The state endured rolling blackouts and other problems before federal regulators ordered restraints on electricity prices last summer.
There are 11 applications before regulators to run electrical and gas lines out to Long Island.
Last week, he appeared before regulators and invoked his constitutional right not to testify.
Formerly, a utility went before regulators with a power plant here, customers there and a clear case for a line in between, he said.
The panel's report could have some bearing on issues now before regulators.
In claims before federal regulators, California says it is owed a refund of at least $9 billion from the power providers.
B UT it may take much longer before drivers or regulators accept it.
Being called before federal regulators is a blow to a company that had seemed to be on a roll.
Mr. Greenberg is set to appear before regulators on April 12.
Both combinations are before antitrust regulators in Europe and the United States; a ruling is expected later this year.