Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search


Strong winter demand met by hydro generation

Strong winter demand met by hydro generation

Strong hydro-electric production over winter helped ensure that New Zealand’s electricity supply met record demand during the cold months of June, July and August.

“Meridian’s hydro-electric plants have been running very hard since early May when high inflows filled up the big hydro storage lakes,” says Meridian Energy spokesman Alan Seay.

Further high inflows in late June and early July kept hydro storage at between 120 and 130 percent of average over much of the winter, and kept the turbines spinning hard at Meridian’s eight Waitaki hydro system power-stations as well as at Manapouri, New Zealand’s single largest hydro station.

The big hydro lakes of Tekapo and Pukaki, which Meridian manages, provide around two-thirds of New Zealand’s hydro storage capacity. Meridian over the year averages around 30 percent of national electricity production, but when the lakes are full this can rise to 40% or more.

‘Management of the big hydro lakes is extremely complex, and takes into account a wide range of supply and demand factors, environmental and recreational factors, as well as financial considerations.”

The hydro supply situation this year was the reverse of 2001 and 2003, when low inflows in autumn and winter meant that Meridian backed-off hydro generation in order to conserve water, while the Government instituted major conservation programmes to reduce demand.

The dry winter of 2001 had a serious impact on Meridian’s financial result, lopping around $50 million off its after-tax profit, which for the year ended 30 June 2002 was $84.0 million. Difficult hydrological conditions in the autumn of 2003 also affected the following year’s result, which was $109.3 million for the year ended 30 June 2003.

© Scoop Media

Business Headlines | Sci-Tech Headlines


Media Mega Merger: StuffMe Hearing Argues Over Moveable Feast

New Zealand's two largest news publishers are appealing against the Commerce Commission's rejection of the proposal to merge their operations. More>>


Approval: Northern Corridor Decision Released

The approval gives the green light to construction of the last link of Auckland’s Western Ring Route, providing an alternative route from South Auckland to the North Shore. More>>


Crown Accounts: $4.1 Billion Surplus

The New Zealand Government has achieved its third fiscal surplus in a row with the Crown accounts for the year ended 30 June 2017 showing an OBEGAL surplus of $4.1 billion, $2.2 billion stronger than last year, Finance Minister Steven Joyce says. More>>


Mycoplasma Bovis: One New Property Tests Positive

The newly identified property... was already under a Restricted Place notice under the Biosecurity Act. More>>

Accounting Scandal: Suspension Of Fuji Xerox From All-Of-Government Contract

General Manager of New Zealand Government Procurement John Ivil says, “FXNZ has been formally suspended from the Print Technology and Associated Services (PTAS) contract and terminated from the Office Supplies contract.” More>>