Residents are being warned of "critical" upgrades to the network in part of Guernsey.
The work is part of a programme to "enhance, replace and upgrade" the electricity network.
The massive outage has left homes, businesses and some essential services severely disrupted.
The 0% rate from October will apply to domestic customers and eligible firms on the Isle of Man.
Energy grids and train services are among the vital services that are vulnerable to very hot weather.
Scottish Power said 92 postcodes had been affected in the G44, G45 and G73 areas.
Arts by the Sea boasts a fire-breathing dragon and performers harnessing the power of electricity.
The next price rise of 5% is due to come in from July.
Godalming has a plaque marking the fact it is thought to be the first public electric street lighting.
