Pumping Systems


Pumping systems account for 20 – 30% of industrial electricity demand, which equates to approximately 5% of New Zealand’s total electricity use.  It is estimated that 75% of pumping systems contain inefficiencies where energy savings of 10 – 50% can be found with relatively low implementation costs. This equates to 670 GWh p.a. of economic electricity savings from industrial pumping systems, accounting for 60% of all potential economic electricity savings within industry.

Ever wondered how much energy your site’s pumping systems use, or just where all that water goes? Energy NZ’s pumping system auditing service, which first begins with a base-level opportunity study, can quickly answer these questions as well as identify key areas where energy saving potential lies.

For large or complex pumping systems, Energy NZ can undertake an investment-level opportunity study where the total system input power and individual flow and pressure readings are recorded and analysed.

Unlike traditional energy efficiency studies, Energy NZ can then assist with the project management, implementation and temporary or permanent post monitoring of any pumping system efficiency project that has been identified as part of the initial stage.

As Energy NZ is a recognised EECA programme partner, we can also assist with all Government programme funding options, including funding for base-level and investment-level opportunity studies, and assistance with implementation including funding for capital costs, project management and post-implementation monitoring and reporting. The base-level opportunity study is 100% funded in most situations, giving you a zero-risk overview of potential opportunities within your pumping system.

Auditing Levels

Energy NZ’s pumping system auditing services are divided into three parts, with each part being carried out in accordance with the New Zealand Pumping System Audit Standard.

1. Base-Level Pumping System Audits

  • Walk-through assessment, data collection and system check as per the base-level requirements of the audit standard
  • Short report produced, including identification of system efficiency improvements and where investment-level auditing work is required

2. Investment-Level Pumping System Audits

  • Typically for sites which have already undergone a base-level system audit
  • In-depth data collection, ultrasonic flow loggings, electrical power quality loggings, pressure loggings and detailed calculations as per the investment-level requirements of the audit standard
  • Comprehensive report produced, including quotes from product suppliers designed to be very accurate and easy to implement

3. Pumping System Implementation Projects

  • For opportunities identified through either an Investment-Level audit or feasibility study, Energy NZ can assist with potential Government funding and provide project management and post-implementation reporting and monitoring services.

For further information on Government funding options towards pumping system audits and capital grants please contact us.