Before any measures and targets can be set, agencies need to have a clear understanding of the current state of their energy use at an individual building/premises/tenancy level. This understanding can be gained in a number of ways as follows:
- Establish energy use in both consumption and dollar terms for the past 12 months.
- Undertake site audits to identify and document the services/activities/ equipment that contribute to energy consumption where it would be cost effective to do so (eg it is more cost effective to undertake such audits on larger sites).
- The National Australian Built Environment Rating System as adapted for New Zealand (NABERSNZ) can be used for carrying out an energy audit. These ratings could be undertaken as a self-assessment, or undertaken by a NABERSNZ Accredited Assessor.
- Prepare an action plan that will lead to reduced consumption and cost, and assign the responsibility for the plan and reporting to an appropriate member of staff. If multiple sites are involved, energy usage accountability should be managed centrally.
- Undertake invoice audits to confirm that tariffs, charges, etc are correct (service providers under the All-of-Government contracts are available).
- Metering of sites should reflect the size and expected tenancy of a site, with the flexibility for separate future floor by floor tenancies. Eg for a standalone tenancy the electricity should be all powered through a single meter. The one meter should be a time-of-use meter, so that half hourly power can be analysed; downstream. Check meters should also be installed for central power (HVAC, lifts, exterior lighting) and floor by floor check meters. For multi-tenanted buildings there should be one time-of-use meter ‘at the gate’ that all tenants can access data from; one downstream time-of-use meter for central power; and a downstream check meter for each floor (either a time-of-use meter or a non-time-of-use meter).
- Identify and put in place strategies that support sustainable energy use practices.
- Seek senior management support and approval of these strategies.
- Provide an annual report back to senior managers updating them on progress across the portfolio. This report back should highlight individual performance across all sites.
- Communicate the situation to all staff, outline the agreed strategies and how staff will need to use the space, expected outcomes and how their efforts will contribute to these outcomes.
Facilities staff should understand the energy supply contracts in place across their various sites and where possible, transition to the relevant All-of-Government contracts.
All-of-Government Electricity contract
All-of-Government Reticulated Gas contract