LED Lighting & Network Lighting Controls Upgrade “Smart Lighting Controls – Cheshire School District Case Study”

Who We Are • Cheshire Public Schools

• Vincent Masciana – Director of Management Services

• Dan Marseglia – Manager of Building and Grounds

• Terry Snell – Building Maintainer Specialist

• Enlighted, Inc. • Michael Amato, CEM – Director of Sales Engineering and Utility Programs

• Mustone LED Illumination • John Mustone – Proprietor

Cheshire Public Schools • School District Overview

• 8 School Buildings built between 1912 and 1971 (+/-750,000 sq ft)

• Approximately 300 learning spaces (Classrooms, Labs, Libraries, etc.)

• Public Schools – typically not on the cutting-edge, especially if it costs $$$

• Brief History of Lighting Initiatives

• Upgraded Fluorescent Bulbs and Ballast in 2005

• 2011 - First LED Lighting Project – High School Auditorium

Cheshire High School Auditorium Project Summary:

60 incandescent fixtures using 250 watt bulbs each were replaced with 91 LED fixtures drawing just 14 watts each, a wattage reduction of 92% from 15,000 watts down to 1,274 watts with better much better overall lighting for the space!

The estimated energy savings for this project assuming 3,000 hours of use per year at $.16/kWh is $6,589 which represents a decrease from $7,200 per year down to just $612!

Cheshire Public Schools • School District Overview

• 8 School Buildings built between 1912 and 1971 (+/-750,000 sq ft)

• Approximately 300 learning spaces (Classrooms, Labs, Libraries, etc.)

• Public Schools – typically not on the cutting-edge, especially if it costs $$$

• Brief History of Lighting Initiatives

• Upgraded Fluorescent Bulbs and Ballast in 2005

• 2011 - First LED Lighting Project – High School Auditorium

• 2012 - High School Solar Energy Classroom – LED Lighting

• 2012 – Redwood Computer Controlled LEDs – Elementary 1st Grade Wing

Cheshire Public Schools • School District Overview

• 8 School Buildings built between 1912 and 1971 (+/-750,000 sq ft)

• Approximately 300 learning spaces (Classrooms, Labs, Libraries, etc.)

• Public Schools – typically not on the cutting-edge, especially if it costs $$$

• Brief History of Lighting Initiatives

• Upgraded Fluorescent Bulbs and Ballast in 2005

• 2011 - First LED Lighting Project – High School Auditorium

• 2012 - High School Solar Energy Classroom – LED Lighting

• 2012 – Redwood Computer Controlled LEDs – Elementary 1st Grade Wing

• 2013 – Enlighted Computer Controlled LEDs – Cheshire High School Library

• Projects possible due to energy savings, in-house labor, CL&P/Eversource incentives

• These initial projects turned out to be “proof-of concept”

Energy Performance Contract • 2010 – Town-wide Energy Performance Contract initiative begins

• 2011 – Ameresco selected, proposers included Con-Ed & Schneider Electric

• 2014 - Investment Grade Audit completed, 164 of 296 ECMs selected

Proposed Performance Contract Financials

Financing Term (after construction) 16 years

Estimated Tax-exempt Interest Rate 3.75%

Capital Cost $10,176,548

Estimated Rebates $1,203,682

Capital Contribution $0

Net Assumed Capital Cost $8,972,866

Guaranteed Cost Savings / Year 1 $663,269

Assumed Utility Escalation Rate 3.00%

Net Excess Cumulative Cash Flow $5,289

Energy Performance Contract • 2010 – Town-wide Energy Performance Contract initiative begins

• 2011 – Ameresco selected, proposers included Con-Ed & Schneider Electric

• 2014 - Investment Grade Audit completed, 164 of 296 ECMs selected

• The Great Lighting Debate of 2014 • Recommended Classroom Lighting ECM was Fluorescent Swap

• $522,195 Investment expected to result in annual energy savings of $56,114/year

• Based on prior experience school’s “suggested” LEDs were a better option • $3,149,875 investment expected to result in annual savings of $115,347/year…or more

• Ameresco’s team – had reservations about the schools expected energy savings from the Computer Controlled LED System installed in the high school library

• School’s team was skeptical abnout Ameresco’s assumption of fluorescents lasting 20,000 hours in the real world

• So Who won the Debate and Why???

