The Long Island Power Authority (LIPA) has put forth a scathing report on PSEG Long Island’s botched response to Tropical Storm Isaias that left thousands across Long Island in the dark for days.

LIPA says the power company had major management problems and knew its telephone and automated outage-reporting system was faulty.

“PSEG Long Island's failures during Tropical Storm Isaias could have been avoided,” according to LIPA CEO Tom Falcone. “LIPA customers deserve top-notch management and first-class customer service.”

PHOTOS: Tropical Storm Isaias 

Among the "significant findings" in the report were:

Now the power authority is demanding PSEG Long Island make changes in the next 90 days.

State Sen. Todd Kaminsky says LIPA’s demands are well deserved since little has changed at PSEG Long Island. He adds LIPA now must either renegotiate its contract with the utility or find another company to run the power grid on Long Island.

“The most damming part of this report, and should concern every Long Islander, is that if there was another outage today, PSEG couldn’t manage it any better than they did back in August,” he says.

In a statement sent to News 12, PSEG Long Island says, “We remain fully committed to understanding what went wrong and continue to improve our organization and our systems to avoid similar failures in future storms.”