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Transpower New Zealand
Transpower New Zealand Limited (TPNZ) is the state-owned enterprise responsible for electric power transmission in New Zealand. It performs two major functions in the New Zealand electricity market. As the owner of the National Grid it provides the infrastructure of electric power transmission that allows consumers to have access to generation from a wide range of sources, and enables competition in the wholesale electricity market; as system operator it manages the real-time operation of the grid and the physical operation of the electricity market. Transpower was initially formed as an operating division of the Electricity Corporation of New Zealand (ECNZ) in 1987. In 1994 it was separated from ECNZ and corporatised to become a state-owned enterprise with its own board of directors and ministerial shareholders, the Minister of Finance and the Minister of State-Owned Enterprises. The New Zealand Treasury's Commercial Operations group (formerly the Crown Ownership Monitori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State-owned Enterprises Of New Zealand
State-owned enterprises (SOEs) in New Zealand are registered companies listed under Schedules 1 and 2 of the ''State-Owned Enterprises Act 1986''. Most SOEs are former government departments or agencies that were corporatised. They are responsible to the Minister for State Owned Enterprises. Many other government-owned companies and statutory trading organisations are referred to informally as "state-owned enterprises" although they are not SOEs in the strictest sense. These are also listed here. Function The function of SOEs is to operate successfully as a business, as profitable as those not owned by the Crown. The section of the Act defining this is usually interpreted as meaning that SOEs are expected to ready themselves for privatisation, though this is not always the case. Two Ministers of the Crown act as the shareholding ministers in the company. In the case of SOEs these are usually the Minister for State Owned Enterprises (see article for list) and the Minister r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury Energy
Mercury NZ Limited is a New Zealand electricity generation and multi-product utility retailer of electricity, gas, broadband and mobile telephone services. All the company's electricity generation is renewable. Mercury has a pre-paid electricity product sub-brand GLOBUG. Mercury Energy is also the largest electricity retailer in New Zealand. Mercury generates most of its energy from nine hydro stations on the Waikato River and five geothermal plants in the central north island as well as a number of wind farms. , Mercury had generated 3,611 GWh of electricity through hydro generation and 2,594 GWh through geothermal generation. Mercury also service industrial and wholesale market customers offering electricity and natural gas products. Since 2022 it has also offered internet fibre broadband services as a bundle for its residential electricity customers. Mercury has offices in Auckland, Tauranga, Hamilton, Rotorua, Palmerston North, Wellington and Oamaru. History In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Transmission System Operators In New Zealand
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the Work (physics), work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity Sector In New Zealand
The electricity sector in New Zealand uses mainly renewable energy, such as Hydroelectricity, hydropower, geothermal energy, geothermal power and increasingly wind energy. As of 2021, the country generated 81.2% of its electricity from renewable sources. The strategy of electrification is being pursued to enhance the penetration of renewable energy sources and to reduce Greenhouse gas emissions, greenhouse gas (GHG) emissions across all sectors of the economy. In 2021, electricity consumption reached 40 terawatt-hours (TW⋅h), representing a 0.2% increase compared to the consumption levels in 2010. The 2011–2021 Energy Strategy of New Zealand aims for a 90% share of Renewable energy, renewable electricity by 2025. Following this, the government raised its ambition by setting a goal of achieving 100% renewable electricity by 2030. The Ministry of Business, Innovation and Employment, Ministry of Business, Innovation, and Employment in New Zealand monitors several key enti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity Authority (New Zealand)
The Electricity Authority () is an independent Crown entity responsible for the regulation of the New Zealand electricity market. The Authority was established in November 2010, following a government review of the electricity industry, and replaced the Electricity Commission. The Authority has a narrower focus on industry competition, reliability and efficiency than the Electricity Commission had. Functions and responsibilities The key functions performed by the Authority are: * Registering industry participants * Developing and administering the Electricity Industry Participation Code * Monitoring and enforcing compliance with the Code * Acting as Market Administrator and contracting providers of market operations services * Facilitating market performance through information, best-practice guidelines and related services; and * Undertaking sector reviews Functions that were performed by the Commission, but which are undertaken by agencies other than the Authority include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commerce Commission
