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Windward Community College

Investment Grade Audit Report

Energy Savings Performance Contracting Services

Energy Conservation and Renewable Projects

University of Hawai’i Community Colleges - Oahu Campuses

Investment Grade Audit Report – Phase 2

University of Hawai’i Community Colleges – Oahu Campuses© 2017 Johnson Controls, Inc. Do not copy (physically, electronically or in any other media) without the express written permission of Johnson Controls, Inc.

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The Efficiency Numbers

$405K 29% $4M $12.8M

Guaranteedsavings

in first year

Additional reduction in annual HECO utility consumption from

efficiencymeasures

Dollar value of ECMs that also

address deferred

maintenance

Total Guaranteed Energy & Operational Savings over 20-year Performance Period

The Impact of Solar plus Energy Storage

4,906,200 kWh 3,489,301kWh 2,033,043 kWh 1,456,258 kWh

Existing Annual HECO Utility Consumption

HECO Consumption After Energy Efficiency Measures

New Solar PV Production NET

Baseline 29% efficiency 41% solar 70% total

0

500000

1000000

1500000

2000000

2500000

3000000

3500000

4000000

4500000

5000000

KW

H

Impact of Effiency Plus Renewables fiency Plus at WCC

Today's HECO

Baseline

Baseline After

Energy Efficiency

Solar PV

ProductionNET



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1. The solar production and resulting Net Energy use is dependent upon, among other things, HECO utility interconnection and resulting agreement not to curtail the solar PV system.

2. The Net Energy Use is an engineer’s calculation solely for the charts contained in this report, and does not represent a guaranteed outcome of the customer’s electric utility bills post-installation. The actual load profile of the building may change based on varying conditions such as weather, schedules, and building use. See the Performance Contract for more details on the measurement & verification process.

3. Any reference to “Net Zero Energy” is based on the definition of Net Zero being that the expected annual renewable electric generation potential is roughly equal to the annual electric energy consumption on a per campus basis.

Overview and Analysis of Existing Systems

Windward Community College consists of an 11-acre campus located in Kane’ohe on the island of Oahu. There are 17 buildings on this campus; all either single story or two stories in height.Some of these buildings are of newer construction, while others were built in the 1920s. Total building area is about 300,000 square feet. The usage of the buildings is primarily for classrooms, library, kitchen, theater and office areas. The hours of building occupancy and operation are from 8 a.m. to 5 p.m., Monday through Saturday, with many evening classes as well.



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Lighting

The existing interior lighting comprises of various light fixtures using second generation CFL compact fluorescent and T8 linear fluorescent technology powered by electronic ballast technology. In addition, some HID lamps and core-&-coil ballasts are still present.

The main fixture used throughout the campus office and classroom spaces are a 2x4 troffer fluorescent system. Another common fixture, a 2x2 troffer style fixture, was retrofitted 6 years ago from U-bend T8 lamp design to 2ft F17T8 lamps and an added reflector.

In a few rare cases, occupancy controls were implemented and currently exist, but do not appear to be performing as desired. Facility Managers have reported failing to “turn-on” or failing to “turn-off”. These systems have been identified as first generation, high-voltage relay switching controls.

Many building attached exterior fixtures were converted to LED technology as well as exterior pole fixtures. No sophisticated controls are currently implemented in these systems.

In existing utility, shop, maintenance or storage spaces, 4 ft. – 2 lamp T8 industrial fixtures are the typical design. These fixtures have been converted with simple lamp and ballast retrofits.

Across all campuses, the existing lighting is predominantly not controlled with a Johnson Controls Metasys system. Most exterior areas are using conventional time clocks which require maintenance/adjustments by security or maintenance staff.

The predominant technology is generationally estimated to be 9-years old. Also there have been approximately 3 major technology leaps in lighting since the last conversion.

Mechanical

There are two chilled water plants that were connected with chilled water piping during Phase I to create a central chilled water plant and loop. Both chiller plants are variable speed pumping and cooling tower fans with primary pumping configuration. The Akoakoa plant consists of two 96-ton Trane centrifugal chillers and one 200 ton cooling tower. These Trane chillers utilize desuperheaters to pre-heat the domestic hot water. The Palanakila plant has two 122-ton carrier scroll chillers and two 120 ton Marley cooling towers. The buildings served by the central chilled water plants include: Akoakoa, Na’auao, Manaleo, Palanakila, Hokulani, Imiloa, and Kako’o.

