Totara Valley distributed generation project Micro Hydro scheme July 2006

Totara Valley 20mins drive northeast of Woodville 20mins drive northeast of Woodville Site of several Massey renewable energy projects Site of several Massey renewable energy projects –Solar photovoltaic and solar thermal –Wind Turbine + Electrolyser + Fuel cell –Bio-diesel generator Very supportive landowners Very supportive landowners Proximity to Massey University Proximity to Massey University

Totara valley

Features of Hydro project 1400W peak output 1400W peak output 165 m static head 165 m static head 1300m “penstock” 1300m “penstock” Maximum flow rate 2Litres/sec Maximum flow rate 2Litres/sec Grid Interactive Grid Interactive

Site considerations High head site selected because… High head site selected because… Technical and academic challenges Technical and academic challenges Low environmental impact Low environmental impact Allows stress testing of components and further research Allows stress testing of components and further research

Intake site

Turbine Site

Equipment Selection Pelton wheel good choice for high head site Pelton wheel good choice for high head site EcoInnovations turbine selected EcoInnovations turbine selected –NZ manufacturer –Recycled materials –Innovative design –Availability of spares and support –Competitive pricing

Alternator detail

Energy Recyclers Grid Interactive Inverter

Working Pressure 1260 kPA

Project milestones 26 April 2005 initial survey 26 April 2005 initial survey Consent application completed 21 July 05 Consent application completed 21 July 05 Week of 16 Dec 05, Installation of intake, hut, turbine, intake pipe. Week of 16 Dec 05, Installation of intake, hut, turbine, intake pipe. 24 Mar 06 connection to grid completed operational on temporary basis 24 Mar 06 connection to grid completed operational on temporary basis Continuous operation 25 July 06. Continuous operation 25 July 06.

Construction – Turbine site

Pipe Installation

Resource Consent process Discretionary activity under the district plan Discretionary activity under the district plan Two consents required Two consents required –For diversion/abstraction of surface water –For discharge into a stream Would have also required consent for dam if required Would have also required consent for dam if required

Resource Consent process –cont’d Horizons regional Council agreed to issue 2 non notified consents providing we obtained written permission from Horizons regional Council agreed to issue 2 non notified consents providing we obtained written permission from –Landowners –Neighbors –DOC –Fish and Game

Intake site

RMA process Considerable volume of documentation required Considerable volume of documentation required Council approval approx 4 months Council approval approx 4 months Council charges $1,289 + deposit Council charges $1,289 + deposit Ongoing annual “monitoring” charge Ongoing annual “monitoring” charge Ongoing annual “administration” charge Ongoing annual “administration” charge Consent is for 20 years with 5 yearly reviews Consent is for 20 years with 5 yearly reviews All of the above are significant disincentives and are a barrier to development of small scale renewables. All of the above are significant disincentives and are a barrier to development of small scale renewables.

Hut Interior

Future Directions Monitoring the performance and reliability of present turbine Monitoring the performance and reliability of present turbine Trials with induction motors and other technologies. Trials with induction motors and other technologies. Addition of telemetry and remote monitoring equipment Addition of telemetry and remote monitoring equipment Possible development of a previously identified low head site Possible development of a previously identified low head site

Acknowledgements Jim Hargreaves – Massey University Jim Hargreaves – Massey University Ralph Simms – Massey University Ralph Simms – Massey University Michael Lawley, Riana – EcoInnovations Michael Lawley, Riana – EcoInnovations Todd, Poultan’s Australian shearer Todd, Poultan’s Australian shearer Bram & Peter – Visiting Post Grad Students Bram & Peter – Visiting Post Grad Students IRL – Ben, Alister IRL – Ben, Alister Mainpower – Andrew, Todd Mainpower – Andrew, Todd Mark Carter Mark Carter Apologies to those contributors I have overlooked Apologies to those contributors I have overlooked

THANK YOU !