Tekapo Hydro Power PlantMore than a flow meter - optimize the operation of the plant! Scope of service • RISONIC modular • Flow Measurement - Overvelocity protection - Sediment monitoring - Efficiency monitoring • Installation • Commissioning Customer Commissioning Genesis Energy Ltd October 2020 - January 2021 Hydro Plants Generation Company Hamilton, New Zealand Technical data • 2 Power stations Tekapo A (TKA) and Tekapo B (TKB) • TKA 1x turbine (Kaplan) and generating capacity of 31.5 MW • TKB 2x turbines / generating capacity of 80 MW each Plant description The Tekapo Power Scheme is located at the head of the Waitaki Valley in the Mackenzie District, New Zealand and uses water from the glacial-fed Lake Tekapo to generate electricity through two power stations (Tekapo A and Tekapo B). Both power stations are owned and operated by Genesis Energy. Tekapo A Power Station generates electricity from water diverted from Lake Tekapo via a 1.4km tunnel with surge chamber. The water outflow from Tekapo A then passes down a 25.5km canal and generates electricity through Tekapo B Power Station, located on the shores of Lake Pukaki.

PROJECT SCOPE The project scope included the following flow meter components and services by Rittmeyer in cooperation with the local Rittmeyer distributor Hydro and General Engineering Ltd (HAGEL), Genesis Energy Ltd and various subcontractors. • Tekapo A intake flow meter (2-path system) • Tekapo A downstream flow meter (8-path system according to IEC60041) • Tekapo B downstream flow meter (8-path system according to IEC60041) • Supervision of the IEC60041 laser based sensor positioning • Transducer installation • Commissioning of the flow meter • Programming of efficiency measurement and sediment...