place

Horotiu

Populated places in WaikatoPopulated places on the Waikato RiverUse New Zealand English from September 2022Waikato District

Horotiu is a small township on the west bank of the Waikato River in the Waikato District of New Zealand. It is on the Waikato Plains 13 km (8.1 mi) north of Hamilton and 5 km (3.1 mi) south of Ngāruawāhia. From early in the 20th century it developed around a freezing works and other industries. The North Island Main Trunk railway runs through the town, as did State Highway 1 until opening of part of the Waikato Expressway in 2013. An hourly bus runs between Huntly and Hamilton.

Excerpt from the Wikipedia article Horotiu (License: CC BY-SA 3.0, Authors).

Geographical coordinates (GPS)

Latitude Longitude
N -37.698611111111 ° E 175.19555555556 °
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Address

Horotiu Road

Horotiu Road
3288
Waikato, New Zealand
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Te Rapa cogeneration

The Te Rapa cogeneration plant is a 44 MW cogeneration plant owned and operated by Contact Energy. It is located at the Fonterra dairy factory, at Te Rapa near Hamilton in New Zealand, and was commissioned in 1999.The construction of the plant came as part of a wider upgrade to the dairy factory proposed in 1997. The original capacity applied for under the Resource Management Act was 150 MW, but there was opposition from Greenpeace about the carbon dioxide emissions and Tainui about pollution of the Waikato River; Subsequently the planned capacity was reduced to 45 MW and the change was announced at an Environment Court prehearing. The Waikato Times reported that “Greenpeace was pleased [with the change] but said even the smaller plant would pump out 100,000 tonnes of carbon dioxide”.The plant is based on a gas turbine (a GE frame 6B) that can produce up to 44 MW of electricity. Hot exhaust gases from the turbine are ducted to a heat recovery steam generator (HRSG) to raise steam. The HRSG has duct burners to increase steam output, which can be up to 180 tons of steam per hour.The cogeneration plant is designed for flexible operation, and can provide electricity to the dairy factory, export electricity to the local network or import electricity for use in the dairy factory. A common operating mode is 30 MW of electricity exported and 15 MW plus 120 tons per hour of steam provided to the dairy factory.A 127 MW gas/diesel fired auxiliary boiler is used when the cogeneration plant is not in operation.Fonterra has been authorised by the Waikato Regional Council to install and commission an alternative combustion plant if the co-generation plant ceases to be available.