There are two air cooled chillers at Kunina, only one is required to run to cool the building and the other is for redundancy. The other buildings are cooled by DX AC units.

The buildings are connected to a Johnson Controls Metasys control system.

Maintenance of these systems is performed by Johnson Controls.



Page 62

Baseline Data

The following table presents a summary of the electric and gas data for the Phase 2 base year period.

The following Annual Electric Usage chart indicates the monthly consumption pattern of electricity at Windward Community College. The usage pattern is consistent with the site’s academic calendar and the cooling requirement produced by the climate.

Windward CC

Meter #End Billing

Period

# of Days

Billed

Measured

Demand

KW

Billed

Demand

KW

Demand

Charge

$

Energy

Usage

KWH

Net Bill

$Utility

Rate

Schedule

MPX000552008 1/13/2016 33 853.8 997.2 24,272$ 378,000 82,943$ HECO P

MPX000552008 2/11/2016 29 900.0 1,020.3 24,834$ 358,800 78,670$ HECO P

MPX000552008 3/11/2016 29 875.4 1,008.0 24,535$ 358,200 75,757$ HECO P

MPX000552008 4/12/2016 32 900.6 1,020.6 24,841$ 390,000 78,682$ HECO P

MPX000552008 5/11/2016 29 970.8 1,055.7 25,696$ 391,200 79,995$ HECO P

MPX000552008 6/13/2016 33 918.6 1,029.6 25,060$ 420,600 84,938$ HECO P

MPX000552008 7/13/2016 30 1,009.2 1,074.9 26,163$ 424,800 90,362$ HECO P

MPX000552008 8/11/2016 29 1,043.4 1,092.0 26,579$ 420,000 92,609$ HECO P

MPX000552008 9/13/2016 33 1,107.6 1,107.6 26,959$ 486,000 104,262$ HECO P

MPX000552008 10/13/2016 30 1,093.8 1,100.7 26,791$ 460,800 98,290$ HECO P

MPX000552008 11/14/2016 32 1,050.0 1,078.8 26,258$ 438,600 93,103$ HECO P

MPX000552008 12/13/2016 29 987.0 1,047.3 25,491$ 379,200 84,107$ HECO P

TOTAL 368 11,710.2 12,632.7 307,480$ 4,906,200 1,043,718$

0.0

200.0

400.0

600.0

800.0

1,000.0

1,200.0

0

100,000

200,000

300,000

400,000

500,000

600,000

De

ma

nd

(k

W)

En

erg

y C

on

sum

pti

on

(k

Wh

)


Energy Consumption Billing Demand Measured Demand



3

Based on the Rate schedule that Windward CC is (Schedule P) with HECO, the below table shows the applicable electric rate that will be used to quantify the energy savings.

This table takes into account all the current charges that the campus pays, including discounts for power factor higher than 0.85, which is determined using the annual average of the baseline year.

The Energy Cost Adjustment charge is heavily dependent on the price of oil and varies monthly. Johnson Controls approaches this monthly variability by using a longer term average (3 years) as an effort to normalize this to something that can be used in long term projections.

HECO (Rate Schedule P)

Charge $/kWh $/kW Notes / All-In Delivered kWh Rate

Customer Charge Effective Sep 1, 2012

Demand Charge 24.34 Effective Sep 1, 2012

Energy Charge 0.149013 Effective Sep 1, 2012

Power Factor (0.896) -0.00068 -0.11 Based on Avg PF of last 12 mo (0.896)

RBA Rate Adjustment 0.021098 Effective June 1, 2016

IRP Cost Recovery 0.000746 Effective May 1, 2016

PBF Surcharge 0.002405 Effective July 1, 2016

Energy Cost Adjustment -0.00143 Avg of 3 yrs (Jan '14-Dec '16)

Purchased Power Adj 0.023623 Effective Feb 1-28, 2017

2.1% Supply Voltage Delivery Discount -0.00313 -0.51 Effective Sep 1, 2012

Green Infrastructure Effective Jan 1, 2017 - Jun 30,2017

Total 0.1916 23.717 $0.2127 per kWh

All-In Delivered kWh Rate

The above table breaks down utility data to match the format that the utility company uses to create your electricity bill. There are two main components: Energy and Demand. It is necessary to view these components separately when calculating precise impacts of energy conservation measures, which is the approach Johnson Controls has taken for calculation of savings in this Phase of the Performance Contract.

