Presidential hopeful Sen. Bernie Sanders was in California on Thursday, campaigning across the Golden State, where he unveiled his big plan for a new green energy future. “We need bold and decisive action to combat climate change,” Sanders said in Paradise, California, where he met with survivors of the Camp Fire, California’s deadliest wildfire.Later in Sacramento, Sanders attracted more than 1,000 people who gathered in Cesar Chavez Plaza for a campaign rally. Sanders supporters were enthusiastic about his $16 trillion plan to avert a “climate catastrophe.” “That money is extremely well spent because what's scary is our planet is literally collapsing,” said Jonah Paul, a Sanders supporter from Sacramento. “We are facing ecological catastrophe. And we have to spend money like we're waging war. So we are waging war against climate change." For supporter Tristan Brown, Sanders’ plan is the right approach to “save the planet from global warming.” Brown said the plan was important for providing, “the next generation of jobs that are going to be in the industry sector. And that’s going to take some good investment.”The war on climate change is not popular with Republicans like Assembly member Jim Gallagher, who represents many people who lost homes in last year’s Camp Fire. “First of all, this wasn't a climate disaster,” Gallagher said. “This was a wildfire that was sparked by century-old equipment by PG&E that wasn't maintained and upgraded the way it should have been."Under the Sanders plan, the U.S. would reach 100% renewable energy for electricity by 2030. But the $16 trillion price tag is too much for many critics, including Cynthia Bryant, executive director of the California Republican Party.She said Sanders' plan would “double our taxes, triple our taxes, maybe."“Everything he does costs a trillion dollars. Health care for all, a trillion dollars. Student loan forgiveness, a trillion dollars. Now, $16 trillion for this green energy plan,” Bryant said.For Sanders, California is critical to his quest for the Democratic nomination, according to KCRA 3 political analyst Kevin Riggs.“He did really well here in 2016,” Riggs said. “He carried nearly half the counties, with 46% of the vote to Hillary Clinton's 53%. It's even more important to him in 2020 that he do well in California given the early primary next year on Super Tuesday."The latest polls show Sanders in second place for the Democratic nomination with 16% support, just ahead of Sen. Elizabeth Warren at 15%. “The problem that Bernie Sanders is facing now is that he is competing with Elizabeth Warren for the same bloc of voters,” Riggs said. “He and Elizabeth Warren are cannibalizing each other’s voter base.”Sanders and Warren are still ahead of Sen. Kamala Harris, who has 7% support. But all three trail former Vice President Joe Biden at 28%, according to the poll.