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ENERGY EFFICIENT INVESTMENTS ING.

Energy Efficient Investments, Inc.

Measurement and Verification
Annual Report
Period: 2016-2018 Baseline

For:

Nashua, NH School District

Prepared by:
EE], Inc.
Energy Advisors Group
Steve Tarantino, LEED AP O+M, EIT

Prepared on:

01/27/20

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ENERGY EFFICIENT INVESTMENTS INC.

Table of Contents

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IPMVP Approved M&V Options .....00...000 0c nn EEE DOL Lett G EEE E bi nns 3
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Baseline Development and Performance Period.......00....00.0 coco ee eee ebb none et tebe tii 18
Conditional Savings Guarantee ..00.0.000000 UL EEE ttn EERE nee bes 20
Appendix A - Utility Bills provided by School District .....0.....0000 coo cee ccc c een bette nen eet eee e tiie 21

ENERGY EFFICIENT INVESTMENTS INC.

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Introduction

This Measurement and Verification Plan has been prepared as a guide in determining the energy savings as a

result of the installed Energy Conservation Measures. In this document, EEI will show the baseline
calculations used to determine cost savings and how we can evaluate the installed measures to ensure the
Savings Guarantee is being satisfied.

EEI utilized the International Performance Measurement & Verification Protocol, 2002 Revision as a
technical reference for this document. In the Savings Measurement & Calculation section of this document,

EEI has prepared a spreadsheet that will be used to calculate and document savings throughout the guarantee

period. The M&V Options to be used are outlined in the Project Overview section of this document.

EEI will submit a Measurement & Verification Report to the customer twice annually throughout the

guarantee period.

IPMVP Approved M&V Options

or systems; engineering estimates, spot-, short-term, orlong-term
measurements of sy stem components; and long-term whole-building utility
meter data. Afterthe model has been calibrated, savings are determined by
comparing a simulation of the baseline witheithera simulation of the
performance period or actual utility data.

M&V Option Performance! and Usage? Factors Savings Calculation
Option A— This option is based on a combination of measured and estimated factors Direct measurements and
Retrofit Isolation with | when variations in factors are not expected. Measurements are spot or estimated values,
Key Parameter short-term and are taken at the component or system level, both inthe engineering calculations
Measurement baseline and post -installationcases. Measurements should include the key | and/or component or
performance parameter(s) which define the energy use of the ECM. system models often
Estimated factors are supported by historical or manufacturer’s data. developed through
Savings are determined by means ofengineering calculations of baseline regression analysis
and post-installation energy use basedon measured andestimatedvalues | Adjustments to models are
not typically required.
Option B— This option is based on periodic or continuous measurements of energy use | Direct measurements,
Retrofit Isolation with | taken at the component orsystem level when variations in factors are engineering calculations,
All Parameter expected. Energy orproxies of energy use are measured continuously . and/or component or
Measurement Periodic spot orshost-term measurements may suffice when variations in system models often
factors are not expected. Savings are determined from analysis of baseline | developed through
and reporting period energy use or proxies of energy use. regression analysis
Adjustments to models may
be required.
Option C- This option is based on long-term, continuous, whole-building utility Based on regression
Utility Data Analysis meter, facility level, orsub-meterenergy (or water) data. Savings are analy sis of utility meter
of Whole Building determined from analy sis of baseline and reporting period energy data. data to account forfactors
Typically, regression analysis is conducted to correlate with and adjust that drive energy use
energy use to independent vanables such as weather, but simple Adjustments to models are
comparisons may also be used. typically required.
Option D— Computer simulation soitware 1s usedto model energy performance of a Based on computer
Calibrated Computer | whole-facility (or sub-facility). Implementation of simulation modeling simulation model (such as
Simulation requires engineering expertise. Inputs to the model include facility eQUEST or HAP)
characteristics; performance specifications of new and existing equipment | calibrated with whole-

building or end-use metered
data or both. Adjust ments
to models are required.

‘ Performance factorsindicate equipment or system performance characteristics, such askWiton fora chiller orwatts/fixture for lighting.

? Operating factorsindicate equipment or system operating characteristics such as annual cooling ton-hours for chillers or operating

hours forlighting.

ENERGY EFFICIENT INVESTMENTS INC.

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Project Overview

1, PROJECT SUMMARY

The goal of this project is to achieve energy savings through upgrades to the buildings’
electrical, plumbing, mechanical, and building envelope. This project will result in improved
building performance, thereby reducing energy and maintenance costs.

