The fire service was called out to a fire next to an old people's home in Market Harborough this morning (Friday).
The fire destroyed an electricity sub-station next to Marshall Court, off Northampton Road. The home itself lost all power apart from emergency lighting, but was otherwise not affected.
A spokesman for Marshall Court said a resident spotted the sub-station and neighbouring hedge alight at about 9am.
It is not yet known how the fire started.