A power outage is never just an inconvenience for a business — it is a direct financial event. According to a Federation of Small Businesses (FSB) study, power outages cost UK companies an average of £11,000 per hour. For larger organisations, that figure climbs considerably higher. For businesses in sectors where downtime affects safety, compliance, or perishable assets, the consequences go well beyond revenue loss. This article identifies which UK industries carry the highest exposure to power failure — and why a backup generator is not optional for them.