The California Air Resources Board announced that California Climate Investments in zero-emission vehicles have reached $599 million since 2013, putting hundreds of thousands of ultra-clean cars, and entire fleets of zero-emission trucks and buses on California roads and highways. The announcement was made at the annual Advanced Clean Transportation Expo in Long Beach.

The funding is from California Climate Investments, a statewide program that puts billions of cap-and-trade dollars to work reducing greenhouse gas emissions, strengthening the economy, and improving public health and the environment — particularly in disadvantaged communities.

Since the transportation sector overall is by far the largest contributor to the state’s total annual greenhouse gas emissions, a major focus of the climate investment program has been supporting the development and deployment of next-generation zero-emission trucks, cars, and buses.

The investments support a wide range of next-generation vehicles, including electric school buses in Sacramento, electric yard trucks in Fontana, hydrogen-powered buses in the Coachella Valley, and a fleet of electric delivery trucks for Goodwill Industries in the Bay Area. More than 65% of the investments are for projects or vehicles that are in, or benefit, disadvantaged communities.

One major focus of these investments is to accelerate the market for the next generation of clean, heavy-duty trucks, and buses, both those that run on electricity and on hydrogen. Several are demonstration projects, such as putting newly built zero-emission trucks to work side-by-side with existing diesel trucks in rail yards or distribution centers to fully determine their benefits and capabilities in those demanding work environments.

In many cases, it is estimated that the overall operating costs of the zero-emission trucks and buses will be less than fossil-fuel powered trucks over the life of the vehicle because of lower fuel and maintenance costs. The California Climate Investments are designed to help drive down the upfront purchase price of the cleaner zero-emission trucks, and as their numbers increase, that cost will drop even further due to economies of scale.

Another goal of these investments is to support the market for zero-emission cars throughout the state, and making them available to residents of low-income communities. Thanks to the state’s zero-emission regulation and incentives, California — with 283,000 zero-emission and plug-in vehicles to date — comprises more than 40% of national zero-emission car sales, even though the state has only 10% of the nation’s population.

Many of these cars, trucks and buses are built in California. Tesla, which manufactures electric cars in the Bay Area; BYD, which builds buses in Lancaster; and Proterra, which builds zero-emission vehicles in the City of Industry, together employ more than 12,000 workers building the cars and buses that are helping to clean California’s air and fight climate change.

The cap-and-trade program also creates a financial incentive for industries to invest in clean technologies and develop innovative ways to reduce pollution. California Climate Investments projects include affordable housing, renewable energy, public transportation, zero-emission vehicles, environmental restoration, more sustainable agriculture, recycling, and much more. At least 35% of these investments are made in disadvantaged and low-income communities.