Lightning storms caused a major power cut across hundreds of properties in the early hours of yesterday morning.
Damage was caused to electrical transformers that help provide supply to homes and businesses.
Much of the disruption was in the West Side. Scottish and Southern Energy said Walls was closest to the damage, where 269 properties lost power.
A similar number – 250 – lost power between Voe and Aith and 169 properties lost power in the North Mainland.
At lunchtime, SSE said most of the power had been restored, with only a handful of properties waiting to get their power back.
The company said it was in the process of replacing the damaged transformers and apologised for any inconvenience experienced by customers.