeared to grow near the height of the global financial crisis, when gas prices hovered around $4 per gallon across much of the United States. The...

Electric cars may receive most of the attention within the realm of alternative propulsion methods, but liquid hydrocarbon fuels will be with us for many decades to come. The challenge then becomes how to reduce the carbon footprint of extracting, transporting, refining, and burning those fuels to...

President Donald Trump has announced his intention to pull the United States from the Paris Climate Pact, but private companies and other entities are taking on the challenge of clean energy themselves. Goldwind Americas, a subsidiary of a leading Chinese wind-turbine manufacturer, continues to...

The myth surrounding the car that's credited with putting America on wheels simply isn't true: the Ford Model T was never meant to run fuels other than gasoline. The myth has circulated throughout the car's history, most recently thanks to the internet. It has mostly taken the form of a legend in...

While political control in Washington has changed, the debate over a mandate to blend specific volumes of ethanol into the U.S. fuel supply has not. Since its passage in 2007 as part of the Energy Independence and Security Act, the ethanol-mandating Renewable Fuel Standard has attracted...

Natural gas has not proven popular for vehicles bought by individual consumers, but some fleet operators continue to find it an attractive alternative to gasoline and diesel. That's because the lack of public fueling infrastructure proves a major drawback for natural-gas passenger cars, but fleets...

New natural-gas passenger cars from major carmakers have disappeared from the U.S. Natural-gas options are available for large pickup trucks and vans but only exist for cars through aftermarket conversions offered by specialty firms. In Europe, though, the German luxury maker Audi remains committed...

Even with aggressive promotion of battery-electric or hydrogen fuel-cell cars, hundreds of millions of internal-combustion vehicles will remain on the world's roads for decades to come. But estimates of exactly how many internal-combustion cars will be displaced by alternatives in a given period...

The confirmation of Scott Pruitt as Environmental Protection Agency administrator was expected to rankle environmental groups. Pruitt is a climate-science denier who, in his previous position as Oklahoma attorney general, sued the agency he is now charged with many multiple times over its efforts...

If you want to find a major source of transportation-related emissions, just look up. Aviation currently accounts for around 2 percent of global carbon emissions, and many analysts believe its share could triple by the middle of the century if projected growth in air travel occurs. But finding...

Automakers today find themselves in something of an unenviable position. Strict corporate average fuel economy rules continue to ratchet up, while President Trump may—or may not—attempt to change those rules. Until the uncertainty resolves, however, automakers have to stick with their...

When it comes to alternative fuels, the discussion usually centers around compressed natural gas, or biofuels like ethanol or biodiesel. But before the concept of low-carbon or carbon-neutral fuels even existed, a few early makers and desperate drivers tried something completely different. They...

When it comes to reducing emissions, fleet operators generally have fewer options than individual buyers of passenger cars. There are fewer zero-emission vehicle options for vehicles that see commercial use, although those vehicles often cover more miles every year than the average passenger car...