WASHINGTON — President Obama will announce on Friday a handful of executive actions and private and nonprofit groups’ investments in energy efficiency and renewable energy.

The initiatives will not amount to much in terms of energy policy or their impact on global warming. But they are part of a broader campaign to build public support for an Environmental Protection Agency rule that the White House will unveil in June. The rule, which has already run into objections, will limit carbon pollution from coal-fired power plants and is expected to create a major new market for zero-carbon energy from sources like wind and solar.

Mr. Obama will make his announcement in a speech at a Walmart in Mountain View, Calif., where he will talk up the benefits of solar power and energy efficiency. The speech will come at the end of a presidential fund-raising trip to Silicon Valley.

The president chose Walmart to make a point: The corporation gets about 25 percent of its electricity from renewable power sources such as solar and wind. In the United States over all, only about 5 percent of power comes from renewable sources.