Millions of pounds will be sought to bring even more electric buses to the streets of Norfolk.
Officers at Norfolk County Council are drawing up an application to bid for a share of a £129m pot of cash which is being made available by the Department for Transport.
The government is making the money available through the second phase of its Zero Emission Bus Regional Areas (ZEBRA) scheme.
County Hall received almost £15m from the initial phase of that scheme. First buses added £21m to that sum to pay for Norwich to get 70 zero-emission electric buses.
The first of those new buses are already being used by passengers on city routes, with more to follow.
And the Roundtree Way bus depot will become one of the first fully electric bus depots outside of London.
But the council is keen to get more money for more buses from the next phase of the ZEBRA scheme, and was one of almost 60 authorities which, earlier this year, lodged expressions of interest for further cash.
The government has given County Hall the green light to submit an application for more money, which needs to be submitted by Friday, December 15.
The council said it was too early to give further details, but confirmed that talks with a number of bus operators had taken place.
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A council spokeswoman said: "We are currently preparing an application for tranche 2 of the Zero Emission Bus Regional Area (ZEBRA) with several bus operators in Norfolk but we are not in a position to disclose any specific information on this as nothing is yet finalised.
"The main aim of this application is to secure funding to bring additional zero emission buses to Norfolk."
Transport secretary Mark Harper said: "Funding for more zero emission buses will help decarbonise public transport and grow the economy by keeping our communities connected.
"We have already reached our initial target of funding at least 4,000 zero emission buses and this additional funding will improve journeys for even more passengers, reaching those in the most remote areas."
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