Selected Energy Conservation Measures ECM Name Savings Simple Payback (years)Lighting System Improvements $79,474 6.24

Classroom Lighting - LED Option $115,347 24.33

Lighting Controls $243 9.74

Recommission and Upgrade

Controls $280,655 3.48

Building Weatherization $26,921 10.85

Electric Heat Conversion $39,663 75.7

Chiller Replacement $8,330 44.71

Oil to Gas Conversion $2,029 2.92

High Efficiency Boilers $11,476 24.77

Domestic Water Heating

Improvements $747 16.08

Replace Classroom TVs with

Atomic Clocks $21,667 1.36

Vending Machine Controls $3,362 1.77

Replace Refrigerators $1,424 5.62

Premium Efficiency Motors $849 9.96

Fan VFDs $4,909 15.28

Pump Improvement Measures $7,456 4.49

Kitchen Appliance Replacements $3,731 17.87

Premium Efficiency Transformers $5,834 14.59

Building Insulation $686 29.82

Piping Insulation $12,979 10.25

Water Conservation $16,168 12.93

GRAND TOTAL Guaranteed Year 1 Savings -

$663,269

Project Simple Payback –

13.86 yrs

Why Computer Controlled LEDs Works for Us • Annual Energy Savings of 80%+

• Base savings come from lower power consumption of LEDs

• Controls enhance savings by allowing for: • Across the board and selective dimming (extends 50,000 hour LED life further)

• “My new lights are too bright”

• Daylight harvesting (classrooms have lots of windows for natural light)

• Motion detection

• Scheduling capabilities

• Improved lighting with less outages…and a happier staff

• Maintenance Savings on Bulb & Ballast Replacement & Disposal Costs

• Employee Safety Improvements (reduces Worker’s Comp Claims)

Ladder Safety - Do’s and Don’t’s

Why Computer Controlled LEDs Works for Us • Annual Energy Savings of 80%+

• Base savings come from lower power consumption of LEDs

• Controls enhance savings by allowing for: • Across the board and selective dimming (extends 50,000 hour LED life further)

• “My new lights are too bright”

• Daylight harvesting (classrooms have lots of windows for natural light)

• Motion detection

• Scheduling capabilities

• Improved lighting…and customer service

• Maintenance Savings on Bulb & Ballast Replacement & Disposal Costs

• Employee Safety Improvements (reduces Worker’s Comp Claims)

• Maintenance staff empowerment and job enrichment

Screen Shot of CPS Lighting Controls Interface

Why Computer Controlled LEDs Works for Us • Annual Energy Savings of 80%+

• Base savings come from lower power consumption of LEDs • Controls enhance savings by allowing for:

• Across the board and selective dimming (extends 50,000 hour LED life further) • “My new lights are too bright”

• Daylight harvesting (classrooms have lots of windows for natural light) • Motion detection • Scheduling capabilities

• Improved lighting…and customer service

• Maintenance Savings on Bulb & Ballast Replacement & Disposal Costs

• Employee Safety Improvements (reduces Worker’s Comp Claims) • Cheshire High School Auditorium and Ladder Safety

• Maintenance staff empowerment and job enrichment

Bottom line – Computer-controlled LED solution simply made good sense

Evolution of Lighting Management

1st Generation Building=Zone

3rd Generation Sensor=Zone

2nd Generation Circuit=Zone

4th Generation Fixture=Zone

Other Retrofit Options

• Lights Controlled via Harness (Addressable) • Dimmable (Task but No Occupancy Tuning) • No User Preferences • *(Energy Savings 50-75%)

Standard Fixture Lighting with Digitally Addressable Harness (DAH)

Standard Fixture Lighting with DAH and Point to Point Control

• Lights Controlled via Harness (Addressable) • Typical Office and Meeting Room Controls • Localized Dimming (Occupancy Based) • *(Energy Savings 60-75%)