However, there are often times when it is more appropriate to consider the All-In Delivered kWh Rate.This method of comparing electrical costs takes all of the bill components (energy plus demand) and divides it by the total kWh usage. The All-In Delivered kWh Rate for Windward Community College (based on calendar year 2016) is,

$0.2127 per kWh

The All-In Rate is useful in making comparisons to All-In Delivered PPA (Power Purchase Agreement) rates for solar plus energy storage.



Page 64

Proposed Energy Conservation Measures


ECM #

Recommended Energy Conservation Measures (ECM)

Leeward Community

College

Honolulu Community

College

Windward Community

College

Kapi'olani Community

College

Dole St Offices

1 Interior LED Lighting and Controls X X X X X

2 Exterior Pole Lighting Re-design X

3 Replace interior transformers X X X X

4Replace exterior oil filled transformers X

5 Install Window Film X X X X

6 Chiller replacements X

7 Extend chilled water loop X X

8 New Chilled Water Plant and Loop

9 Install new pony chiller X

10Roof Mount / Carport / Covered Walkway Solar PV+ Energy Storage X X X X



Page 65

ECM 1 – LED Lighting Retrofits and Controls

Buildings Affected

The following is the list of buildings where this ECM is being included:

Hale Laakea

Hale Manaopono

Hale Kakoo

Hale Alakai

Hale Naauao

Maintenance Shop

Hale Uluwehi

Hale Kuhina

Hale Imiloa

Hale Akoakoa

Hale Palanakila

Hale Manaleo

Lanihuli Iki

Hale A’o

Existing Conditions

The existing interior lighting comprises of various light fixtures using second generation CFL compact fluorescent and T8 linear fluorescent technology powered by electronic ballast technology. In addition, some HID lamps and core-&-coil ballasts are still present.

The main fixture used throughout the campus office and classroom spaces are a 2x4 troffer fluorescent system. Another common fixture, a 2x2 troffer style fixture, was retrofitted 6 years ago from U-bend T8 lamp design to 2 ft. F17T8 lamps and an added reflector.

In a few rare cases, occupancy controls were implemented and currently exist, but do not appear to be performing as desired. Facility Managers have reported failing to “turn-on” or failing to “turn-off”. These systems have been identified as first generation, high-voltage relayswitching controls.

Many building attached exterior fixtures were converted to LED technology as well as exterior pole fixtures. No sophisticated controls are currently implemented in these systems.

In existing utility, shop, maintenance or storage spaces, 4 ft – 2 lamp T8 industrial fixtures are the typical design. These fixtures have been converted with simple lamp and ballast retrofits.

Across all campuses, the existing lighting is predominantly not controlled with a Johnson Controls Metasys system. Most exterior areas are using conventional time clocks which require maintenance/adjustments by security or maintenance staff.



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The predominant technology is generationally estimated to be 9-years old. Also there have been approximately 3 major technology leaps in lighting since the last conversion.

Proposed Solution

Proposed Lighting Systems – Broad Summary

This proposal is a high-level commitment to design, construct, commission, and achieve the target guaranteed savings. The primary goal is to retrofit or replace the majority of the lighting systems at the UHCC campuses with LED technology. This magnitude model for costs and savings is accomplished by implementing the vast knowledge-base of Johnson Controls lighting technology expertise, the historical familiarity with the campuses, Phase I as-built lighting data, recent field studies, interviews with Facility Managers and current systems analysis.

Proposed Lighting Systems – Detailed Summary

Target Design Goals are:

Improve the overall comfort of the lighting environment including more volumetric illumination providing equal or better foot candles and greater uniformity for interior and exterior space.

Improve safety for exterior walkways, parking lots and canopies.

To use the recommended practices established by the Illuminating Engineering Society (IES) as a guide and basis for lighting level targets.

Achieve energy savings through retrofit or replacement as well as sophisticated controls.

