2013 Mighty River Power Results of annual meeting

NEWS RELEASE 7 November 2013 NZX: MRP

ASX: MYT

Results of Annual Shareholders’ Meeting At the Annual Shareholders’ Meeting of Mighty River Power Limited held on Thursday 7 November 2013, shareholders approved the following resolutions set out in the Notice of Meeting dated 9 October 2013.

Director re-elections − − −

Joan Withers was re-elected as a director Keith Smith was re-elected as a director Tania Simpson was re-elected as a director

Director’s fees The total remuneration payable to all directors taken together was increased by $85,000 per annum, such amount to be available for fees payable to an additional director to be appointed by the Board.

Voting details Re-elect Joan Withers as a director For: 950,189,245 Against: 2,564,925 Total votes received: 952,754,170 Re-elect Keith Smith as a director For: 946,351,437 Against: 6,312,206 Total votes received: 952,663,643 Re-elect Tania Simpson as a director For: 949,720,495 Against: 2,825,448 Total votes received: 952,545,943 Directors’ fees: For: Against: Total votes received:

945,945,767 6,640,487 952,586,254

Independent Directors In terms of NZX Listing Rule 3.3.3 the following directors, being all of the Company’s directors, were determined by the Board following the Annual Shareholders’ Meeting as Independent Directors: Joan Withers Trevor Janes Michael Allen Prue Flacks James Miller Tania Simpson Keith Smith

Election of Chair The Board has met and confirmed the election of Joan Withers as Chair of Mighty River Power. Pursuant to clause 35.1 of the Company’s Constitution, the Minister of Finance has approved Mrs Withers as Chair of the Company.

ENDS

For further information: Tony Nagel Company Secretary T 09 398 8227

Anna Hirst Head of Investor Relations T 0275 173 470

Mighty River Power is one of New Zealand’s largest electricity companies – with its core business based on reliable, low fuel-cost electricity generation complemented by sales to homes and businesses.

The Company generates about 17% of New Zealand’s electricity. It operates the nine hydro stations on the Waikato River, five geothermal power stations in the Central North Island and a multi-unit gas-fired station in Auckland. More than 90% of its electricity production is from renewable sources. Mighty River Power sells electricity through multiple channels and retail brands, including Mercury Energy, GLO-BUG, Bosco Connect and Tiny Mighty Power. Mighty River Power’s metering business, Metrix, provides electricity retailers with advanced metering infrastructure solutions for their residential and commercial customers.

Mighty River Power is one of the world’s largest geothermal power station owners, and has a successful track record in geothermal development, investing more than $1.4 billion in geothermal development since FY2006. The Company is applying this capability and experience – gained through domestic geothermal exploration, development, construction and operations – to invest in international growth opportunities.