Power company Vector is unable to say how a so-called "world first" to light up the Auckland Harbour Bridge by solar power will work.
Two months ago, Vector and Auckland Council said the bridge would be the first in the world to be illuminated entirely by solar-stored energy.
The project partners said the bold plan to transform the city skyline at night and create a global attraction would be powered by 630 solar panels on top of North Wharf at Wynyard Quarter and a mega-storage battery.
I think it is very likely that the solar panels and battery simply feed into the grid at Wynyard Quarter and they take the power from grid just as they always have
"Powered by solar energy, it will reflect our commitment as a city to energy efficiency, sustainability and low carbon emissions," Auckland Mayor Phil Goff said two months ago.