BALTIMORE — The nation's first all-electric car-sharing program debuted yesterday at the city's Inner Harbor, with manufacturer Electrovaya hoping urban residents seeking to go green and curious tourists will take the concept for a spin.

Electrovaya Inc. is offering its Maya 300 for rent at the Maryland Science Center. The car can go up to 120 miles on one charge of its lithium-ion battery system, and gets its juice from a regular 110-volt outlet.

"This is an example of what science centers do best," said Van Reiner, president and CEO of the science center. "We are showcasing new technology, and that's what makes us so excited."

Ten cars will be available starting today through the new car-sharing Web site www.Altcar.org. A two-hour rental costs $29.

The manufacturer calls the fleet of emission-free cars a "game changer" in urban transportation options. Electrovaya CEO Sankar Das Gupta said that's because the vehicle has the look and feel of a four-door, gas-powered sedan and should appeal to consumers who want to reduce oil dependence.

"Creative ventures like this are essential in finding new energy solutions," Das Gupta said.

The car makes little noise, provides dashboard gauges showing battery life and temperature, and offers other conveniences like those of gas-powered cars.

Maryland Energy Administration research found that Baltimoreans typically drive about 30 miles to work, well within the Maya's range, and Das Gupta noted that the car can be plugged in at the driver's destination for a charge.

Driving 50 miles costs about $1 in energy, according to Electrovaya's estimates. The cost could be lower through some utilities that give discounts for charging during off-peak hours.

The car-sharing service ZipCar Inc. also operates in the Baltimore market, but Das Gupta said Mississauga, Ontario-based Electrovaya is looking to feature its technology, not challenge ZipCar for market share.

Electrovaya's battery technology uses ExxonMobil Corp.'s battery separator film. The film, with lithium-ion batteries, allows for the units to operate at higher temperatures with a reduced risk of meltdown.

The company will make the Maya 300 available for sale to the general public in 2011, starting at $25,000 for a 60-mile-range vehicle and $35,000 for the 120-mile-range vehicle.