Edison was required by the California Public Utilities Commission to turn in preliminary information regarding rate recovery proposal on Friday and revised supplemental prepared testimony by Monday.
This information is a part of a larger report Edison is currently working on that will be due by Feb. 28.
Edison officials stress this preliminary information could change by the time the full report is turned in.
"There are two issues here, but they are parts of the whole PUC review and decision process," said Paul Klein, Edison spokesman. "There is no decision being made now."
"There is cost figures involved in here that could be updated ...could change," Klein said.
The PUC ordered this information Nov. 15.
The $2.1 billion Tehachapi project aims to carry wind-generated electricity from Kern County to the Los Angeles Basin.
The project was originally approved by the PUC in 2009.
Edison already has started extending the towers about five miles into the right-of-way.
But city officials and the grassroots group Hope for the Hills have advocated building the project underground.
Chino Hills officials have spent more than $2 million battling Edison in a lawsuit for more than two years insisting the right-of-way is too narrow for the proposed 198-foot towers and that it causes safety hazards.