Geothermal & Energy

Cheal provides expertise across the disciplines of Engineering, Surveying, Health and Safety and Environmental Management for the Geothermal and Energy Sector. Located in central North Island, the heart of New Zealand’s geothermal zone and the hub of hydroelectric development, we have extensive experience and refined processes covering many aspects of the energy industry.

Key projects that Cheal has been involved in include;

  • Mighty River Power Geothermal drill prospecting in Rotokawa, Mokai, Kawerau, Mangakino and Atiamuri
  • Mighty River Power/Tauhara North No.2 Trust : Nga Awa Purua Geothermal Power Station
  • Mighty River Power/Tauhara North No.2 Trust : Rotokawa 1 Geothermal Power Station
  • Mighty River Power/Tuaropaki Trust : Mokai Geothermal Power Station
  • Mighty River Power : Kawerau Geothermal Power Station
  • Geothermal Developments Ltd : Drill Prospecting in Kawerau
  • Contact Energy : Poihipi Road Geothermal Power Station
  • Genesis Energy : Tongariro Power Scheme
  • Mighty River Power : Waikato River hydroelectric scheme
  • King Country Energy : Kuratau hydroelectric scheme

Services 

Civil Engineering 

Provision of energy specific civil and geotechnical engineering services including asset erosion control, reservoir and de-watering pond design, flood modelling, project management, canal maintenance, dredging management, sediment budgets and roading and infrastructure.

Geothermal Drilling Consultancy Services

Cheal has led the design and construction management of an extensive drilling program across New Zealand’s Taupo and Eastern Bay of Plenty volcanic zone for many years. Services include; civil feasibility studies, geotechnical assessments, well siting, pad design and preparation, tender documents and procurement, project management, construction supervision, water management, access design, hydraulic assessment and modelling, and hydrological catchment assessments. 

Geothermal Environmental Management

In an ever changing regulatory environment, Cheal provides a conduit between the client and regulatory authority representatives across a range of civil works and environmental monitoring within the energy sector. Services include; pre design environmental assessment of proposed development locations, design and implementation of sediment and erosion control plans, environmental assessment and reporting of contaminated locations, sampling of drill cuttings from abandoned well pads and design and supervision of remediation projects.

Geothermal Site Health and Safety

Cheal is committed to the enhancement of Health and Safety (HSE) performance for its clients. Understanding the changing culture of health and safety in the work place, Cheal works closely with all levels of our clients’ organisations to provide leadership and develop effective relationships in HSE. Our commitment is to achieving a safe working environment through the implementation of efficient and practical processes. Services include; complete geothermal energy project HSE establishment and management, site specific safety management plans, hazard and risk assessment management, contractor HSE management, site and project inspections and audit, process improvement advice, site specific inductions, accident and incident reporting and setting and tracking key performance indicators.

Laser Scanning

Cheal provides fast efficient data capture for design and modelling in 3D. This leading edge technology collects massive amounts of data over complex structures or surfaces in very short time frames. The technology is used for dam face and crest surveys, draft tube as-builts, steam pipe as-builts, deformation modelling, tunnelling, mining surveys, airport runways and buildings, as-built refits for ships as well as existing buildings and high rise commercial blocks, as-built data for archival record and set out of complex structures.

Steamfield Engineering

Civil and structural design of geothermal steamfield developments including grading design for the pipe corridor, stormwater design for the resulting corridor, culvert and bridge structures where conflicts occur, retaining or fill embankments as required, foundation design for steam pipes and the design of service roads and their stormwater controls.

Surveying

Specialist survey services including; laser scanning, engineering survey for power station and infrastructure setout, deformation monitoring, erosion monitoring and hydrographic survey.

Projects

Wairere Falls Power Station - King Country Energy

Wairere Falls Power Station - King Country Energy

King Country Energy engaged Cheal to provide a 3D CAD model of the existing turbine installation, penstock component, and the draft tube including the confined cavities underneath the turbine building at the tailrace. Traditional survey methods to capture data in order to build a CAD model of this complexity is extremely time consuming and subject to human error. For this complex work Cheal Surveyors used our FARO Focus3D Laser scanner to collect the data.... more

Sediment Disposal Area - Genesis Energy Ltd

Sediment Disposal Area - Genesis Energy Ltd

Dredging of the Rotoaira Canal and deposition of the resulting silt is an on-going issue for Genesis Energy’s Tongariro Power Scheme. Cheal has assisted Genesis Energy in this area for over 15 years through survey monitoring of sediment levels in the canal as well as engineering services.... more

Wairakei Steamfield Laser Scanning - MB Century

Wairakei Steamfield Laser Scanning - MB Century

The Cheal Survey Team was engaged by MB Century (New Zealand) to provide a ground model and pipe model of a geothermal flash plant located at the Wairakei Geothermal steam field in Taupo. This data is to be used for the design of a new pipeline to run adjacent to the existing plant. ... more

Erosion Control - Genesis Energy

Erosion Control - Genesis Energy

In early 2008, Genesis Energy Limited approached Cheal Engineers to investigate options to alleviate major erosion in a critical area on one of their primary water reservoirs. Lake Moawhango sits in the semi alpine environment north of Waiouru. The artificial lake results in a seasonal variation in the order of 20 vertical metres. Previous efforts at armouring the highly erodible shoulders of the dam have been undertaken at great cost. Cheal Engineers brief was to design a cost effective solution which tied in ... more

Nga Awa Purua Power Project - Mighty River Power

Nga Awa Purua Power Project - Mighty River Power

The Nga Awa Purua power project located in Taupo, New Zealand was a joint venture between Mighty River Power and Tauhara North No.2 Trust. The Project entailed the construction of a single turbine 140MW power station on Trust land. An initial geotechnical investigation to 30 meters deep as well as feasibility studies to determine the most appropriate parcel of land were undertaken. The client used this information to inform ... more

Ngatamariki Power Project - Mighty River Power

Ngatamariki Power Project - Mighty River Power

Cheal was engaged by Mighty River Power at the inception stage of the Ngatamariki Power project in 2004. The steamfield sits midway between Taupo and Rotorua, New Zealand. Presently the field is envisaged to supply steam for a 110mw power station. Initial civil scoping and well pad feasibility studies were commenced in 2005. Over multiple phases, Cheal designed and... more

Mokai Power Project

Mokai Power Project

The Mokai power station, located northwest of Taupo, New Zealand was commissioned in February 2000, and is owned by the Tuaropaki Power Company, of which Mighty River Power has a 25% shareholding. Mighty River Power is contracted to operate and maintain the station. As partners, Mighty River Power and the Tuaropaki Power Company have a common interest in ensuring the long-term sustainability of the resource.... more