School Address SF
Nashua North High School 8 Titan Way 420,000
Nashua South High School 36 Riverside St. 430,000

2. M&V OPTION SUMMARY

ECM: Nashua North High School M&V Option Used
1. LED Lighting Option A
2. Controls Upgrade Option C
3. Weatherization Option C
4, Transformers Option B
5, Retro-Commissioning Option C
6. Mini Splits Option B
7, Condensing Hot Water Option A
8. Targeted Balancing Option A
9. Kitchen Hood Option B
10, Walk In Coolers Option B

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ENERGY EFFICIENT INVESTMENTS INC.

ECM: Nashua South High School

M&V Option Used

1. LED Lighting Option A
2. Controls Upgrade Option C
3. Weatherization Option C
4, Transformers Option B
5, Retro-Commissioning Option C
6. Mini Splits Option B
7, Condensing Hot Water Option A
8. Targeted Balancing Option A
9. Kitchen Hood Option B
10, Walk In Coolers Option B

In this section of the document we will define the Energy Conservation Measures we have evaluated
for this project and how each M&V option will be implemented. Careful consideration was given to
each measure and its interaction with the overall building performance.

We have standard categories that we use for defining measures, from the standard categories we then
apply specifics to each buildmg and measure. General ECMs typically do not help Customers and
Consultants determine which measures should be implemented. This is why we attempt to be as
specific as possible. With the specificity, we are better able to estimate the implementation cost of

the measure.

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ENERGY EFFICIENT INVESTMENTS INC.

Nashua North High School

ECM 1- LED Lighting

The schools currently utilize a combination of T8 and TS fluorescent lighting. EEI proposes replacing the
existing fixtures with new LED lighting. EEI performed a detailed survey of the interior and exterior spaces
in order to identify opportunities in which we can improve lighting quality, reduce maintenance costs, and
save energy.

The existing lighting demand (kW) per fixture, hours of operation, fixture quantities, and recommended
retrofits are based on the physical inspection and site visits conducted by EEI in 2018. As a result of the
survey and analysis, EEI has developed a high efficiency lighting upgrade project that will provide the
schools listed with new LED fixtures with controls, resulting in guaranteed annual energy savings and a
reduction in electrical demand.

LED type lighting provides significant illumination, has longer life expectancy, increased savings in electric
consumption, and provides dimming capabilities. Also, by standardizing all fixtures will reduce future
maintenance requirements.

LED fixtures in a school environment have an estimated life of more than 20 years. There is significant
maintenance savings when LED fixtures are used due to their longer lifespan.

All light energy eventually converts to heat. The conversion to higher efficiency LED fixtures will reduce the
building’s lighting energy intensity (kW/sq.ft), therefore impacting the HVAC heating and cooling loads.
Converting to LED lighting will eliminate 2,963 mmBTU waste heat annually. The reduction in lighting
waste heat will increase the HVAC load during heating season, approximately 12,685 therms annually.
Conversely, the HVAC load will decrease in the cooling system, approximately 59,198 kWh annually. The
net HVAC utility impact is an increase in cost of approximately $3,805. This increase in cost has been
subtracted from the energy savings for the ECM.

The following fixture types are to be installed:

Install (2,953) LED 2x4 and 2x4 retrofit fixtures with Spacewise control and wireless dimming capability
Install (271) LED high bay fixtures with Spacewise control and wireless dimming capability

Install (461) LED recessed can fixtures

Install (2,310) LED tubes and (1,350) LED drivers

Install (139) LED lamps

Install (180) LED round decorative fixtures

IPMVP Option A, Retrofit Isolation with Key Parameter Measurement, has been chosen for this ECM. This
option has been chosen because the only parameter changing in the implementation of this ECM is the
fixture input wattage. EEI will use current transducers to measure a 20% sample of the fixture input wattage
before and after ECM implementation.

ECM 2- Controls Upgrade

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ENERGY EFFICIENT INVESTMENTS INC.

EEI proposes installing a complete DDC system as an extension of the existing N4 Enterprise
Supervisor.

Scope of work:

Demo the existing VAV controllers, keeping the existing communication wiring operational for the
existing controllers. Install new BACnet IP DDC controllers, new space sensors, and new discharge air
sensors. Install network controller hardware and software updates as needed.

IPMVP Option C, Utility Data Analysis of Whole Building, has been chosen for this ECM. This option
has been chosen because the wide ranging effects of a controls system on building energy performance
does not lend itself to isolation measurement. EEI has established the building baseline energy usage
using utility data, see “Baseline Development and Performance Period” section. The building energy
usage will continue to be recorded after the ECM implementation and compared to the baseline to
determine savings. The savings guarantee is contingent on several buildmg operations factors described
in the Conditional Savings Guarantee section later in this report.

