AND HOW CUSTOMERS GETTING READY. EMILY: INSIDE HIS GARAGE, DAN EVERETT PULLS OFF THE BAG COVERING HIS GENERATOR. >> SHE CAN DO THE REFRIGERATOR, SHE CAN DO THE TV, DO THE MICROWAVE, YOU KNOW, A VARIETY OF ITEMS. EMILY: HE BOUGHT IT AFTER LOSING POWER MULTIPLE TIMES LAST YEAR. >> WE GOTTA KEEP THE FOOD COLD. WHATEVER THE HOUSEHOLD NEEDS, WE'VE GOT TO HAVE IT ON THERE, ELECTRICITY FOR THAT. EMILY: THIS SUMMER, ROLLING BLACKOUTS COULD BE BACK, BUT THE CEO OF CALIFORNIA’S LARGEST ENERGY OPERATOR, THE CALIFORNIA INDEPENDENT SYSTEMS OPERATOR, OR CAL ISO, IS HOPING TO AVOID THEM. CAL ISO INVESTED IN MORE MEGAWATTS TO POWER THE GRID, BUT SAYS EXTREME HEAT CAN ALWAYS POSE A THREAT. LAST SUMMER, HUNDREDS OF THOUSANDS OF CUSTOMERS WERE TEMPORARILY LEFT IN THE DARK, WHEN THE DEMAND ON THE POWER GRID THREATENED TO OUTPACE SUPPLY. >> IT IS FRUSTRATING, AND BEING A SLAVE TO THE BIG POWER COMPANIES. I MEAN IT IS WHAT IT IS. EMILY: TROY MOSACK, WHO LIVES IN DIAMOND SPRINGS, SAY THE OUTAGES WERE TOUGH ON HIS BUSINESS. >> BEING A SMALL BUSINESS OWNER, IT KIND OF SHUT MY BUSINESS DOWN. >> JUST ANOTHER DAY IN THE NEIGHBORHOOD. EMILY: AS SOME GET READY FOR WHAT’S EXPECTED TO BE AN EXTREMELY DRY AND HOT SUMMER, WITH THE POSSIBILITY FOR ROLLING BLACKOUTS, OTHERS, LIKE GARY NEWMAN, ARE MAKING THE BEST OF IT. >> WHY THROW A BIG PANIC? DEAL WITH IT. AND IF A GENERATOR IS DEALING WITH IT, GET A GENERATOR. YOU KNOW? EMILY: IN GENERAL, ONE MEGAWATT CAN POWER HUNDREDS OF HOMES, DEPENDING ON HOW IT’S GENERATED. CAL ISO HAS ALSO INVESTED IN STORAGE IN THE FORM OF LITHIUM BATTERIES, WHICH WOULD ALLOW SOLAR AND WIND POWER TO BE USED, EVEN IF THE SUN IS DOWN OR THE WIND ISN’T BLOWING. EMILY MAHER, KCRA 3. EDIE: A SPOKESPERSON FROM CAL ISO SAYS CREWS ARE MONITORING WEATHER CONDITIONS.