Reduced maintenance costs by utilizing long life span of materials, lamps, drivers and fixtures designed to last greater than 50,000 hours.

Provide solution choices geared to maximize current available LED and controls technology.

Where possible, in high use areas, provide LED technology in fixtures and components that utilize smart technology. These are Intelligent LED components that can be remotely programmed and adjusted for tasks and conditions. These fixtures can be wirelessly controlled and connected to a cloud based control interface.

Utilize fixture-based or space-based occupancy and daylighting controls.

Provide 5+ year warranty on materials.

Utilize small ‘mock-up’ installations to verify proper performance of recommended systems. To allow for owner review and approval of function, look, and color temperature.

Utilize lighting manufacturers approved by Johnson Controls Lighting Governance Team.

Utilize lighting manufacturers that have proper certifications for inclusion in Hawaii Energy rebate program (i.e. Energy Star, DLC or LED Lighting Facts)

Proposed Lighting Systems – Methodology & Basis of Design

Using the target design goals along with the costs/savings requirements of the project, a full-scale and unique analysis will be conducted for each candidate space to determine the scope viability and the level of intricacy in the system approach. An appropriate LED technology will be chosen, tailored and implemented in the designated areas of scope. Retrofits or replacements will be assigned with one of the following options:



Page 67

INTERIOR

COMPONENT DEVICE/DESCRIPTION

APPROACH APPLICATION/DESCRIPTION LampsBallast/Driver

Ballast/Driver

Ceiling Occupancy

Sensor

Daylight Sensor

Wall and Ceiling Sensors

Secure Cloud

Services

Convenient Access to Cloud Services

New Troffer Fixture

New Troffer Fixture

New Surface Fixture

LIG

HTI

NG

RETR

OFI

T/

CO

MP

ON

EN

TS

Utility Room Package 1No Controls

Application: May be used in Utility rooms, storage, and other low-use areas. Description: The existing fixture chassis will remain and the lamp / ballast / drivers components shall be replaced.

RestroomsShopsOfficesRetrofitPackage 2Local Controls

Application: May be used in Restrooms, shops, some offices and other medium-use areas. Description: The existing fixture chassis will remain and the lamp / ballast / drivers components shall be replaced. Also, minimal controls shall be implemented to take advantage of daylight and/or occupancy.

RestroomsShopsOfficesReplacePackage 3Cloud Controls

Application: May be used in Restrooms, shops, some offices and other medium-use areas. Description: The existing fixture chassis will remain and the lamp / ballast / drivers components shall be replaced. In addition, controls shall be implemented to take advantage of daylight and/or occupancy as well as cloud based scheduling or other controlling.

LIG

HTI

NG

REP

LAC

EM

EN

T/

FIX

TUR

ES

HallwaysClassroomsPackage 4Local Controls

Application: May be used in high-use areas such as hallways and classrooms.Description: The existing fixture would be removed and a new fixture would be installed. The main advantage is a new lighting system and clean look. In addition, minimal controls shall be implemented to take advantage of daylight and/or occupancy.

HallwaysClassroomsPackage 5Cloud Controls

Application: May be used in high-use areas such as hallways and classrooms. Description: The existing fixture would be removed and a new fixture would be installed. The main advantage is a new lighting system and clean look. In addition, controls shall be implemented to take advantage of daylight and/or occupancy as well as cloud based scheduling or other controlling.



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EXTERIOR: Typical Applications

COMPONENT DEVICE/DESCRIPTION

APPROACH APPLICATION/DESCRIPTIONExisting

Pole Fixture Head

Existing Pole Fixture Head

New Pole Fixture Head

New Pole Fixture Head

Daylight Sensor

Secure Cloud

Services

Wireless Control Module

Mobile Cloud

Services

New Canopy Fixture

New Solar “Off Grid” Fixture &

Pole

LIG

HTI

NG

RETR

OFI

T/

EX

TER

IOR

PO

LES

Outdoor Pole Fixtures RetrofitPackage 6Cloud Controls

Application: Existing LED pole fixtures.Description: Since the systems are somewhat efficient with first generation LED product, the addition of a wireless control module will provide, trimming, dimming and detailed scheduling. An important part of this savings profile is to dim fixtures to 20% output between the hours of 11:00 pm and 4:00 am when campus is quite vacant. Security personnel can be armed with a smart-phone-app that would allow instant manual-override control of the entire campus pole lighting. Also, by taking advantage of extremely accurate dusk and dawn times, greater savings is achieved.

