NABERSNZ™ - One year on?

Vanessa McGrath – NZGBC

Lance Jimmieson - Jackson Engineering Advisers

1

Agenda

• Where did NABERSNZ come from?

• The benefit of hindsight

• The introduction and growth of NABERSNZ

• Understanding NABERSNZ

• How NABERSNZ relates to Facility Managers

• How to maximise your building

• Next steps

2

National Australian Built Environment Rating System (NABERS)

3

Australian History & Results

Aussie Rules

Nov 2001: Mandated in Australia2,000 m2 + buildings must disclose a current Building Energy Efficiency Certificate (BEEC). 

4

Property Council Australia - Quality Grading

5

NABERS in Australia

6

The impact on the Property Market

7

NABERSNZ - Introduction

• Existing building performance rating system

• Energy performance benchmarking

• Compare energy efficiency of commercial office buildings

Range: 0 to 6 Stars

• Three types of ratings

8

NABERSNZ - Philosophy:

To compare apples with apples

Make allowances for:

• Climate

• Hours of operation

• Core service delivery functions

Standardised methodology

9

NABERSNZ - Progress to date

• Pilot training & assessments February 2013

• Official Launch June 2013

• 12 Certified Ratings (Published)

• 352 Self Assessments

• 175,579m² of commercial office space has undergone a Certified Rating thus far

10

NABERSNZ - Results(m2 Rated)

11

NABERSNZ Rules

Energy Loads

12

What does NABERSNZ rate?

Rating type Covers Applicable to:

Tenancy Lighting and plug loads used within the tenancy space

Tenants

Base Building Common-area lighting and power, lifts, HVAC to the whole building

Building owner or property manager

Whole Building A combination of the above

Building owner or property manager

13

Tenant loadsPower and Lighting to Tenancy rentable area Power and

Lighting to Tenancy service areas assigned to a single tenant

Tenant-controlled supplementary air conditioning to meet a special tenant requirement

Generator fuel for a tenant

Tenant-installed signage within or on the building

14

Base building loadsCentral plant i.e. chillers, boilers, AHUs

Centralised supplementary services provided for tenantsLifts &

escalators

Toilet exhaust fan

Exterior lighting

Lighting and power in common areas

Exterior signage

Generator fuel where it serves central services

Car park ventilation and lighting for tenant use

HVAC to meet normal office needs

HVAC to meet normal office requirements

Automatic blinds to control internal temperature

15

Data Required

• Survey plans measured to PCNZ standard

• Leases, BMS records, after hour records, occupancy surveys

• Computer count

• Utility bills, check meter readings, diesel delivery bills

16

First time is always the hardest

Major challenges:

• Lack of adequate metering

• NLA surveys

• Lack of up to date single line diagrams

• Need for retro-commissioning

17

Facilities Managers Influence

Measure NABERS impact

Partially in-sourced building management

1.3 Stars

Where building, asset and portfolio manager all feel able to affect efficiency

0.9 Stars

Efficiency penalties/incentives to maintenance Contractors

0.4 Stars

18

Facilities Managers Skills

Measure NABERS impact

Efficiency training program in place

0.5 Stars

Where facilities manager reports a higher level of energy efficiency knowledge perform better

1.3 Stars

19

Energy Efficiency Consideration

• Part Load (pumps, fans, chillers, boilers, etc.)

• After-hours strategy (base building system)

• Economy cycle

• Re-heat and humidity control

• Allowing for a single-tenant or a multiple tenants

20

Next steps

• Is your building NABERSNZ ready? Find out

• Enabling works?

• First certified rating- can remain private

• Focus on the journey

• Energy efficiency improvement plan

• Engagement from tenants, property owners etc.

21

Education options

NABERSNZ Practitioner course• A basic knowledge of the Rules, the data

required, metering requirements, common problems in existing buildings. Access to the reverse calculator

NABERSNZ Assessor course• Carry out NABERSNZ Certified Ratings• Access to the rating tool

22

Questions?

• You can contact the NABERSNZ Team at the New Zealand Green Building Council:Email: nabersnz@nzgbc.org.nzWeb: www.nzgbc.org.nz

• For further information on NABERSNZ visit:www.nabersnz.govt.nz

• For more information on how your organisation can improve your energy efficiency visit:www.eecabusiness.govt.nz

23