(Reuters) -Southern California Edison (SCE), a subsidiary of utility Edison International (NYSE: EIX ), said on Friday it had submitted an initial plan to rebuild the areas within its service territory that were devastated by the Los Angeles wildfires in January.

The preliminary plan was submitted to California Governor Gavin Newsom and is estimated to cost between $860 million and $925 million, SCE said, adding that securing alternate funding sources was critical to making the plan a reality.

The wildfires tore across LA starting on January 7, leading to dozens of deaths and destroying thousands of homes. It is estimated to be the most expensive natural disaster in U.S. history.

Although no official cause for the fires has been released, several lawsuits have claimed that SCE power lines and towers in Altadena started one of the blazes - the Eaton (NYSE: ETN ) Fire.

SCE has also been sued by the LA County and the City of Pasadena.

The company said on Friday the investigation was ongoing and it "remains committed to transparency with the public".

It also said that its preliminary plan would primarily focus on undergrounding power lines in the Altadena and Malibu areas located in the Los Angeles county.