Hundreds of cyclists, skateboarders and walkers will hold a “rolling rally’’ outside the headquarters of Dominion Resources in Richmond on Saturday to call for solutions to climate change, including the rapid development of offshore wind power off Virginia’s coast.

Participants will place colorful pinwheels in a mock ocean on the steps of the Dominion building to symbolize support for offshore wind power.

The activists plan to travel from the Richmond offices of the state’s largest electric company to the State Capitol downtown.

The gathering is part of a worldwide event that calls for a fossil fuel-free globe. Organizers said hundreds of thousands of people are expected to participate in nearly 2,000 such events ranging from five- mile hikes to 350-hour bike rides.

“It sounds like quite an event. Nobody supports wise and diverse energy use more than us,” said David Botkins, spokesman for Dominion Virginia Power. “We are very interested in off-shore wind development, but they probably should keep their pinwheels.”