ECM 3-— Weatherization

EEI completed a detailed building audit and verified suspected air leakage locations and found
opportunity to improve building performance and save energy. Air leakage is caused by pressure
differences subject to variations in wind velocity and HVAC systems. In order to control heating and
cooling loads, and allow the mechanical systems to operate effectively, pressure differences from the
outdoor environment to the door building spaces must be controlled. The best way to do this is by
tightening the building envelope through insulating and air sealing. This will extend the life cycle of the
building by protecting it from the elements and minimizing moisture carried by air which penetrates the
building. Also, insulation and air sealing increases thermal performance of the building and the comfort,
health and safety of the building occupants.

Scope of work:

Inspect exterior doors for deficiencies to the weather stripping and door sweeps. Install new weather
stripping and door sweeps as needed.

IPMVP Option C, Utility Data Analysis of Whole Building, has been chosen for this ECM. This option
has been chosen because the wide ranging effects of weatherization on building energy performance
does not lend itself to isolation measurement. EEI has established the building baseline energy usage
using utility data, see “Baseline Development and Performance Period” section. The building energy
usage will continue to be recorded after the ECM implementation and compared to the baseline to
determine savings. The savings guarantee is contingent on several buildmg operations factors described
in the Conditional Savings Guarantee section later in this report.

ECM 4- Transformers

EEI evaluated the electrical systems of the s chool buildings and determined that the existing
transformers at Nashua North High School are standard efficiency models and are not designed to
handle the loads of modern facilities. The most common efficiency for commercial and industrial
transformers supplying linear loads in the 30-150 kVA range is 95%, as compared to 98% for a high
efficiency model. Further, conventional transformer losses, which are non-linear, increase by 2.7
times when feeding computer loads. Also, if transformers are not properly vented to the exterior, their
heat output adds to the building cooling load.

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Pistol Ammunition
Rds per
Caliber Product Code Description Price case
.25 cal 3501 50 gr. FMJ Blazer Aluminum $185.59 1000
23602 35 gr. Hollow Point $255.77 500
32 Cal 3503 71 gr. FMJ Blazer Aluminum $266.45 1000
.380 cal 5202 95 gr. Blazer Brass $223.75 1000
3505 95 gr. FMJ Blazer Aluminum $199.21 1000
53608 95 gr. TMJ Lawman Brass $171.67 1000
53606 90 gr. Gold Dot Hollow Point $508.50 1000
9mm 3509 115 gr. FMJ Blazer Aluminum $179.82 1000
5200 115 gr. FMJ Blazer Brass $174.37 1000
3578 124 gr. FMJ Blazer Aluminum $179.82 1000
3460 124 gr. TMJ CF (reduced lead) Blazer Aluminum $187.69 1000
3582 147 gr. FMJ Blazer Aluminum $185.44 1000
3462 147 gr. TMJ CF (reduced lead) Biazer Aluminum $187.69 1000
53650 115 gr. TMJ Lawman Brass $185.44 1000
53651 124 gt. TMJ Lawman Brass $191.06 4000
53620 147 gr. TMJ Lawman Brass $191.06 4000
53824 124 gr. TMJ CF (reduced lead) Lawman Brass $194.65 1000
53626 147 gr. TMJ CF (reduced lead) Lawman Brass $194.65 4000
53365 100gr. No-lead Frangible $376.50 1000
53614 115gr. Gold Dot Hollow Point $303.28 1000
53618 124gr. Gold Dot Hollow Point $303.28 1000
53617 124gr. +P Gold Dot Hollow Point $303.28 1000
53619 147gr. Gold Dot Hollow Point $303.28 1000
23614 124 gr. +P HP "SHORT BARREL” $368.42 500
9X18 Makarov 3506 95 gr. FMJ Blazer Aluminum $236.39 1000
38 Special 3519 158 gr. +P FMJ Blazer Aluminum $227.46 1000
3475 158 gr. +P TMJ CF (reduced lead) Blazer Aluminum $202.30 1000
3522 158 gr. LRN Blazer Aluminum $191.30 1000
3514 125 gr. +P JHP Blazer Aluminum $227.46 1000
53733 125 gr. TMJ Lawman Brass $252.87 1000
53750 158 gr. +P TMJ Lawman Brass $252.87 4000
53833 158 gr. +P TMJ CF (reduced lead) Lawman Brass $255.12 4000
53699 156 gr. TMJ CF (reduced lead) Lawman Brass $255.12 1000
§3722 125 gr. Gold Dot Holtow Point $352.78 1000
53720 125 gr. +P Gold Dot Hollow Point $352.78 1000
53921 135 gr, +P Gold Dot Hollow Point $352.78 1000
367 Magnum 3542 158 gr. JHP Blazer Aluminum $272.82 1000
53960 458 gr. Gold Dot Hollow Point $626.14 1000
23917 135 gr. Hollow point “SHORT BARREL" $426.30 500

2019 New Hampshire

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ENERGY EFFICIENT INVESTMENTS INC.