LIG

HTI

NG

REP

LAC

EM

EN

T/

EX

TER

IOR

PO

LES

Outdoor Pole ReplacePackage 7Cloud Controls

Application: Existing HID (or non-LED) pole fixtures. Description: Entire fixtures shall be replaced and will include the addition of a wireless control module. This will provide, trimming, dimming and detailed scheduling. An important part of this savings profile is to dim fixtures to 20% output between the hours of 11:00pm and 4:00am when campus is quite vacant. Security personnel can be armed with a smart-phone-app that would allow instant manual-override control of the entire campus pole lighting. Also, by taking advantage of extremely accurate dusk and dawn times, greater savings is achieved.

LIG

HTI

NG

REP

LAC

EM

EN

T/

EX

TER

IOR

CA

NO

PY

Outdoor Solar PV Canopy LtgPackage 8Cloud Controls

Application: Solar PV canopiesDescription: This measure has been designed as part of the new construction Solar PV Canopies. It is to be utilized on the underside of the canopy structure. Entirely new fixtures shall be installed to light the parking areas and will include the addition of a wirelesscontrol module. This will provide, trimming, dimming, detailed scheduling and the same features as other exterior pole systems.



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Page 70

Lighting Replacement – Exterior Poles – With Cloud Controls

Existing exterior pole locations have been identified for the campus. A detailed inventory and map shall be provided for construction / as-built documentation. The following picture is an overview of the exterior pole locations that have been identified.

ECM 3 – Interior Transformers

Buildings Affected


Alaka’i

Kuhina

Akoakoa

Palanakila

La’akea

Imaginarium

Lanihuli

‘Imiloa



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Existing Conditions

Johnson Controls conducted an audit of transformers at theWindward Community College campus. Johnson Controlscataloged the location, physical dimensions, electrical capacity, and electrical panels on both the high voltage and low voltage side for each accessible transformer. Most of the transformers are located inside electrical and mechanical rooms at the WCCcampus.

A complete listing of the transformers and their locations can be found in the table below.

Transformer Replacements

No. Location ID/TagTransformer Designation

Size (kVA)

Qty

Primary-Secondary

Voltage (#Phases)

Indoor/ Outdoor

Note

1Bldg Alaka'i Basement

44340 T1 75 1480-208/120

(3 Ph)Indoor


44341 T2 50 1480-208/120

(3 Ph)Indoors


44342 T3 37.5 1480-208/120

(3 Ph)Indoors


44343 T4 37.5 1480-208/120

(3 Ph)Indoors

5Bldg Kuhina Room 108

44344 2BA 112.5 1480-208/120

(3 Ph)Indoors

6Bldg Akoakoa

Room 11944345 2DC1 75 1

480-208/120 (3 Ph)

Indoors

7Bldg Akoakoa

Room 23544346 2DD1 45 1

480-208/120 (3 Ph)

Indoors

8Bldg Akoakoa

Room 23544347 2DE1 45 1

480-208/120 (3 Ph)

Indoors

9Bldg Akoakoa

Room 15344348 2DK 225 1

480-208/120 (3 Ph)

Indoors

10Bldg Akoakoa

Room 15344349 2DB 30 1

480-208/120(3 Ph)

Indoors

11Bldg Akoakoa

Chiller Rm44350 2DM 15 1

480-208/120 (3 Ph)

Indoors

12Bldg Palanakila

Room 25244351 JE 500 1

480-208/120 (3 Ph)

Indoors

13Bldg Palanakila

Room 20644352 2JD 75 1

480-208/120 (3 Ph)

Indoors



Page 72

Transformer Replacements

No. Location ID/TagTransformer Designation

Size (kVA)

Qty

Primary-Secondary

Voltage (#Phases)

Indoor/ Outdoor

Note

14Bldg Palanakila

Room 15144353 2JC 30 1

480-208/120 (3 Ph)

Indoors

15Bldg Palanakila

Room 11444354 2JA 112.5 1

480-208/120 (3 Ph)

Indoors

16Bldg Palanakila

Room 11444355 JBB 100 1

480-208/120 (3 Ph)

