Consultation is under way for proposed oil and gas exploration permits covering more than 3000sq km in Hawke's Bay and 75,136sq km in the Pegasus-East Coast Basin.
The onshore exploration area runs inland from Waipukurau to the Ruahines and south to Pahiatua. Offshore it runs from Waimarama to the South Island, with a maximum permit area of 10,000sq km.
Energy and Resources Minister Simon Bridges said consultation with iwi and local authorities was "an important first step". "Their feedback ensures that any areas of sensitivity are carefully considered before the 2014 tender round is finalised.
"The annual block offer process presents a range of opportunities for investors and operators, who bring with them vast experience in global exploration and production of oil and gas," he said.
"While exploration won't necessarily be undertaken in all the blocks on offer, it's important to find out what's there and use the information to develop New Zealand's untapped resource wealth."