FMANZ SUMMIT 2017 20-30% OF YOUR CURRENT ENERGY USE IS PROBABLY WASTE JEREMY ALLEN, FOUNDER, ENERGY SOLUTION PROVIDERS

Who Energy Solution Providers (ESP) Specialising in the installation of high accuracy, automated remote metering systems Across commercial, public, Industrial, retail and educational facilities New Zealand wide Energy Solution Providers… Specialise in the supply and installation of highly accurate, automated, remote, metering systems This enables us to help businesses reduce energy usage and costs, and get NABERSNZ and other building ratings has saved NZ businesses ~$22 million or 122 million kWh is working with 50+ clients, across 500+ sites with nearly 6000 meters nationwide up to 40% EECA funding for every monitoring project that we do won the 2016 EECA award for Business Service Excellence

CASE STUDY SUMMARY BUILDING 1 BUILDING 2 YEAR BUILT - 2006 LOCATION - AUCKLAND LOCATION – AUCKLAND NLA – 15,100 m2 NLA – 16,030 m2 HVAC SYSTEMS DESCRIPTION: AHU SUPPLYING VAV’s FOR AIR AHU COOLING ONLY VAV ELECTRIC RE-HEAT CHILLED WATER COOLING 4 CHILLERS FRESH AIR AHU DISTRIBUTED TO PERIMETER VAV’s LOCAL TEMPERATURE CONTROL VIA FCU’s HEATING FROM ELECTRIC RE-HEAT 3 CHILLERS: CONTROLLED STAGING IN RESPONSE TO DEMAND BUILDING CONTROLS SYSTEMS - DELTA BUILDING CONTROL SYSTEMS: TRIDIUM NIAGRA BASELINE ENERGY USAGE: 3,754,420 kWh CALCULATED BASELINE ENERGY USAGE: 3,104,672 kWh BASELINE EUI: 248 kWh/m2 BASELINE EUI: 193 kWh/m2

BUILDING 1 – Issue 1 No Data After installing 33 ESP Meters

ENERGY AUDITS/FD REVIEW BUILDING OPTIMISATION/ CCX BASELINE YEAR 33 ESP METERS INSTALLED ENERGY AUDITS/FD REVIEW BUILDING OPTIMISATION/ CCX

KEY ISSUES – HEATING COOLING FIGHTING Heating load operates throughout summer Such issues are typical of a AHU-VAV reheat HVAC system. Cooling is prioritise at the AHU because VAV’s can reheat locally. Bad set points and bad zoning exaggerates this problem Identified the problem via metering, resolution via checking BMS operation and set points. Try to make zoned and grouped units with consistent set points to eliminate fighting and unnecessary reheating

Building 1 – Results to date (5 years) 18% $569,000 3,794,379 kWh

Building 2 – Summary BUILDING 2 YEAR BUILT - 2016 LOCATION – AUCKLAND NLA – 16,030 m2 HVAC SYSTEMS DESCRIPTION: FRESH AIR AHU DISTRIBUTED TO PERIMETER VAV’s LOCAL TEMPERATURE CONTROL VIA FCU’s HEATING FROM ELECTRIC RE-HEAT CHILLED WATER COOLING 3 CHILLERS: CONTROLLED STAGING IN RESPONSE TO DEMAND BUILDING CONTROL SYSTEMS: TRIDIUM NIAGRA CALCULATED BASELINE ENERGY USAGE: 3,104,672 kWh BASELINE EUI: 193 kWh/m2

BUILDING 2 - Project Overview PREDICTED ENERGY CONSUMPTION 90 ESP METERS INSTALLED ENERGY AUDITS/FD REVIEW BUILDING OPTIMISATION/ CCX

BUILDING 2 – 90 meters NABERSNZ base build compliant

Immediate Findings 51% of the energy is used 7am-6pm M-F 49% consumed out of hours of which 19% from unoccupied weekends and 30% from unoccupied weekdays Tenant Lighting 21% unoccupied consumption, 10% of total consumption and estimated annual cost $42k Central Mechanical plant 19% unoccupied consumption, 19% of total consumption and estimated annual cost $38k Tenant General Power 18% unoccupied consumption, 9% of total consumption and estimated annual cost $36k Comms (UPS) 13% unoccupied consumption, 9% of total consumption and estimated annual cost $27k Tenant Mech Power 11% unoccupied consumption, 5% of total consumption and estimated annual cost $22k Chillers (Chiller1) 8% unoccupied consumption, 4% of total consumption and estimated annual cost $16k

KEY ISSUES – HOLIDAY SCHEDULES Easter Weekend Through the metering we can see a load reduction at the main incomer Load profile on Lighting loads was only slightly lower than a normal day Load profile on Mechanical hardly changed at all compared to a normal day Load profile on General Power was similar to a weekend – this is a key indicator that the building was in fact mostly unoccupied. Through this we determined that the holiday shutdown was not properly implemented at the building controls interface Contractor was notified and the issue fixed ANZAC Day Main Incomer now looking like an unoccupied day/weekend Lighting still has a high load on this day more investigation required Mechanical load is similar to a weekend profile Power load profile shows that the building was unoccupied

Building 1 – Results to date (12 months) 26% $129,469 863,130 kWh

SUMMARY OF COMMON ISSUES Problems from Day1 Pressures from the construction project Specification and selection of plant equipment is often problematic from tender stage Short Term Operation Reactive maintenance Changing tenants or space usage is fairly common Often things that aren’t working are just switched to manual control just to get it working Long Term Operation/degradation As equipment age they lose efficiency BMS equipment becomes obsolete (10-15 years) Problems from Day1 Pressures from construction project such as time, cost, labour availability often means that there is not enough resources allocated to commissioning mechanical services and as such plant items are not optimally setup Specification and selection of plant equipment is often problematic from tender stage. Tenders are either too specific and that drives up project cost, or too loose and enables low cost tenders to sneak in since they appear very attractive but may not be the most efficient Short Term Operation Reactive Maintenance – maintenance that react to complaints are often rectified without regard to energy management or optimal operation. Most often set points are adjusted in accordance to complaints and ends up being inconsistent across zones and units end up fighting/excessive reheating and re-cooling. Changing tenants or space usage is fairly common. HVAC equipment might be replaced but if so they are rarely recommissioned as part of the entire building, or if not replaced then the equipment might not be suitable if the space usage is different from before. Often things that aren’t working are just switched to manual control just to get it working. Equipment isolated from controls are rarely working efficiently as they can’t react to conditions. Long Term Operation/degradation As equipment age they are to lose efficiency. Most often valves start to leak and this imparts even more wasted energy into the system BMS equipment becomes obsolete and can no longer replace faulty equipment or complete upgrades. This leads to a situation where there may be many different types of equipment in a building that cannot fully communicate, leading to limits in programming and affecting efficiency.

Energy Use Index kWh/m2*pa EUI BENCHMARK   OPPORTUNITIES FOR IMPROVEMENT SHOULD BE INVESTIGATED GREEN 50 100 150 200 250 Energy Use Index kWh/m2*pa

-Accenture (What’s Wrong with Traditional Energy Management) “50 percent of initial energy savings disappear within the first six to 12 months due to a lack of continuous monitoring, analysis and corrective action.” -Accenture (What’s Wrong with Traditional Energy Management) https://www.accenture.com/id-en/~/media/Accenture/Conversion-Assets/DotCom/Documents/Global/PDF/Operations_1/Accenture-Traditional-%20Energy-Management.pdf