• Lights Controlled via Harness (Addressable) • Full Dimming Capability • Occupancy, Task, Daylight Harvesting • *(Energy Savings 50-90%)

Standard Fixture Lighting with Wired Sensor Control

*Presumption: LED Based Retrofit

Fine-Tuning = Maximum Savings Wireless Individually Addressable Fixture Lighting

AC LINE

MAXIMIZE ENERGY SAVINGS • Each Light Fixture Independently Controlled • Distributed Intelligence • Dimming 0% to 100% • Task Tuning • Daylight Harvesting • Metered Energy Consumption

= Maximum Energy Savings

Occupancy Control (Local and/or Remote)

Cloud (Remote)

Gateway

Energy Manager

SMART Sensor SMART Sensors = Data Driven/Future-Proof Buildings

Comfort & Convenience

• Smart Occupancy Detection

• Stability controlled daylight harvesting

• Time-of-Day dimming schedule

• Dim-and-Linger occupancy control

• Follow-me lighting effect

• Personalized settings / control

• Motion group sensors

• Space & Personnel Change Extensible

Microprocessor in each SMART Sensor delivers data visibility - 100 sq. ft.

Energy Savings • Task Tuning / High-end Trimming • Daylight Harvesting • Occupancy / Vacancy Detection • Automatic Demand Response /

Manual DR • Manual Override Controller • Occupancy Controlled Receptacles • BMS / BAS Integration • Energy Savings Report

Maintenance Benefits • Fixture Outage Reports • Longer Life of LEDs

• Save Money! Deferred Lighting Repairs/Replacements

• Safety! Less Ladder Time for Maintenance Staff

Technology Solution – How It Works? Simple, Advanced Energy Management

The Smart Sensor System is the simplest and most advanced way of managing a building’s physical environment. Together, Smart Sensors, Room Control, the Gateway, and the Energy Manager automate, analyze, control, and report environmental data to drive efficiency.

Smart Sensors: • Installed on a 1:1 Basis Per Fixture • 10’ x 10’ Area Coverage (Knowledge Worker) • Responds to Light, Motion and Heat • Collects Data and Sends Wirelessly to Gateway

Gateways • Conduit Between Smart Sensors and Energy Manager (EM) • Wirelessly gathers data from sensor back to EM • Sends Updates and Commands to Individual Sensors

Energy Manager • Stores Data & Performs Analytic Functions • Visual Reporting via Browser-Based Dashboard • Can Extend to 3rd Party Systems • Administration of Profiles & Settings

Data Solution • Web Based Dashboard Refreshed with Occupancy &

Energy Consumption Information • Samples Information Every 5 Seconds • Historical Data Per-Fixture

Tasking Tuning: 20 - 40% savings

Occupancy Sensing: 30 - 60% savings

Daylight Harvesting: 3 - 10% savings

Manual Override: Scene selection

Demand Response: DR and ADR functions

Controls Interface Profiles Make Difficult Control Strategies Easy to Implement

User Interface Sensors Mapped to Floor Plan Creates a Simple User Interface

• User Friendly, means that people will use it

• Meaningful Data, empowers the facility staff creating system operators out of each member of your crew

Dense Data, Infinite Applications Limitless Applications Beyond Lighting Possible

• Richest, Best Data-Set, Ever Collected

• Enables deeply Granular Decision Making

• It all Begins with Lighting (the 1st App.)

