INVESTMENT GRADE AUDIT SUMMARY REPORT JENKINTOWN … · 2019. 6. 11. · distribution services for both natural gas and electricity. The electric commodity charges are provided through

JUNE 7, 2019

INVESTMENT GRADE AUDIT SUMMARY REPORT

JENKINTOWN

SCHOOL DISTRICT in support of Act 77/39 Guaranteed Energy Savings Agreement (GESA)

Reynolds Energy Services, Inc.

3300 North 3rd St.

Harrisburg, PA 17110

717.238.5737

www.ReynoldsSolutions.com

Jenkintown School District Page 1

June 7, 2019 IGA Summary – REV FINAL

Investment Grade Audit Summary

Table of Contents

Project Summary

• Overview

• Utility Analysis

• Scope of Work Summary

• Savings Summary

• Financial Summary

Schedules (exhibits to be included with the GESA)

A Scope of Work

B Project Costs and Cash Flow Analysis

C Guaranteed Energy Savings

D Compensation to Reynolds

E Baseline Energy Consumption

F Baseline and Adjustments; Measurement and Verification Methodologies

G Construction and Installation Schedule

H Systems Start-Up and Commissioning

I Standards of Comfort – Set Points

J Maintenance Responsibilities




Overview

Reynolds Energy Services (RES) has completed the Investment Grade Audit (IGA) for Jenkintown School

District (JSD). During this process, RES has analyzed the overall potential for energy and cost savings;

developed detailed scopes of work; estimated pricing and savings estimates; and has compiled the

financial analysis. This document summarizes the utility analysis, scope of work and project financial

analysis for the project.

The goal of this project is to achieve a reduction in purchased energy and utilize the associated cost savings

to pay down the cost of the planned improvements. Initial auditing indicated that the two separate

existing HVAC control systems appear to not be effectively scheduling building systems, nor providing

efficient space temperature control. The major source of energy savings will be achieved through the

installation of a new building automation system (BAS), as well as commissioning and installing associated

sensors to be able to optimize the operation of the building HVAC systems.

This project will be implemented under a guaranteed energy savings agreement (GESA) with a guaranteed

fixed price for construction and implementation. The following pages include a summary of the key

information about this project, including the utility basis for savings, a summary of the scope of work, the

expected annual energy and cost savings produced from project implementation, and the financial

justification for the project.

Utility Analysis

The following tables and figures illustrate the total baseline energy use and cost of Jenkintown School

District. This baseline represents the projected energy use and costs without implementing any energy

saving measures. This becomes the baseline or starting point for savings estimates and financial analysis.

Reynolds did a building square footage analysis and is using approximately 150,000 sqft for benchmarking

and evaluation purposes.

The starting point for the energy audit was to assess the current annual energy usage for the building. To

begin this process we examined and analyzed 24 months (June 2017 through May 2019) of utility bills. The

table below contains the annual utility summary for the site.

TABLE: Annual Utility Summary by Building

Costs used in the analysis are indicative of utility information provided by Jenkintown SD. PECO provides

distribution services for both natural gas and electricity. The electric commodity charges are provided

through Direct Energy. The natural gas commodity charges are provided through UGI Energy Services.

Electric rates were derived to be $0.069/kWh and $7.10/kW. A combined natural gas rate of $0.70/CCF was

derived from both accounts provided. Water billing is provided through Aqua Pennsylvania, Inc. and their

rates start at $10 per kGal. for the first 10 kGal., then are tiered at $8.875 for the next 23 kGal., and $7.288 for

the remaining kGal. Reynolds did not pursue any water savings as a part of this GESA; therefore, the rates

were not used in the savings analysis.

Building Name kWh Peak kW $ ccf $ kgal $ $ $/sf-yr

Jenkintown SD Bui lding 1,682,907 431 151,251$ 69,281 48,843$ 1,061 8,879$ 208,973$ 1.39$

Electric Water/SewerFuels TOTAL




Energy Benchmarking Analysis

The next step is to analyze how and where the energy is being used in the building by evaluating its energy

use intensity (EUI). The EUI of the building is compared to average or expected use of peer buildings in

similar climate conditions as well as to other Pennsylvania school buildings in our database. Additionally,

we evaluate the building against proven results from Reynolds projects. The following table summarizes

the energy and cost indices for the Jenkintown SD building as compared to these other indices.

TABLE: Resource and Cost Indices By Building

As the figure below indicates, savings potential exists in both electrical usage and fuel usage when

compared to the reference indices for typical buildings.

