Storm Desmond floods Lancaster substation, cutting power to 61,500 people

Storm Desmond brought record rainfall to north-west England in early December 2015. On 5 December, the River Lune burst its banks in Lancaster and floodwater inundated an electricity substation, forcing it offline.

Around 61,500 people lost power, many for much of the day and some for longer. The outage was not just an inconvenience. It disrupted water supplies, transport and communications, including mobile phone coverage, which made it harder for residents and emergency services to coordinate. Lancaster and surrounding areas were left coping with flooding and darkness at the same time.

The event mattered because it showed how heavily modern life depends on a single piece of infrastructure, and how a local failure can spread to other essential services. It became a frequently cited example in British discussions of resilience, including planning for longer and wider blackouts, and prompted attention to protecting critical sites from flooding.