Four fire engines and around 25 firefighters were called to a fire at a house on Houndsden Road in Enfield.
The whole of the roof and solar panels were destroyed by fire in the detached two storey house.
Th Brigade's 999 Control officers received a call at 2057 and mobilised fire crews from Southgate, Edmonton and Barnet fire stations. The incident was under control by 2342.
The cause of the fire was accidental and due to an electrical event in mains wiring.