With major energy investments and new battery storage, San Diego’s grid is stronger—but rare threats like EMPs remain a concern – How Prepared Are We for Local Attacks or a Nuclear EMP?
San Diego’s power grid stabilitySan Diego, California (Times Media Service) – San Diego’s power grid is more reliable than ever, thanks to major investments in clean energy and battery storage. But experts warn that rare threats—like targeted attacks or a nuclear electromagnetic pulse (EMP)—could still put our electricity system at risk.
San Diego’s Power Grid: Stronger, Smarter, and More Resilient
San Diego’s power grid stability is a top priority for local utilities and state officials. Over the past five years, California has added more than 20,000 megawatts of new clean energy, and battery storage capacity has surged past 13,000 megawatts statewide. Locally, SDG&E is expanding its Westside Canal Battery Energy Storage facility to 231 megawatts, making it the largest in their portfolio and pushing total utility-owned storage in the region to nearly 480 megawatts by year-end. These upgrades help store solar and wind power, making the grid more flexible and reliable during peak demand and emergencies.
How Prepared Is San Diego for Extreme Events?
Officials say that California’s grid is now better equipped to handle climate-driven events like heat waves and wildfires. In 2024, the state did not issue a single Flex Alert, showing that investments in battery storage and smart grid technology are paying off. SDG&E’s new projects are designed to help keep the lights on even when disasters strike, and the company’s backup plans focus on supporting vulnerable populations during outages.
What If the Grid Faces a Local Attack?
While San Diego’s power grid stability has improved, experts caution that physical attacks on substations or critical infrastructure could still cause long-lasting blackouts. If several key substations are damaged at once, parts of the city could lose power for weeks or even months. Security upgrades and emergency planning are ongoing, but the risk remains, especially during periods of high demand.
The Nuclear EMP Threat: What’s at Stake?
A nuclear electromagnetic pulse (EMP) is a rare but serious threat to power grid stability. If a nuclear device exploded high in the atmosphere, the resulting EMP could damage electronics and power systems over a huge area. For San Diego, this could mean widespread blackouts, loss of water and communications, and major challenges for emergency services. Recovery from such an event could take months or longer, depending on the damage.
Why Grid Stability Matters for San Diego
- Electricity powers homes, businesses, and hospitals.
- Water and emergency services rely on a stable grid.
- New battery storage helps keep the grid running during emergencies.
- Ongoing investments and planning are crucial for safety.
San Diego’s power grid stability is more robust than ever, but rare threats like local attacks or a nuclear EMP highlight the need for continued vigilance and investment.
Alexander Murphy / Science and Tech Writer (Times Media Service)
amurphy@timesmediaservice.com
