Hydropower Engineering

We have over 40 years’ experience in hydroelectric engineering and are leaders in applying innovative thinking to projects.

Our experience, both in New Zealand and internationally, covers the full range of hydropower schemes (mini up to large) including greenfield development and upgrading of existing schemes. 


Conceptual and feasibility studies:

  • Project definition and value engineering
  • Geotechnical investigations and assessment
  • Hydrology and hydroenergy
  • Hydraulic and civil engineering design
  • Environmental assessment.

Consents and detailed design and documentation:

  • Geotechnical investigations and assessment
  • Hydrology and hydroenergy
  • Hydraulic and civil engineering design
  • Preparation of tender documentation and specifications
  • Designer advice during construction

Construction management including commissioning

Safety management including operation, maintenance and surveillance manuals and emergency action planning

Rehabilitation and upgrading

Peer review and expert witness.


We have worked on a large number of projects including:

  • Lake Mainit, Catuiran and Cantakoy (25 MW and two x 8 MW respectively) EPC projects, Philippines
  • Arnold greenfield (40 MW) and mini on existing dam (4 MW) hydropower projects, feasibility design, South Island, New Zealand
  • Sibulan two station cascade hydroelectric scheme (42 MW) design and construction supervision in Mindanao, Philippines
  • Detailed design for the 13 MW two station Tudaya 1 and 2 project, Philippines
  • Project Aqua (540 MW, six station cascade with 60km canal) pre-feasibility and feasibility studies, New Zealand
  • The 7.5 MW toe of dam power station as part of the 50m high Opuha Dam project, South Canterbury, New Zealand
  • Review consultant through feasibility and into procurement for the Tina River hydropower project, Solomon Islands with a 20 MW, 40m high concrete faced rockfill dam
  • Dam safety panel for the design through construction of the 520 MW Huoi Quang project in Vietnam, involving a 104m high concrete gravity dam
  • Rehabilitation studies and design for Ambuklao and Binga hydropower schemes involving two embankment dams (129m and 107m high respectively) in the Philippines
  • The feasibility study of retrofitting hydro at 42 existing irrigation water supply dams or weirs in Queensland, Australia

 Any questions you can email us here: dams@tonkintaylor.co.nz