Indoors

17Bldg Palanakila

Room 11444356 2JB 75 1

480-208/120 (3 Ph)

Indoors

18Bldg La'akea

Room 22344357 2DP1 150 1

480-208/120 (3 Ph)

Indoors

19Bldg La'akea Room 315A

44359 2DP2 150 1480-208/120

(3 Ph)Indoors

20Bldg Imaginarium

Room 10944360 2P 112.5 1

480-208/120 (3 Ph)

Indoors

21Bldg Lanihuli

Telescope Floor44361 A 30 1

480-208/120 (3 Ph)

Indoors

22Bldg 'Imiloa Room 110A

44362 2KMA 30 1480-208/120

(3 Ph)Indoors

23

Bldg 'Imiloa Basement Mech

Rm44363 Air 20 1

480-208/120 (3 Ph)

Indoors

New transformer needs to be relocated to the right of its current location due to equipment above

24

Bldg 'Imiloa Basement

Electric Rm44364 2DPK 300 1

480-208/120 (3 Ph)

Indoors

Proposed Solution

In general, the new transformers will match the existing ones in physical size, shape, and location, as well as electrical capacity. In very few instances, the new transformer may have to be moved in one direction or another to facilitate continued maintenance on the transformer. However, in those rare cases, the new transformer will be placed in the same room as the existing one. In all cases, existing wires and circuit breakers will remain in place and will be used with the new transformers.

The new transformers will be high-efficiency transformers, specified to fit in the same physical space as the existing transformer, unless relocation is required due to accessibility concerns. The new transformers will use the existing mounts and brackets as well as having the exact same lug configuration as the existing transformers. This will ensure the existing electrical wires will correctly connect to the new transformer.

The energy savings associated with transformer replacements is in the form of reduced energy loss, typically in the form of heat, as electricity passes through the transformer. New, more



Page 73

efficient transformers emit less heat (energy loss) than do the existing ones, thus allowing more of the energy entering the transformer to pass through as electricity. This savings is seen as a greater kW output of the new transformers as compared to the existing ones. This kW savings is realized the entire time the transformer is energized – typically 24 hours a day, 7 days a week. This results in a quite substantial kWh savings over the course of a year.

ECM 5 – Window Film

Buildings Affected


La'akea (Library)

Hale Ao

Haleimiloa

Existing Conditions

These three buildings on the Windward Community College campus have windows that allow extra heat conduction which can be reduced by the application of additional window film to the windows. Glass has poor insulating properties and in addition there is the solar impact through the glass. The solar impact of the glass has a very dramatic impact on the cooling requirements of the buildings. Comfort levels for interior building spaces can be improved from this modification. Also, there will be some reduced electricity usage for air conditioning. Installing new window film to exterior windows can reduce the Solar Heat Gain Coefficient (SHGC) of the existing windows.

Most of the areas listed above have windows without sufficient shading which allow large heat gains from direct sunlight, some during the morning or afternoon when the sun is lower on the horizon. Heat conduction through glass windows is a function of the resistance to heat flow of the glass itself and the difference between the inside and outside temperature. Solar radiation is the function of the resistance of the shading effect multiplied by the cooling load factor and the SHGC. The thermal property of the glass reduces heat transfer by delaying the impact of outside temperature changes on the conditioned space. Adding tinted window film increases the thermal insulation effect to a small degree. The more dramatic effect is by reducing the shade coefficient, consequently lowering the space-cooling load due to solar radiation.

Northwest glass in Hale Ao building



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Proposed Solution

Johnson Controls proposes to install new window film to the interior glass of windows buildings listed above. The scope of work for this ECM includes the following:

Removal and Demolition: Remove any existing window film and prepare glass surface as required for new film installation. Normal measures will be included to protect any items exposed that can't be removed from the installation process. Installers will use drapes, drop clothes and plastic covers to provide protection to exposed and non-removable items. Window gaskets will remain in place as a normal part of the installation process.

Clean Window Surface: Completely clean the interior window surface per the window film manufacturer’s instructions.

Window Film Preparation: Measure, cut and ready the window film for application.

Release Liner Removal: Properly prepare and remove the release liner as applicable ensuring no contamination adheres to the surface and apply solution to the surface for proper installation.

