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SAN DIEGO (KGTV) – Another heat wave in the forecast could leave Californians in the dark this weekend. San Diego Gas and Electric is preparing for a hot weekend as high temps are expected to cause more strain on the power grid.Energy officials are hoping to avoid a repeat of last month when rolling blackouts swept through the state for the first time in 11 years.The California Independent System Operator, or CAISO, was forced to order blackouts in response to high demand.“For the grid to operate, demand on the grid needs to be matched evenly with supply,” said Helen Gao with SDG&E.Ahead of the heat this weekend, SDG&E meteorologists are closely monitoring conditions.At this point, CAISO says they haven’t told SDG&E to prepare for rotating outages over the weekend. CAISO says it plans to issue a Flex Alert, which it says is a voluntary call for conservation.CAISO said the recent rotating outages were the result of a number of factors, including generation units being out of service, reduction of the amount of energy California was able to import from other states, and a sudden drop in wind energy.If CAISO issues a flex alert, the power company will activate their demand response programs. It encourages customers to cut back on energy use to reduce strain on the grid. Outages would only be ordered by CAISO as a last resort. On Tuesday, the State Water Resource Control Board took action to prevent more outages in the future. They’re now along four gas power plants to continue operations past 2020. They were set to stop production as California transitions to cleaner energy sources. The extended deadline is expected to ease the strain on current systems while new energy and storage resources are being built.If an outage is planned for a neighborhood, SDG&E says they try to give all customers a heads up before the lights go out.How these rolling outages workRolling outages are a method that CA ISO uses to take the load off of California's power grid. When the state says the grid is under too much stress, each utility in the state has a percentage of electricity that needs to be taken off of the grid to meet whatever wattage CA ISO is aiming for, according to SDG&E. That amount that a utility will be asked to cut during these rolling blackouts is approved with CA ISO regulators every year.SDG&E determines which neighborhoods will be impacted by creating a list of blocks. Each of those blocks accounts for about 25 megawatts of electricity. Once CA ISO tells SDG&E how much power it needs to cut, SDG&E goes down that list from the top, de-energizing blocks until it is told to stop.The next day, the company picks up where it left off on the list, so that the same neighborhoods aren't affected every night. Once SDG&E goes through its entire list, it starts at the top again.Outages can last up to an hour but can also be relatively quick. Saturday, the first block de-energized lasted for about 17 minutes, according to the company.What you can do to helpTo avoid rolling blackouts, officials say the best way is to take energy conservation seriously. Because these outages are issued by the state, conservation is needed by all Californians in these instances.Officials recommend setting the thermostat at 78 degrees, turning off unnecessary lights and electronics, and using appliances before 3 p.m. to help save power.During power shutoffs, SDG&E suggests customers turn off air conditioners, keep refrigerator and freezer doors closed, and reduce their water use due to the need for electricity to pump and process water. For electric vehicle owners, charging should be delayed if possible until after the emergency shutoffs, SDG&E said.SDG&E offers more safety tips to keep in mind during an outage here. 3805

SAN DIEGO (KGTV) — As San Diegans ready their votes for the fate of Mission Valley's SDCCU Stadium site, a new poll indicates the likelihood of competing measures for the area.In a 10News/San Diego Union-Tribune poll conducted by SurveyUSA, Measure E, also known as the Soccer City Initiative, currently trails 3 to 2 among those surveyed.Measure G, known as SDSU West, leads 2 to 1 among those surveyed.RELATED: 430

SAN DIEGO (KGTV) -- Authorities have identified the woman who died after being hit by an armored vehicle in La Jolla Tuesday night. The medical examiner reported that Mikaela Jones was killed after walking out in front of the armored vehicle on the 8600 block of Villa La Jolla Drive around 5 p.m. Police confirmed Tuesday night that the incident had happened on the young woman's 22nd birthday. At this time, the moments leading up to Jones' death are unclear.  505

SAN DIEGO (KGTV) -- At least one San Diego woman is a part of thousands who've volunteered to participate in a human challenge trial to find a vaccine for COVID-19. April Simpkins is a healthy 29-year-old. Simpkins said she felt helpless watching as the pandemic spread around the world, until she heard about 1 Day Sooner while listening to a podcast. 1 Day Sooner is an organization that advocates for volunteers willing to participate in a human challenge trial. The trial means being infected with COVID-19 in hopes of speeding up the process for a vaccine. The trial is restricted to young and healthy people. So far, there is no plan for any human challenge trials to fight COVID-19, but over 30,000 thousand people, from over 140 countries, have signed up to volunteer. The hope is to have the list of volunteers ready, if and when such a trial is approved. The trial would still require approval from a type of medical ethics board and from the Food and Drug Administration. To find out more about 1 Day Sooner click here. 1038

SAN DIEGO (KGTV) — Barbie fans will undoubtedly recognize the toy icon's 90s flashy ride in San Diego this weekend.No, we're not talking about her hot pink convertible. Just in time for the holidays, the Barbie Truck will stop at Westfield UTC on Saturday, Dec. 7, during the toy's "Totally Throwback Tour." The truck — similar to the Hello Kitty Cafe Food Truck — will offer shoppers exclusive, retro-inspired gear and treats as part of its tour.The cross-country tour is meant to celebrate the nostalgia of the 90s and Barbie's 60th anniversary.RELATED: Pop-up bars, yuletide events hit San Diego this holiday seasonAt the truck, Barbie fans can choose from a variety of themed merchandise, including a vintage denim jacket, t-shirts, pins and patches, cassette tape wallets, fanny packs, cosmetics, decorated cookies, and more.The truck only accept credit cards and products range in price from - . The truck will be open at Westfield UTC from 10 a.m. to 8 p.m. 979

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