Energy 101

VI: Transportation and the Built Environment

Chapter 23: Advanced Fuels and Drivetrains

Today, transportation is primarily powered by petroleum products. However, a variety of alternative fuels and drivetrains, such as natural gas, biofuels, and electricity, are emerging. Each of those options has its own performance, economic, and environmental tradeoffs. Generally speaking, the alternatives require an additional up-front investment in infrastructure or onboard storage, but then cost less

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