Sri Lanka suffers six-hour nationwide blackout

By the Editorial Team · Sunday, October 18, 2026

Sri Lanka experienced a nationwide power outage on October 17 due to an imbalance caused by solar power generation exceeding electricity demand, leading to a six-hour blackout. The incident highlights ongoing challenges in integrating rapidly growing solar capacity into the national grid, prompting officials to find ways to maintain stability as renewable energy use expands.

Sri Lanka experienced a nationwide power outage on October 17, leaving the country without electricity for approximately six hours. The disruption began around midday and affected the entire national grid, which serves the island nation’s population of about 22 million people, the state electricity authority reported.

Energy Minister Anura Karunathilaka indicated that the precise cause of the blackout remains under investigation. However, initial assessments suggest that an imbalance arose because solar power generation on that day exceeded electricity demand. The incident occurred during a weekend holiday when consumption levels were relatively low, while solar output remained high under clear weather conditions.

The nationwide blackout was resolved gradually by dusk after authorities issued multiple requests for owners of rooftop solar installations to temporarily disconnect their systems. This measure helped stabilize the grid and allowed technicians to restore power incrementally across the country.

This episode marks the second major nationwide grid shutdown caused by similar conditions, following an event in February 2025. On that occasion, solar power generation again surpassed consumer demand on a bright Sunday, leading to a complete shutdown of the grid and a restoration process that lasted over six hours.

Sri Lanka has seen rapid growth in its solar power sector, with installed capacity now exceeding 3,000 megawatts (MW). Daily electricity demand during daylight hours typically ranges from 2,000 MW to 2,500 MW. The government’s encouragement of solar adoption, including tax incentives that allow consumers to sell surplus electricity back to the grid, has accelerated this growth but also contributed to challenges for electricity providers in managing grid stability.

The government aims to expand solar power generation capacity further, targeting nearly 4,400 MW within three years—a planned increase of approximately 388 percent from 2024 levels. Officials continue to seek solutions to balance renewable energy integration with stable national power supply as demand patterns evolve.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.