An overview of the Engineer David Tokelove

Profile David Tokelove

Co Founder at Servogen Limited

Bay of Plenty, New Zealand
Renewables & Environment

  1. Servogen Limited,
  2. Heavy Engineering Research Association
  1. PFS Engineering Ltd.,
  2. South Pacific Syngas Limited,
  3. Fletcher Construction Company
  1. Company Website


Dave is a talented Innovator/ Entrepreneur. He has a rich experience of 14 years encompassing various sectors and projects.

He is currently establishing new businesses in the Renewable Energy market focusing on next generation of Renewable Energy Technologies, market education of renewable applications and development of equipment interconnectivity. These elements are vital to move renewables from enthusiast to mainstream application.

Dave is also a technical representative on the board of the AGGAT programme being Developed by HERA (Heavy Engineering Research Association).

He is known for his clear vision, problem solving and mentoring skills across the Industry. His objective is to create innovative products and businesses on a global scale in the field of Renewable/ Clean energy.


  • Co Founder

    Servogen Limited
    – Present (9 months)

    Servogen is a forward thinking Renewable Energy company working on new technologies in the renewable energy and micro-grid technology sectors

  • Board Member – Technical Committee

    Heavy Engineering Research Association
    – Present (3 years 8 months)

    • Negotiated participation and equity stake holding on behalf of PFS Engineering for the AGGAT program being developed by HERA.
    • Negotiated and secured a seat on the AGGAT board for one of the Directors of PFS Engineering

  • Energy/ Engineering Manager

    PFS Engineering Ltd.
    (3 years 5 months)

    PFS Engineering is an engineering firm based in Hamilton. It provides specialist expertise in design, manufacture, installation and maintenance of Mechanical/Civil projects.

    Dave’s role has been to commercialize the Green Technology developed by him and his team and create a platform to facilitate the conversion of PFS Engineering from a tender based Mechanical Contractor to a product oriented manufacturer along with having an overview of day to day business at PFS.

    • Tested and made recommendations on existing Waste to Energy technologies
    • Development of BOO project plans to gain market entry for existing PFS Technology.
    • Negotiated the closing of the existing waste to energy technology development and the focus on modern gasification technology.
    • Negotiated and won contracts with the New Zealand Defense force for feasibility studies into renewable energy use at Burnham Military Camp, in Christchurch
    • F700 business recognition, initially for PFS Engineering and subsequently achieving novation of this status for PFS Energy on separation of the division from the parent company. (F700 is a New Zealand Trade and Enterprise ranking recognizing the fastest growing 700 companies in New Zealand)
    • Secured recognition of the Research and Development importance, from key government agencies, and successfully secured 40% project co-funding from Callaghan Innovation (Ministry for business and innovation) totaling in excess of $500,000. This project has also been the only gasification project backed by NZ government based funding sources.
    • Successfully secured the first domestic project for PFS Energy in NZ
    • Negotiated and secured an initial Project in the Malaysian Market.
    • Successfully developed low cost CHP prototypes to allow modular placement of ORC units within the geothermal market. Including low cost in house turbine technology.
    • Negotiated and secured sites for commercial field trials with one of NZ’s largest geothermal generation companies.

  • Director -Projects

    South Pacific Syngas Limited
    (2 years 3 months)

    • Negotiated lease on Manufacturing Premises.
    • Established a manufacturing facility South of Auckland
    • Successfully negotiated and secured contract labour force, to allow flexibility within project operations
    • Successfully negotiated and secured US$2.56 million of Project works within 4 months of establishing manufacturing facilities.
    • Completed and tested proof of concept R&D prototypes of Syngas equipment.
    • Employed key Engineers within the business
    • Oversaw the development of mechanical and automation systems for production of Syngas plants up to 2MW.
    • General manufacturing, and facilities management duties
    • Worked with General Electric (Texas) to have SPS syngas plant designs verified as suitable for pairing with Jenbacher Type 6 generation equipment

  • Senior Mechanical Engineer

    Fletcher Construction Company
    (4 years 9 months)

    • Senior Mechanical Engineer on various sewage pumping systems with capacities from 2 to 6 Cumecs. Typical mechanical budgets $3 to $10 million
    • Fletcher Construction does not undertake mechanical or Electrical works, and therefore although my title was as a Mechanical Engineer my predominant function was to manage subcontractors and budgets to deliver works on behalf of the company.
    • Led investigations into machine failure, both of plant purchased by the company but also of equipment purchased from 3rd party suppliers.

    The objective in all cases was to identify causal failure mechanisms, where possible identify and supervise repair requirements. In all cases the objective was to gather sufficient evidence to provide the legal team with means to seek damages from suppliers. We had a 100% success rate in Causal analysis, and typically an 80% success rate in cost recovery. I completed this nature of work for the following cases:

    • FCC Vs Tyco NZ (Valve Failure)
    • FCC vs Service Engineers Limited (Vertical Heat Exchanger Failure)
    • FCC vs Belcher Engineering (Complete Failure of TBM Jacking Rams 2 weeks after delivery)
    • Water Care Services Vs Humes (Valve Failure)

  • Contracting Project Manager- Whitford Landfill Extension

    Hays Construction and Mining
    (6 months)

    • Successfully delivered 80% of the project prior to close of earthworks for winter within the remaining 20% budget.
    • Optimized machinery movement and use.
    • Altered clay liner extraction to minimize shear vane failures.
    • Reduced post compaction testing failures of clay liner to under 5%
    • Reduced cross contamination of trucked loads
    • Monitored and reduced site diesel usage
    • Utilized contract labour to allow an as needed cost basis for construction.
    • Mentored and developed project management skills of the project manager concerned.
    • Assisted in removing key agitators from the construction crew and consolidated a united work ethic within the construction staff.

  • Project Manager

    Service Engineers
    (2 years 9 months)

    • ARTNL Western Line Station upgrade $5.0 Million all Station Infrastructure (Head Contractor)
    • Fiji Electricity Authority 25MW Diesel to Heavy Fuel oil conversion and HFO tank farm US$5.0 million (Head Contractor)
    • Apia Police Station Samoa $750,000
    • Various Churches Samoa $100,000 to $300,000
    • SU004 above platform infrastructure Southern, Central and Western Rail Corridors 5.0 Million
    • ARTA Birkenhead Ferry Terminal, $500,000
    • Various Warehouses $200 to $1.5 million
    • Maraetai Beach Wastewater Treatment Plant Mechanical works $750,000