Street lights could be switched off or dimmed to save energy
Thousands of street lights in towns and villages across East Yorkshire could be switched off at night in a bid to slash the council's electricity bill.
East Riding of Yorkshire Council is considering the move as it anticipates its energy costs will rise by 18% to more than £3m this year.
As well as a post-midnight switch-off, it is also considering dimming lights to save energy.
Councillors stressed lights would not be turned off in crime hotspots.
Residents are being asked to give their view of the proposals as part of a wide-ranging council survey of 6,000 households.
Dave Williamson, of the council's street lighting department, said: "The cost of energy has doubled over the last few years.
"Street lighting is a very efficient user of energy but the quantity of lights means that it costs nearly £900,000 every year to keep them lit.
"We are looking at ways to reduce the amount of energy we use, which will limit some of the cost increases and help the planet by reducing our carbon footprint."
Switching lights off between midnight and 0500 would reduce the amount of energy used by each light by 70%, the council said. Even dimming them would save about 27%, it added.