FIGURE: Energy Indices by Building

Typically, Reynolds has achieved reductions in both of these areas through implementation of new lighting

and HVAC systems. Given the scope of this project, Reynolds combined statistical results as well as an End-

Use Analysis to derive savings. The End-Use Analysis is futher described in the following section.

COSTS

Electric Fuels Tota l Energy Water Energy

Building Name kBTU/sf-yr kBTU/sf-yr kBTU/sf-yr kgal/sf-yr $/sf-yr

Jenkintown SD Bui lding 38.3 47.6 85.9 7.1 1.33$

Reynolds Projects (K-12 PA) 24.7 35.6 60.3 - 1.13$

K-12 Reference (USDOE) 23.6 44.7 68.3 na na

RESOURCES




End-Use Analysis

With the overall usage of the facility being analyzed we look at how and where the energy is being used in

the building, this is referred to as “End Use Analysis”.

We perform an end use analysis to investigate how and where the energy is being used in the building by

using data from HVAC schedules, site observations, and hours provided during site visits. Typically RES aims

for a modeled value within 5% accuracy of the given baseline data. The following page shows a modeled

accuracy within 5% of annual values. The end use analysis is detailed in the following pages. The chart

below summarizes the results of the end use analysis and provides a breakdown of where the combined

electric and natural gas costs are being spent as a percentage of end use.

END USE UTILITY COST

The pie chart helps further validate that most of costs and savings potential lies within the HVAC

components of the facility’s utility expenditures (over 70%). The proposed BAS improvements will impact

these areas in energy usage and cost savings. The next page identifies the areas (highlighted in yellow) that

will be impacted as a result of the energy savings project.







Scope of Work Summary

The main goal of this IGA is to identify and develop a scope of work that improves operations and

maximizes savings to be leveraged toward buying down the overall project cost. At the same time, this

scope needs to meet the needs of the District, be cost effective, and fit within the project’s overall financial

constraints.

The following section summarizes the scope of work broken down by energy efficiency measure (EEM).

EEM #1 – Building Automation System Improvements

JSD has two building automation systems (BAS). A Teletrol Envoy system was installed as part of the 2006

renovation and controls nearly all the air handlers, unit ventilators, baseboard radiators, exhaust fans, etc.

Another BAS, called Ubiquity, was installed between the time the mechanical maintenance contract

switched from Peirce-Phelps to Temperature Control Services (“TCS”). It was installed to replace what have

been reported as failed controllers. Ubiquity controls the central heating & cooling plant and a few

scattered pieces of equipment throughout the building. These controls systems do not appear to be

functioning uniformly and furthermore, scheduling and implementation of controls sequences is

questionable.

Reynolds recommends installing a new BAS that fully integrates nearly all components of the installed

HVAC systems and optimizes energy usage through commissioned controlled sequences (Schedule A of

the GESA will provide full details).

The following work is not included from the base project, but is rather presented below as Alternate scope

items for further consideration:

1. Installation of new controllers for existing variable air volume (VAV) boxes. Integration included.

2. Replacement of variable frequency drives (VFDs).

3. Replacement of the Gymnasium relief fans.

4. Replacement of the electric control panel serving the Gymnasium area exhaust and

heating/ventilating fans.

5. Integration of the photovoltaic data acquisition.

6. Air-side balancing.

7. Hydronic balancing.

8. Retro-commissioning.

Alternate #1 – Install Variable Air Volume (VAV) Controllers

The administration area has antiquated controllers for the VAV boxes that are currently serving those

spaces. The ability of the existing controls to adequately achieve temperature control as well as implement

energy strategies is questionable. Reynolds recommends replacing these controls to ensure energy and

indoor environmental quality (IEQ) optimization.

Alternate #2 – Solar PV Data Acquisition

There is a photovoltaic (PV) solar array installed on the roof of ‘C’ section of the building. The monitoring

system for this PV solar array is no longer supported.




Reynolds recommends providing a new monitoring system to be displayed on the existing dashboard

display in the main lobby. Campbell Scientific Solar 200 is recommended. This monitoring software system

will display real-time power production of the POV array and associated greenhouse gas emission

reductions. In addition, the array output will be integrated with the new BAS for monitoring and display

within the graphical user interface to be provided with the new BAS.

Alternate #3 – ES Gym Relief Fan Replacement and Electric control panel for Gym area fans.

Although the existing gymnasium relief fans are operational, these fans are old and antiquated. In

addition, there is an old an antiquated electric, relay-based control cabinet that controls numerous

exhaust/relief fans serving areas around the gymnasium (e.g. locker rooms, ticket booth etc.).