Window Film Application: Apply film to glass and slide to approximately 1/16th inch from one edge of the window. Remove large wrinkles or bubbles as required. Apply solution to the surface of the film and squeegee the surface as required to remove excess solution from under the films surface.

Window Film Splicing: Film splicing will be kept to a minimum, and when inevitable due to large glass dimensions, Film splices will be done as much as possible on out of reach places for building occupants.

Trim: Properly trim excess film from surface.

Final Squeegee: Wet surface with solution and perform final squeegee.

Window Film Inspection: Following the Adhesive Cure Time, installed Window Film will be inspected for acceptability (typically within one day of installation). Inspections will be performed during periods of Natural Daylight with emphasis on the items:

Dirt Particles Air Bubbles Creases

Hair and Fibers Water Haze Edge Lift

Adhesive Gels Scores and Scratches Nicks and Tears

Fingerprints Film Distortion Proper Tint

Location/ Building

Existing glassGlass sqft

Window film application

Hale A’o Dual pane low-e 175Only (1) classroom with Southwest facing glass. Northwest facing glass on classroom has Ceramic 35 film already installed.

Haleimiloa Single pane 680

Library Dual pane 5,760Excluding glass under the covered walkway entrance.

Total 6,615



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The following work items are excluded from the proposed scope of work:

Glass doors were not included in this scope of work because any film installed on them would be prone to damage and/or scratching.

Repair or replacement of existing windows is excluded in this scope of work. If any windows are found to be broken, Johnson Controls will report the deficiency to the college for repair or replacement prior to Johnson Controls installing the window film.

The scope of work does not include the repair or installation of windows or doors.

The scope of work does not include the repair or installation of any structural systems.

The scope of work does not include repair or adjustment of any springs or opening mechanisms.

Moving of all office furniture and moveable objects away from windows to be modified.

ECM 6 – Chiller Replacements

Buildings Affected


Akoakoa Chiller Plant

Palanakila Chiller Plant

Existing Conditions

The two existing chilled water plants currently serve several buildings at Windward Community College. The chilled water plant equipment are listed as follows:

Hale Akoakoa Central Plant

Two 130-ton Trane RTHB Chillers

One Evapco Cooling Tower with a 30-hp fan motor

Two 25-hp condenser water pumps

Variable-Primary Pumping chilled water pumping

Palanakila Central Plant

Two 120-ton Carrier 30HXC126 Chillers

Two Marley Quadraflow Cooling Towers, each with a 10-hp fan motor

Two 25-hp condenser water pumps

Variable-Primary Pumping chilled water pumping



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Proposed Solution

Replacing the chillers, cooling towers and condenser water pumps will provide for significant energy savings for the WCC chilled water system. The new chilled water plant equipment to be installed are listed as follows:

Hale Akoakoa Central Plant

One 225-ton York YMC2 Chiller

One 5.8-ton MultiStack DHW Heat Pump Chiller

One new Cooling tower with VFD fan motor

One condenser water pump with VFD motor

Palanakila Central Plant

Two 165-ton York YMC2 Chillers

Two Marley Quadraflow Cooling Towers, each with VFD fan motor

Two condenser water pumps with VFD motors

ECM 7 – Extend Chilled Water Loop

Buildings Affected


La'akea (Library)

Existing Conditions

The beautiful new La’akea Library was opened for WCC usage in 2012. The building was designed with, and achieved,the goal of attaining a LEED certification.However, the air conditioning system installed used less energy efficient air-cooled direct expansion (DX) cooling units.

Proposed Solution

The WCC campus-wide chilled water system can be expanded to reach the library building. The Library’s two air handling units (AHUs) can be upgraded to use chilled water for cooling the building..The two existing AHUs’ DX cooling coils will be removed and replaced with chilled water cooling coils. The two existing air cooled DX compressor and condenser units located on the roof will be removed.

During the Phase One expansion of the WCC chilled water system, piping connections were planned near the Hokulani (Imaginarium) so that the library system could eventually be added.