EEI recommends the replacement of existing efficient transformers in order to improve the energy
efficiency of the electrical distribution systems through the replacement of the transformers with
new high efficiency units. The scope of work for this measure would include upgrading:

32 Transformers

(5) ISKVA
(4) 30 kVA
(2) 45 kVA
(1) 75 kVA
(6) 112.5 kVA
(1) 145kVA
(1) 150kVA
(1) 175 kVA
(3) 220 kVA
(4) 225 kVA
(2) 300 kVA
(2) 500 kVA

IPMVP Option B, Retrofit Isolation with All Parameter Measurement, has been chosen for this ECM. This
option has been chosen because the only parameters changing in the implementation of this ECM are the
transformer losses. EEI will use current transducers to measure the losses for each transformer over a one
month period to obtain a representative transformer loading profile.

ECM 5- Retro Commissioning

This is an allowance for an engineerig and maintenance team to install, repair, and replace any
damaged existing to remain equipment. Existing AHUs will include software revisions to reduce energy
consumption. Includes 5 years of analytics reports.

IPMVP Option C, Utility Data Analysis of Whole Building, has been chosen for this ECM. This option
has been chosen because the wide ranging effects of Retro Commissioning on building energy
performance does not lend itself to isolation measurement. EEI has established the building baseline
energy usage using utility data, see “Baseline Development and Performance Period” section. The
building energy usage will continue to be recorded after the ECM implementation and compared to the
baseline to determine savings. The savings guarantee is contingent on several building operations
factors described in the Conditional Savings Guarantee section later in this report.

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ENERGY EFFICIENT INVESTMENTS INC.

ECM 6-—- Mini Splits
EEI proposes removing the (19) existing Mitsubishi ductless splits.

Furnish and install (19) new Mitsubishi condensing units of the same capacity of the existing system.
Counts are as follows: (7) 1-ton ceiling cassette systems, (3) 1.5-ton ceiling cassette systems, (1) 2-ton
ceiling cassette system. (1) 1-ton wall mounted system, (6) 1.5-ton wall systems, (1) 2-ton wall
mounted system. New units will be furnished with wind baffles for low ambient cooling and new wall
mounted thermostats.

IPMVP Option B, Retrofit Isolation with All Parameter Measurement, has been chosen for this ECM. This
option has been chosen because the only parameter changing in the implementation of this ECM is the mini
split Energy Efficiency Ratio (EER). EET will use current transducers to measure the EER for a 20% sample
of the mini splits over a one month period to obtain a representative loading profile.

ECM 7—- Condensing Hot Water

The current water heating units are standard efficiency. This measure would be to replace the current
system with high efficiency condensing Lochinvar units.

IPMVP Option A, Retrofit Isolation with Key Parameter Measurement, has been chosen for this ECM. This
option has been chosen because the only parameter changing in the implementation of this ECM is the
combustion efficiency. EEI will use a flue gas analyzer to measure each water heater efficiency before and
after ECM implementation.

ECM 8 -— Targeted Balancing

EEI proposes targeted balancing of the existing ventilation systems. When ventilation units are over -
ventilating it causes unnecessary conditioning of outside air. This measure would include checking the
air flow at the diffusers to ensure that it meets current code required flow.

IPMVP Option A, Retrofit Isolation with Key Parameter Measurement, has been chosen for this ECM. This
option has been chosen because the only parameter changing in the implementation of this ECM is the
airflow amount. EEI will use airflow hoods to measure a 20% sample of diffuser airflow cfm before and after
ECM implementation.

ECM 9- kitchen Hood

The existing kitchen exhaust system has a basic on/off operation. This results in the system operating during
times when it doesn’t need to be operating and heated or cooled air is exhausted. This measure is for
installing a Captive Aire unit with VFD drives on the kitchen hood exhaust fans. A temperature sensor will
be installed in the duct work and control operation based on the temperature inside the duct.

IPMVP Option B, Retrofit Isolation with All Parameter Measurement, has been chosen for this ECM. This
option has been chosen because the only parameter changing in the implementation of this ECM is the
kitchen hood exhaust fan speeds. EEI will use Energy Management System (EMS) trending data over a one
month period to obtain a representative loading profile.