Cost of capital
The cost of capital is the financial return investors require from an investment given its risk.
Input methodologies for electricity distribution services were determined in December 2010.
Amendments and clarifications
On this page you can find input methodologies related correspondence. From time to time the Commission may also publish updates on process relating to input methodologies.
Transpower input methodologies
The input methodologies determination for Transpower includes input methodologies that apply to individual price-quality regulation and input methodologies that apply to information disclosure regulation.
Input methodologies for gas pipeline services were determined in December 2010.
Consultation prior to December 2010
The requirement to develop input methodologies was one of the key changes to the Commission's regulatory responsibilities under the Commerce Amendment Act 2008.
Input methodologies for specified airport services supplied by the companies operating Auckland, Christchurch and Wellington International Airports were determined in December 2010.
Litigation outcomes related to Input Methdologies determined by the Commission in December 2010.