Extensible – HVAC Advisor Application HVAC Applications

Fault Detection - Temperature heat maps of hot and cold spots can detect simultaneous heating and cooling of the building and insulation leaks

5:00pm 6:20pm- Overlay 6:00pm- cold spots 6:20pm- hot spots

Demand Based Occupancy Controls – integrating sensor’s real time occupancy information with the buildings BMS to actively adjust set back zones

Benefits to Facility Manager: Helps save >25% building HVAC energy cost by utilizing current and historical occupancy data

Extensible – Space Utilization Suite Real Estate Applications

Benefits to Real Estate Team: • Help Better Understand Space Utilization by Zone

Over Time • How People Move About the Space • Actionable:

• Space Design Change to Increase Productivity • Need for Additional Zone of Specific Type • Need for Creating Common/Emergency Facilities

in Motion Path

Energy Savings – Fluorescent Baseline LED + Network Lighting Controls Creates Maximum Savings Potential

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Baseline Report

Baseline

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Energy Savings – LED LED + Network Lighting Controls Creates Maximum Savings Potential

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Energy Savings Report

Baseline LED Savings

53.5% Savings

Consumption

Energy Savings – LED + Controls LED + Network Lighting Controls Creates Maximum Savings Potential

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Energy Savings Report

Baseline Task Tuning Savings LED Savings

69.5% Savings

Consumption

Energy Savings – LED + Controls LED + Network Lighting Controls Creates Maximum Savings Potential

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Energy Savings Report

Baseline Ambient Savings Task Tuning Savings LED Savings

70.6% Savings

Consumption

Energy Savings – LED + Controls LED + Network Lighting Controls Creates Maximum Savings Potential

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Energy Savings Report

Baseline Occupancy Savings Ambient Savings Task Tuning Savings LED Savings

82.3% Savings

Network Lighting Controls Put the Light Where You Need It, When You Need It!

Consumption

Savings Analysis Based on Measured Data from the Cheshire School District Energy Managers

Previous Total Fluor. System 386.9 kW 0.56 W/sq.ft. Current Total LED System 175.0kW 0.25 W/sq.ft.

Number of Schools 6 Square Footage 689,000 One School Omitted from Data Set

Measured Data for Typical Week of Lighting Energy All Values in kWh Baseline Consumed LED Savings Controls Savings Total Savings % Savings Sunday 172.1 73.0 59.3 39.8 99.1 57.6% Monday 3712.2 669.2 1994.0 1049.1 3043.0 82.0% Tuesday 4242.1 751.5 2285.4 1205.1 3490.5 82.3% Wednesday 4251.5 736.2 2288.7 1226.6 3515.3 82.7% Thursday 4218.5 725.5 2267.9 1225.1 3493.0 82.8% Friday 4605.4 782.8 2479.4 1343.2 3822.6 83.0% Saturday 502.8 105.5 230.5 166.8 397.3 79.0% Weekly TOTAL 21,704.6 3,843.7 11,605.1 6,255.8 17,860.9 82.3% School Year TOTAL 759,661.4 134,531.1 406,177.6 218,952.7 625,130.3

School Year Extrapolated at Net 35 Weeks 17.7% 53.5% 28.8% 82.3%

Baseline After LED 353,483.8

Controls Savings 218,952.7 61.9%

Scalable Values, kWh/sq.ft. Baseline Consumed LED Savings Controls Savings Total Savings School Year TOTAL 1.10 0.20 0.59 0.32 0.91 52 Week Year TOTAL 1.64 0.29 0.88 0.47 1.35

Estimated Project Economics Material, Labor, Incentives, Savings

Material and Labor • $3,006,451 cost for lighting upgrades included in Energy Performance Contract • Material Costs have dropped 30% since then

Eversource Incentive • $291,232 from Eversource for lighting upgrades (of the $1,251,851 total paid for the overall EPC)

Savings on 625,130 kWh @ $0.18 per kWh • $112,523 per 35 week school year

• $39,412 is from Controls

Simple Payback – Energy Savings plus Incentive Only • Approximately 24.1 Years

Eversource has independently evaluated the energy savings and estimates the savings to be approximately 50% greater than the conservative evaluation presented here today when taking into account additional off-hours and non-academic calendar savings.

Michael Amato, CEM – Director, Sales Engineering & Utility Programs 347-762-6286 michael.amato@enlightedinc.com www.enlightedinc.com

Contact Information

Vincent Masciana – Director of Management Services vmasciana@cheshire.k12.ct.us Dan Marseglia – Manager of Building and Grounds dmarseglia@cheshire.k12.ct.us