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ECM 10 – Solar PV + Energy Storage

Existing Conditions

Given the abundant solar resource that exists in Hawaii, solar PV has long been an attractive alternative for providing electricity for a facility. With recent changes to net metering rules, there is no longer value to solar PV that is exported from a facility – in fact, export is no longer supported. The result of this is that a PV system can be sized at a fraction of peak demand, solar PV output can be curtailed or the solar PV can be implemented alongside an energy storage system. From financial modelling that we have done, the later presents the best economic return.

For this ECM, we are proposing battery energy storage to maximize the value of the solar PV that is being installed, reduce utility bill costs and provide an important component for the next step toward achieving a net zero installation.

To determine the optimal sizing, our engineers have used a sophisticated modelling tool that utilizes 15-minute interval data (load adjusted for the other ECMs that are proposed as part of this performance contract) and the specific rates and tariff structure at each campus to optimally size the combination of solar PV and battery. Additionally, we have considered the space required and available and the desire to get as close to net-zero as possible in our analysis. Hundreds of alternatives have been considered before ultimately landing on the best size and configuration for each campus.

Proposed Solution

The ultimate goal of the solar PV plus energy storage is to maximize renewable energy use on each campus, after the load is reduced as much as feasibly possible through energy conservation measures. The resultant load after energy conservation measures becomes the baseline from which we are designing the new solar PV plus battery energy storage. ForWindward Community College, the goal is to design a system that would allow the campus to get closer to Net Zero for electrical energy use, with Net Zero defined as having a solar PV system that produces as much as or more energy that is consumed by the campus on an annual basis.

The proposed solution for the UHCC system is to deploy distributed energy storage solution alongside the solar PV.

Since the existing roofs on campus are not suitable for solar PV systems, we designed the next phase of Solar PV to be integrated with new canopy shade structures in the parking lot, along the rear road, and between the parking lot and open field in central campus. We examined both long span and dual-tilt systems. Each layout is shown in the pictures on the following phases.



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Site Plan at Windward Community College

Example Dual-Tilt Installations



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Example Long Span Installations

The total amount of solar PV required to achieve Net Zero, after accounting for the energy reduction through energy conservation measures is over 3 MW (to be updated based on final ECM selection and final design and interconnect drawings). The optimal amount of energy storage, based on the need to recapture potentially curtailed energy and shift demand peaks, is 3 hours. Since there is only 1.7 MW of solar PV identified in this site plan, more space would need to be made available to install more solar PV.

The distributed energy storage system is a battery-based energy storage system. While the specific sizes of the storage systems vary between sites, the fundamental building blocks are the same. We will provide a containerized energy storage system that includes battery cells packaged into modules and placed into racks (not unlike data center-type racks). Each rack will be approximately 91kWh and multiple racks will be installed together in a container to achieve the required kWh to provide the most economic value when coupled with the PV at the site. Each container will have a dedicated HVAC unit on it to ensure the environmental conditions for the batteries remain in a safe, acceptable place. Additionally, fire suppression and access control systems will be provided in the container to further ensure that the battery storage system operates safely. A layout of an example energy storage container is shown below.

Along with the battery portion of the energy storage solution, we will be providing an inverter. The inverter is responsible for controlling the charge and discharge of the battery. Again, while we will be providing various sized inverters at the different facilities, the basics are similar. The inverter that we’ll use for this project is a skid packaged inverter setup that also includes transformers, disconnects, metering, and controls. This combined package simplifies installation and cost on the project. An example of the inverter / transformer package is shown below.



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The final notable component of the distributed energy storage solution is the controls. The battery will be controlled to perform two (2) applications:

1. Equal Priority. Load Shifting. Consume energy from the newly installed PV systemwhen the system is being curtailed and deliver it when the PV system cannot meet thecollege’s load.

2. Equal Priority. Peak Shaving. Deliver energy when the load is causing a new utilityconsumption peak.

This application will be performed using the Metasys building control, which is already widelyutilized to control several energy-related functions throughout your campus. The new Metasysequipment will consist of a small Network Integration Engine (NIE3910-2). This NIE will host theMetasys Peak Shaving application as well as integrate the batteries. To do this, we will assignan IP Address and a Metasys Device Address for the NIE. We will install the NIE at the batterycontainer. The NIE will communicate with the battery controller to integrate the distributed energy storage system into the Metasys system. A MOD-BUS integration within the NIE will beused to communicate with the Johnson Controls Battery Controller. The entire system will bemonitored remotely.

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