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Contribution to Government's Policies and Objectives


Submission on the Motorimu Wind Farm Development

[ Last Updated 25 August 2008 ]


As stated above, the Motorimu Wind Farm wind farm development would contribute to the government's stated objectives for the energy sector (energy efficiency and security of supply with an increasing focus on renewables) and is consistent with the principles for sustainable development.

Security of Supply

Ensuring security of electricity supply is a critical issue for all New Zealanders and for the government. There are two aspects to security of supply. Firstly, it is imperative to minimise the risk associated with dry years and secondly to ensure that New Zealand has the generation capacity over the long term to meet the projected growth in energy demand.

Dry Year Risk

Heavy reliance on hydro-generated electricity leaves New Zealand vulnerable to the effects of dry years. 2001 was very dry in the South Island hydro catchments and 2003 was similarly severe, necessitating public electricity conservation campaigns. Dry years highlight the dependence of both consumers and industry on energy as a key element of infrastructure and, consequently, how essential security of supply is.

One of the considerable advantages of electricity generated by wind is that it can help complement hydro as typically there is still wind available in dry years or expected periods of low rainfall enabling water to be conserved. The proposed Motorimu Wind Farm wind farm could help ensure continued electricity supply for both New Zealand consumers and industry during dry periods.

Growth in Energy Demand

A further aspect of security of supply is ensuring that New Zealand has sufficient generation capacity to meet the forecasted growth in energy demand. The recent Energy Outlook provided by the Ministry of Economic Development projects that the composition of New Zealand's energy supply and demand will change as the demand for energy increases, the Maui gas field declines and new technologies for the production, delivery and use of energy become more economically viable.

The Energy Outlook considers a range of scenarios, all of which predict increased electricity demand, ranging from an average of 1 percent per annum to 1.5 percent per annum over the period to 20304. There is some evidence to suggest that in the shorter term, increases in demand may be higher than these figures. Analysis of Grid Exit point data from 1999 - 2005 indicates that electricity demand is currently increasing in the range of 2.0 to 2.5 percent on average per annum.

It is important that, as the means become available, New Zealand undertakes the transition to renewable energy sources to ensure that we have the capacity to accommodate the growth in demand and to compensate for the likely decline in the availability of indigenous gas. The proposed Motorimu Wind Farm wind farm would contribute to the increased generation capacity required to satisfy demand while at the same time reducing New Zealand's dependence on non-renewable energy sources.

Sustainable Development Programme of Action for Energy

The Sustainable Development Programme of Action is one of the Government's major over arching documents designed to guide and underpin policy development. Energy has been identified as one of the target areas for sustainable development because of its correlation to economic growth, potential environmental impact, and because both consumers and businesses are heavily reliant on its supply.

The major objective of the programme of action for energy is to ensure continued delivery of energy services to New Zealanders. It acknowledges that renewable energy sources, such as wind power, will become increasingly important in providing security of supply and in mitigating harmful effects that energy use can have on the environment.

A sustainable energy discussion document, which establishes a policy framework within which energy choices can be considered going forward, was released on the 27th of October 2004. The document states that sustainable energy must be:

  1. reliable and resilient;
  2. environmentally responsible; and
  3. efficiently and fairly priced.

There are a number of specific energy and energy and energy-related policies and strategies that contribute to sustainable energy objectives, including the National Energy Efficiency and Conservation Strategy, the climate change initiatives and the Government Policy Statement on Electricity Governance. The proposed Motorimu Wind Farm wind farm is consistent with the actions outlined in these documents5.

National Energy Efficiency and Conservation Strategy

The National Energy Efficiency and Conservation Strategy (NEECS) is the government's primary means to achieve outcomes sought in the sustainable development programme of action. The purpose of the NEECS is to facilitate the move towards a sustainable energy future for New Zealand by promoting energy efficiency, conservation, and a transition to the use of renewable energy sources.

The NEECS identifies two key policy directions that support New Zealand's movement towards a sustainable energy economy.

  1. Ongoing improvement in our energy efficiency

Target: By 2012, energy efficiency throughout the economy will improve by at least 20 percent. This target is equivalent to a continual improvement rate of two percent per annum to 2012.

Progressive transition to renewable sources of energy

Target: By 2012, renewable energy sources will generate an additional 30PJ of energy above 2000 levels. In 2000, renewable energy sources provided 133.5PJ, or 29% of consumer energy. The target means that by 2012, renewable sources should generate a minimum of 163.5PJ of consumer energy, which would equate to approximately a 30-35% market share.

