California aims to generate electric power from traffic congestion

California is planning a US$2.3 million initiative that will generate electrical power from traffic, according to the San Francisco Chronicle. The California Energy Commission recently voted to fund two piezoelectricity projects, which convert pressure into power. One pilot will test a 200-foot-long piece of asphalt on UC-Merced’s campus, which is designing a 200-foot stretch of asphalt that will be sowed with inch-wide piezoelectric generators, which will be stacked within arrays below the road where it is
April 20, 2017 Read time: 2 mins
California is planning a US$2.3 million initiative that will generate electrical power from traffic, according to the San Francisco Chronicle. The 4259 California Energy Commission recently voted to fund two piezoelectricity projects, which convert pressure into power.


One pilot will test a 200-foot-long piece of asphalt on UC-Merced’s campus, which is designing a 200-foot stretch of asphalt that will be sowed with inch-wide piezoelectric generators, which will be stacked within arrays below the road where it is hoped they will convert the force of passing cars into a small electrical charge.

The resulting electricity could be used to power nearby lights and signs, stored in batteries or sent to the grid, Sun said. The more traffic there is, and the heavier the vehicles are, the more power can be created. Some state estimates suggest that just 400 cars an hour would need to pass over the arrays to make them economically viable.

The second experiment will be built by the San Jose green technology company Pyro-E. The company's technology is expected to generate enough power to supply 5,000 homes using less than a half-mile of piezoelectric highway.

Both pilot programs are expected, within two to three years, to be able to give California officials an idea whether the effort should be expanded. By developing new technologies like piezoelectricity, the Energy Commission is looking to help meet the Legislature’s target of producing 50 per cent of the state’s power from renewable sources by 2030.

For more information on companies in this article

Related Content

  • Nothing basic about universal basic mobility
    May 5, 2022
    The concept of universal basic mobility is here: but Shared-Use Mobility Center CEO Benjamin de la Peña tells Ben Spencer that such schemes may not be looking at the right targets
    Read More
  • Battery bottleneck: EV roll-out at risk
    June 17, 2019
    In order for the take-up of electric vehicles – a key part of the future mobility mix - to grow, we need batteries. And that might prove tricky, reports Graham Anderson Industry and commodities experts fear that the growth in electric vehicles (EVs) could be much slower than predicted due to bottlenecks in global battery market supply chains. “People seem to think that the switch from the internal combustion engine to electric vehicles just means you plug your car in rather than fill it with petrol,” a
    Read More
  • San Francisco plans express lane network across Bay Area
    February 25, 2015
    Colin Sowman looks at plans to convert 240km (150 miles) of HOV/car pool lanes. While some authorities have debated the conversion of high occupancy vehicle lanes (HOV) into express or managed lanes allowing toll paying single-occupant vehicles to avoid congestion, San Francisco’s Bay Area Metropolitan Transportation Commission (MTC) has acted. It is converting 240km (150 miles) of HOV/car pool lanes to express lanes and last fall the MTC’s Bay Area Infrastructure Financing Authority selected TransCore to d
    Read More
  • UK trial of electric cars proves they are greener
    June 14, 2013
    Experts leading a major three-year trial into the impact of electric vehicles and the role they could play in our transport systems of the future, have shown that rolling them out across our city’s roads would protect both our health and the environment. Data gathered and analysed by transport experts at the UK’s Newcastle University shows that daytime air pollution levels in our towns and cities regularly exceed the Government’s recommended 40µg m-3 (21 parts per billion) for prolonged periods, putting peo
    Read More

Highlighted Content