As consumer advocates called for a review of BGE's PeakRewards program, the utility said Monday that more than 3,800 customers have dropped or modified their participation after seeing air conditioners cycled off for hours Friday — the hottest day in 75 years.

Advocates for seniors and consumers, while praising the program's goals, said they and Baltimore Gas and Electric Co. must do a better job counseling customers who sign up for the voluntary program.

Hank Greenberg, state director of AARP Maryland, said PeakRewards is a good program, but "these last few days showed there's a need for some review and some better communication. … You may have signed up three years ago and not even remember."

BGE officials acknowledged Monday that the program, which eases energy consumption when demand spikes, encountered problems Friday, including jammed radio signals and overwhelmed customer service phone lines. The utility received 41,000 phone calls from Friday through 10 a.m. Monday, the company said.

"With no experience with PeakRewards cycling, we didn't realize we should have gone into what we call 'storm mode,'" taking only calls about outages and PeakRewards, said Jeannette M. Mills, chief customer officer for BGE. Callers with questions about the program also took longer to process than routine outage reports, she said.

After the problems Friday — when Baltimore's temperature hit 108 — BGE officials plan to review the program to see what improvements can be made. They may use technology to send automated phone messages to consumers and try to put more information on the company website, Mills said.

BGE will remove any customer from the program immediately if they are dissatisfied, even during an emergency event, said Mark D. Case, senior vice president of strategy and regulatory affairs. But the company won't allow customers to sign up again later and continue receiving credits on their bills. "We don't want to encourage gaming of the system," he said.

Customers receive bill credits in return for allowing BGE to cycle off some or all air conditioning when overall power demands are high. Since the program started, participating customers have received $22 million in credits, Case said.

Of the approximately 450,000 BGE customers enrolled in the program, 2,500 have dropped out since last week and an additional 1,300 have reduced their level of cycling, Case said. The company plans to send letters to all those who are enrolled to ask whether they want to continue to participate at their current cycling levels.

"We're going to proactively remind customers what they signed up for and whether they wish to continue," Case said. "At the end of the day, we want customers to be satisfied with this program."

Only about 20 percent of PeakRewards customers are signed up for 100 percent cycling, Case said.

Carolynn and Richard Geer are among them. Their thermostat's peak reading on Friday reached 99 degrees after having their air conditioning turned off for nine hours.

Carolynn Geer, 62, and her 79-year-old husband, both retired and on Social Security, also run small businesses out of their Phoenix home and spent the entire day sweltering in the ever-rising temperatures.

"We don't go to an office where there's air conditioning," she said. "We were sick … we almost got physically sick from the heat."

She said they spent the entire day in the basement. It was cool at first but by the end of the day, "even the basement was too hot."

When she signed up for the program about six months ago, she thought the air conditioning would just turn off and on for a few hours at a time. "I didn't realize that they could totally shut our air off for that amount of time," she said.

Still, she wants more information about the program before they opt out. "We can't go through this again," she said. "I can't risk it."

State utility regulators said they constantly monitor progress of programs like PeakRewards and are reviewing the complaints about the program, but fewer than a dozen were received as of Friday afternoon. Additional complaints came in over the weekend and were being tabulated.

"Last week's heat wave has been the first real test of those programs, and there, undoubtedly, are lessons that we and the companies will learn from this test," said PSC Chairman Douglas Nazarian in a statement.