The utility says the money will be targeted to those who are uninsured or underinsured and need help with housing costs or have other urgent needs.
Among those who may be eligible are those who lost their homes during last November's Camp Fire in Butte County. That blaze killed 85 people and destroyed nearly 14,000 homes in and around the town of Paradise.
Judge Dennis Montali approved PG&E's proposal despite challenges from wildfire victims' lawyers, who argued the terms of the aid program are too vague and that the relief fund ought to be much larger.
One estimate prepared for victims' attorneys estimated the actual need among those who lost their homes and have inadequate insurance at $480 million.
The attorneys also pointed out that the proposed wildfire assistance program is less than half of a $235 million bonus program for PG&E employees that Montali approved last month.
But Montali said Wednesday he couldn't under the law impose a larger amount, and said the fund, created voluntarily by PG&E, was an "appropriate remedy."
"We are ready, willing and anxious to fund the $105 million," Stephen Karotkin, an attorney for PG&E, told Montali.