Each of the 15 states along the 115-mile path of totality, in which the sun will be completely eclipsed for a short period of time, have a different mix of power sources feeding their grid. From the moment the moon\u2019s shadow begins to creep across the sun, until it relinquishes its grip, their systems will have to switch it up. <\/p>\n\n\n\n
Even a small shadow on the sun directly translates to lost energy. Batteries and other renewable energies, like wind, are expected to pick up some of the slack. However, even a leading clean-energy state like California, which will only experience a partial eclipse, may need to tap into its fossil fuel resources to keep up with demand, said Peroomian. \u201cThe impact is going to be nationwide.\u201d<\/p>\n\n\n\n
The eclipse is a challenge states can prepare for, highlighting how a renewables-dependent grid might deal with sudden weather changes, equipment failure, and other outage-causing events. According to the U.S. Energy Information Administration, or EIA, utilities are also anticipating increased demand from homes and businesses that rely on small-scale solar<\/a>, which may instead need to draw power from the grid.<\/p>\n\n\n\n Texas is the largest state to experience totality and has a couple of unique factors making it the ultimate testing ground for solar reliance. While other states tap into a larger regional utility system, Texas is an energy island and its grid primarily uses energy produced in-state. It\u2019s also recently become a nationwide leader in solar energy<\/a>, with nearly a 3,700 percent increase in the last decade. In most of the state, the eclipse will momentarily blot out some ninety percent of that power.<\/p>\n\n\n\n \u201cIt is perfectly timed to have maximum impact,\u201d said Joshua Rhodes, an energy researcher at the University of Texas at Austin, who says the eclipse will pass over the state at \u201csolar noon\u201d, the time when the sun is highest in the sky and produces the most energy. But having collaborated alongside the state\u2019s utility provider, ERCOT, for 14 years, Rhodes is confident that the grid is ready for the event. \u201cI mean really we do this every day,\u201d he said. \u201cA cloudy day could create the same kind of gap that we\u2019re going to see on Monday.<\/p>\n\n\n\n Following a winter storm in 2021 that caused days of blackouts, Texas invested in grid resilience<\/a>, emphasizing renewables and giant power-storing batteries, which can provide energy when sources go offline. But the state still relies on fossil fuels for roughly 60 percent<\/a> of its energy. In 2023, when a partial solar eclipse passed over, the loss of energy caused the amount of natural gas used to almost double<\/a> momentarily.<\/p>\n\n\n\n Still, while the eclipse offers a look at our continued reliance on fossil fuels to meet demand, the recent prevalence of energy storage indicates a shift towards cleaner resilience. Today, according to the EIA, the U.S. has 15.4 gigawatts of battery storage<\/a>, capturing solar and wind energy to release when needed. During the 2017 eclipse, the U.S. had only 0.6 gigawatts of these reserves. Even with the lost sunlight, the agency said it expects solar to be the third-largest energy source in the U.S. on eclipse day.<\/p>\n\n\n\n April 8 will also likely see increased emissions from another source: the crowds that will flood into cities along the path of totality, in numbers akin to 50 Superbowls<\/a>, with most arriving in gas-guzzling planes and cars. In largely rural Vermont, some fear miles of stopped, idling traffic<\/a>, overwhelming the state\u2019s backroads and highways.<\/p>\n\n\n\n \u201cOur biggest consideration is if someone has an outage or something, you know, how do we actually get to them?\u201d said Andrea Cohen, manager of member relations at Vermont Electric Cooperative, which services 78 towns in the state\u2019s north. But when it comes to sourcing energy, Cohen says the utility is \u201cwell prepared\u201d for the eclipse, just as they would be on a bad-weather day.<\/p>\n This story was originally published by Grist<\/a> with the headline What the eclipse reveals about the progress and shortfalls of U.S. energy<\/a> on Apr 6, 2024.<\/p>\n![\"\"](\"https:\/\/grist.org\/wp-content\/uploads\/2024\/04\/GettyImagesECLIPSETRAFFIC.png?quality=75&strip=all\")