Reynolds recommends replacing the gymnasium relief fans and providing new digital controls to replace

the existing relay-based, electric controls serving exhaust/relief fans in the gymnasium area.

Alternate #4 – Hydronic Balancing

There is a relatively high confidence level that the air-side of the installed HVAC systems are balanced

(providing as designed air flow). This project includes verifying this confidence level by testing and

balancing the air side based on a 25% sampling of each category of installed HVAC unit.

Reynolds, however, does not have a high confidence level that the water side of the installed HVAC systems

have been balanced correctly. This low confidence stems from the fact that numerous balancing valves

installed in the heating hot water and chilled water piping are wide open. Based on experience, wide open

balancing valves, more often than not, indicate an incomplete water side balancing effort at a minimum

and more likely water side balancing that was never completed properly.

Reynolds recommends that water side (hydronic) balancing be completed. The primary reason for this

recommendation is that if water flow to the HVAC system units is not per each HVAC unit flow

requirements, the controls upgrades in the base project will not be able to guarantee any long term

savings potential.

Alternate #5 – Retro-commissioning

Our approach to retro-commissioning (RCx) focuses on working with the owner and the Stone House

Group to ensure the building is meeting the school district’s functional needs as efficiently as possible.

Reynolds retro-commissioning process looks at the elements of the installed HVAC systems that are not

directly related to this project. e.g., we look at issues like are the existing valves and dampers or the newly

planned to be installed valves and dampers actually capable of performing what the prescribed control

sequences are requiring. We also look at whether the HVAC unit coil and/or air fan configurations can

deliver the prescribed control sequences. We also look at whether the new sequences of operation we will

be implementing during both the heating and cooling seasons are actually working by systematically

monitoring real-time trend data and performing quarterly onsite review and implementing changes as

needed. This service is quite often over-looked as necessary, but it needs to be seriously considered.

Alternate #6 – Air Balancing

Since confidence levels are relatively high regarding HVAC units having at or near proper air flow levels, air

balancing is an alternate for consideration or a future standalone project.




Alternate #7 – Install Variable Frequency Drives (VFDs)

The air handlers serving the gym, cafeteria, library and theater area are currently operated as constant

volume units. However, occupancy and corresponding load is variable through the day. Reynolds

recommends installing VFDs on these fan motors and operating them to maintain temperature in the

spaces, with override for ventilation control and economizer operation.

Savings Summary

Implementation of this project is estimated to result in annual electricity, fossil fuel and maintenance

savings totaling $24,983.00. A breakdown of the savings is provided in the following table:

TABLE: Annual Energy and Cost Savings by Measure

The total amount of guaranteed savings can be found in Schedule C of the GESA (to be added).

Financial Summary

The following table shows the financial overview for the project in terms of estimated construction cost,

resource, and operational savings. Resource savings are the sum total of all savings associated with utilities

(e.g., electric, gas). Operational savings primarily include the maintenance costs avoided due to equipment

being replaced.

ELECTRIC FUELS O&M TOTAL

kWh kW $ ccf $ $ $

1 Building Automation System Improvements 176,705 - 12,193$ 9,699 6,790$ 6,000$ 24,983$

TOTAL 176,705 - 12,193$ 9,699 6,790$ 6,000$ 24,983$

EEM

Jenkintown School District

Energy Project Financial Overview

EEM # EEM Name

Jenkintown SD Building1 Building Automation System Improvements 303,972$ 18,983$ 6,000$

PROJECT TOTALS 303,972$ 18,983$ 6,000$

Alternate Scope Items

A1 Install VAV Controllers 51,630$ 569$ 660$

A2 Solar PV Data Acquisition 6,528$

A3 ES Gym Relief Fan Replacement 7,121$

A4 Hydronic Balancing 37,981$

A5 Retro-commissioning 29,673$

A6 Air Balancing 17,210$

A7 Install VFD's (5 @ 3HP & 4 @ 7.5 HP) 40,948$ 1,501$ 1,740$

Alternates Totals 191,092$ 2,070$ 2,400$

PROJECT TOTALS (w/ Alternates) 495,064$ 21,053$ 8,400$

NOTES: (1)

EEM

Construction

Cost

Annual

Resource

Savings

Annual

Operational

Savings (1)

Operational savings primarily include avoided costs of maintaining removed equipment.




Projected Cash Flow

A cash flow analysis is provided on the following page based on the current project costs and savings

estimates. The cash flow assumes a 20-year term.

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Documents

INVESTMENT GRADE AUDIT SUMMARY REPORT JENKINTOWN … · 2019. 6. 11. · distribution services for both natural gas and electricity. The electric commodity charges are provided through