In the 2020 presidential election, climate activists demanded that Democratic candidates explain, in detail, how they planned to tackle the planet’s greatest environmental threat.

But in the weeks since Vice President Kamala Harris ascended the 2024 Democratic ticket, she has mentioned climate change only in passing, and offered no specifics on how she would curb dangerous levels of warming. Climate leaders say they are fine with that.

“I am not concerned,” said Jay Inslee, the Democratic governor of Washington, who made climate change the centerpiece of his own 2019 bid for the presidency. Mr. Inslee said he believes it is more important for Ms. Harris to draw a distinction between her and her Republican rival, former President Donald J. Trump, than to drill down on policy nitty-gritty.

“I am totally confident that when she is in a position to effect positive change, she will,” Gov. Inslee said.

As Ms. Harris prepares to address the nation on Thursday at the Democratic National Convention, she faces the challenge of energizing party loyalists while also reaching out to disaffected Republicans and moderate voters. So far Ms. Harris and her running mate Tim Walz, the governor of Minnesota, have embraced a pragmatic agenda, calling for things like a minimum-wage increase and child-care funding.

While President Biden has made climate change a signature issue, signing into law the largest clean energy investments in American history, Ms. Harris has yet to detail for voters her climate or clean-energy positions. Some analysts chalked that up to strategy and said new promises to slash greenhouse gas emissions or rein in fossil fuels could alienate voters particularly in the energy-rich swing state of Pennsylvania.