Tauranga successfully led the New Zealand Earth Hour celebrations in recognition of the community's efforts to clean up the environment following the Rena oil spill, say organisers.

More than 1500 people, including families with young children, ventured along to Sulphur Point for a night market and acoustic concert to mark Earth Hour on Saturday.

Tauranga children with lanterns at the Earth Hour event at Sulphur Point. Photo Aaron Bryant.

WWF communications manager Rosa Argent says a pledge wall attracted 1000 planet-saving promises from locals, including recycling more to driving less and conserving water.

In return, Bayfair Shopping Centre will donate one dune plant for every pledge.

Pledges are being made around the city, with the TCC and Bayfair Shopping Centre teaming up to invite others to pledge an action for the benefit of the environment.

Mayor Stuart Crosby has made a commitment to support the environmental recovery plan for Rena and other have committed to starting a worm farm, install insulation or reduce their car trips.