The Commerce Commission () (sometimes shortened to ComCom) is a New Zealand government agency with responsibility for enforcing legislation that relates to competition in the country's markets, fair trading and consumer credit contracts, and regulatory responsibility for areas such as electricity and gas, telecommunications, dairy products and airports. It is an independent Crown entity established under the Commerce Act 1986. Although responsible to the Minister of Commerce and Consumer Affairs and the Minister of Broadcasting, Communications and Digital Media, the Commission is run independently from the government, and is intended to be an impartial promotor and enforcer of the law. The Commission undertakes investigations into potential breaches of the Commerce Act 1986 and where appropriate, takes court action. It considers applications for authorisations and clearances in relation to anti-competitive behaviour and mergers, in circumstances where the public benefit out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transformer
In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple Electrical network, circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force, electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change Alternating current, AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Substation
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and the consumer, electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. They are a common component of the infrastructure. There are 55,000 substations in the United States. Substations are also occasionally known in some countries as switchyards. Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control. The word ''substation'' comes from the days before the distri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-voltage Direct Current
A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. Most HVDC links use voltages between 100 kV and 800 kV. HVDC lines are commonly used for long-distance power transmission, since they require fewer conductors and incur less power loss than equivalent AC lines. HVDC also allows power transmission between AC transmission systems that are not synchronized. Since the power flow through an HVDC link can be controlled independently of the phase angle between source and load, it can stabilize a network against disturbances due to rapid changes in power. HVDC also allows the transfer of power between grid systems running at different frequencies, such as 50 and 60 Hz. This improves the stability and economy of each grid, by allowing the exchange of power between previously incompatible networks. The modern form o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HVDC Inter-Island
The HVDC Inter-Island link is a long, 1200 MW high-voltage direct current (HVDC) transmission system connecting the electricity networks of the North Island and South Island of New Zealand together. It is commonly referred to as the Cook Strait cable in the media and in press releases, although the link is much longer than its Cook Strait section. The link is owned and operated by state-owned transmission company Transpower New Zealand. The HVDC link starts in the South Island at the Benmore Hydroelectric Power Station, on the Waitaki River in Canterbury and then it travels on an overhead transmission line through inland Canterbury and Marlborough to Fighting Bay in the Marlborough Sounds. From Fighting Bay, the link travels 40 km via submarine power cables underneath Cook Strait to Cape Terawhiti, Oteranga Bay, near Wellington, before travelling the final 37 km on overhead lines to Haywards transmission substation in Lower Hutt. The HVDC link first became opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whakamaru To Brownhill Road Transmission Line
The Whakamaru to Brownhill Road transmission line is a double-circuit 400 kV-capable transmission line constructed by Transpower to increase the capacity of the National Grid between the southern Waikato and the city of Auckland. The line runs from the Whakamaru sub-station near the Whakamaru Power Station, over a distance of to the new Brownhill Road substation near Whitford in southeastern Auckland. The line will initially be operated at 220 kV. From Brownhill Road, 220 kV underground cables connect the line to the Pakuranga sub-station in eastern Auckland. The project was the subject of considerable controversy and protest during the planning and approval stages. Construction of the line started in February 2010, and the line was commissioned on 30 October 2012. The transmission line forms the major part of a wider North Island Grid Upgrade project with a forecast cost to completion of $894 million. Overview The line was a major enhancement to the Nati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orion New Zealand Limited
Orion New Zealand Limited (Orion) is an electricity distribution company, based in Christchurch, New Zealand. The company was formed under its current name in December 1998. Orion is owned by Christchurch City Council (89.3%) and Selwyn District Council (10.7%). In 2013, Orion posted a $49m profit, with $32m in dividends going to the shareholding councils. Its last CEO was Roger Sutton, who resigned to become CEO of the Canterbury Earthquake Recovery Authority on 13 June 2011. Orion is responsible for electricity distribution in Christchurch and the Selwyn District, bounded to the north and south by the Waimakariri and Rakaia Rivers and to the east and west by the Southern Alps and the Pacific Ocean respectively. Within this region, it delivers 3,165 gigawatt-hours of electricity per year to 190,000 customers. History Prior to 1989, electricity distribution and retailing in Christchurch and Selwyn was the responsibility of four entities: the Christchurch City Council M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