It is estimated that a wind farm development, like the Motorimu Wind Farm wind farm, could provide up to 410 million kilowatt hours of electricity a year, or 1.476 petajoules, which is approximately 4.9% of the renewable target.

Government Policy Statement on Electricity Governance

The Government's overall objective for the electricity industry is to ensure that electricity is produced and delivered to all classes of consumer in an efficient, fair, reliable and environmentally sustainable manner and to promote and facilitate the efficient use of electricity.

The government has identified a number of desired outcomes consistent with the above objective. The proposed wind farm would particularly contribute to achieving the following outcomes:

  1. the electricity sector contributes to achieving the government's climate change objectives by minimising hydro spill, efficiently managing transmission and distribution losses and constraints, promoting demand-side management and energy efficiency and removing barriers to investment in new generation technologies, renewables and distributed generation; and
  2. risks (including price risks) relating to security of supply are properly and efficiently managed.

Resource Management (Energy and Climate Change) Amendment Act 2004

The Resource Management (Energy and Climate Change) Amendment Act 2004 has recently been passed by Parliament. It seeks greater alignment between local government plans and national energy objectives outlined in the NEECS and climate change policies, and aims to ensure that councils consider the contribution their regions can make to meeting New Zealand's commitments under the Kyoto Protocol.

Specifically the Act has amended section 7 (other matters) of the RMA to require decision-makers to have particular regard to the efficient use of energy, the effects of climate change, and the benefits associated with the use and development of renewable sources of energy.

The New Zealand Energy Strategy

Building on the current central government energy policy context the government has announced the development of the New Zealand Energy Strategy (NZES). This reflects the need for government to take strong leadership and set a clear long-term direction to ensure New Zealand is well-placed to respond to the future energy security and climate change challenges it faces.

The strategy will identify priorities and develop an action plan to move towards achieving the government's sustainable energy objectives of reliable and resilient; environmentally responsible; and fairly and efficiently priced energy services for current and future generations.

The development of the strategy will be well-coordinated with the related work – particularly the NEECS and climate change work programme. The NZES will focus on the long-term strategic direction for the energy system and create a stronger national policy framework for renewable energy and energy efficiency.

The success of national policy and recent legislative changes in support of sustainable energy practices depends to a considerable degree on its application at the local level.

The draft strategy will be released in late December 2006. The Ministry would encourage the consent authority to take into account the government's direction and energy objectives as set out in the NZES and the NEECS when it becomes available.

4. The Ministry requests that the consent authority make the following decision:

Grant resource consent to Motorimu Wind Farm Limited to establish, operate and maintain a wind farm known as 'Motorimu Wind Farm'.

5. The Ministry may wish to be heard in support of its submission.


4 Ministry of Economic Development, Energy Outlook to 2030,September, 2006, p.24-25.

5 While the Motorimu Wind Farm could contribute to the outcomes identified in the Sustainable Development Programme of Action, we acknowledge that the load factor for a wind turbine means that wind power is not a predictable energy source over short time periods, such as a specific day or hour.  However, New Zealand’s considerable wind resource, relative to most other countries, means wind energy will be more reliable here than overseas.

Assumptions of the Energy Outlook's Reference Scenario:
  • After 2011, with the size of the labour force stabilizing, GDP growth rates trend down to the long-run labour productivity growth rate, assumed to be 1.5%.
  • Exchange rates to 2009 are based on New Zealand Institute of Economic Research (NZIER) projections. For 2010 and thereafter, the exchange rate is assumed to be 0.60 US$/NZ$, which corresponds roughly to its average value since the floating of the New Zealand dollar in 1985.
  • Oil prices are assumed to remain at US$60/barrel throughout the model time horizon.
  • New gas discoveries are assumed to average 60 PJ/year, with production from new discoveries starting in 2012. This number represents the historical average (excluding the Maui field).
  • The price of imported gas (LNG or CNG) is assumed to be a function of the oil price based on the Japanese Crude Cocktail formula.
  • Coal is assumed to be priced at NZ$3.50/GJ in 2010 rising to NZ$4.00/GJ by 2015 at the import terminal. An additional $0.40/GJ is added for inland transportation to the Huntly power station.
  • Costs of additional generation capacity are based on Electricity Generation Supply Cost & Availability reports prepared by East Harbour.
  • In general, energy efficiency improvements are assumed to proceed at historical rates. However in our model of on-road transport use we make specific assumptions about vehicle fuel economy, which are discussed in further detail in Section 5.1.4. of the Energy Outlook.
  • No carbon tax.

The Energy Outlook to 2030



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