LIGHTING SYSTEMS
Program Description: The Vectren Commercial New Construction (CNC) program offers financial
incentives for projects that are designed to improve upon minimum lighting installation requirements set
forth in the 2010 Indiana Energy Code. The lighting equipment program provides ultimate flexibility by
allowing the building design professionals to select almost any possible lighting technology provided
where the total sum of consumed watts is less than prescribed by the energy code.
Best Practices: A lighting system designed to improve on Indiana Energy Code requirements can be
one of the best investments a new building stakeholder can make. Investments in energy efficiency for
lighting systems can often have a payback period less than 2 to 3 years with very limited initial cost
impacts. Please consult with local design professionals for exact design practices. Below are a few
suggestions on how your lighting system can improve upon code requirements:

Utilize high efficiency light sources, such as:
a. High performance fluorescent T8 lamps (25 and 28 Watts)
b. Pulse start metal halide lamps
c. Light Emitting Diode (LED) sources
d. Fluorescent lamps with ballast factors greater than 1.0

Install automatic lighting controls. These devices include occupancy sensors and daylighting
sensors; occupancy sensors turn off lights when a room or space are unoccupied and daylight
sensors turn off or dim lights when sufficient daylight is available to illuminate the space. The use
of lighting controls in a building will reduce the lighting operation hours and cooling loads.

Consider lamp life when selecting fixtures. Some lighting sources, such as high performance
fluorescent T8 lamps and pulse start metal lamps, can have a lamp life 50% longer than
equivalent standard sources.

Evaluate fixture efficiency in addition to lamp
efficiency. Selecting lighting fixtures with high
reflectance materials and quality optical systems
can often result in fewer lighting fixtures and lower
the initial first cost impacts of these quality
products.

Locate lighting fixtures where lighting is needed.
Overlighting transition or non-function spaces can
lead to a non-efficient lighting system.

Include benefits from natural daylight through
fenestration and other architectural elements.
Depending on space configuration and occupant
activities, these benefits can reduce initial lighting
system costs and provide better occupant ambiance.

Figure 1: Daylighting configuration
Source: International Energy
Conservation Code, 2006
Select interior architectural finishes with high reflectance
characteristics. Interior light generated from electric and natural sources will “bounce” within the
interior space and allow spaces to feel brighter while utilizing fewer electric lighting sources.
Further Sources:
Consult the following websites and resources for more specific information on lighting system
improvements:
Illuminating Engineering Society (IES):
Illuminating Engineering Society (IES) Handbook:
Advanced Energy Design Guidebook (AEDG):
DOE Commercial Lighting Solutions:
CEE Commercial Lighting:
Advanced Lighting Guidelines:
www.iesna.org/
www.iesna.org/store/handbook.cfm
www.ies.org/store/AEDG.cfm
www.lightingsolutions.energy.gov
www.cee1.org/com/com-lt/com-lt-main.php3
www.advancedbuildings.net/toolsguidance/advanced-lighting-guidelines
Lighting Efficiency Improvements
Measure Description: Lighting systems that improve upon the minimum power density allowances set
forth by the 2010 Indiana Energy Code are eligible for incentive. Lighting improvements are one of the
fastest and most cost effective ways to save energy in a building. Under this program, the lighting
designer or electrical engineer are allowed great flexibility in their design, as the incentive is based on the
reduction of the lighting system power density as compared to the code baseline.
Applicability: Rebates are available for lighting equipment installed as part of a new construction
project.
Equipment Eligibility: Lighting equipment that results in a verifiable installed demand reduction is
eligible for a rebate
Lighting New Construction:


T8 or T5 fluorescent lamps must be rated at 80 CRI or higher and 90 lumens or higher per watt,
with ballasts having a power factor of at least 0.9 and a total harmonic distortion of less than 20
percent.
The lighting project must produce a 5 percent installed demand reduction from ASHRAE 90.12007 lighting power density specifications by building type as described in Table L-1.
Ineligible Measures:

Installation of T12 fluorescent lighting technology

Efficiency improvements from screw-in incandescent and compact fluorescent lamps.

Standard metal halide or any high pressure sodium lighting fixture
Calculation Tools:
Download and use Vectren’s CNC Lighting Workbook. Follow the instructions provided on the workbook
and determine how much energy the lighting system will use, the impact of lighting control usage in the
building, and the estimated rebate and payback period for the project.
Instructions for Rebate Application:
1. Submit the optional Rebate Reservation (RR). Submitting an RR is recommended for
prescriptive rebate projects to ensure funding will be available upon project completion.
2. Submit the Rebate Application (RA) after the equipment has been installed.
3. Fill in the Lighting Efficiency Improvements Table after the lighting is installed or use the CNC
Lighting Workbook to complete your application. It can be downloaded from the Vectren website
(www.Vectren.com) or obtained by contacting the cnc@vectren.com. Follow the instructions
accompanying the spreadsheet to determine the demand reduction and rebate amount expected
from your lighting project.
Items to submit with Rebate Application:
1. Lighting Workbook (optional)
2. Dated sales receipt/invoice including material and labor
3. Evidence of facility square footage
Measure Rebate: Rebates for lighting equipment are paid at $0.35 per Watt of reduced demand. The
baseline lighting power densities for new construction lighting projects are shown in Table 1.
Table 1: Baseline Lighting Power Densities for New Construction Measures
2
Building Area Type
W/ft
Building Area Type
W/ft
Automotive Facility
0.9
Multi-Family
0.7
Convention Center
1.2
Museum
1.1
Court House
1.2
Office
1.0
Dining: Bar Lounge/Leisure
1.3
Parking Garage
0.3
Dining: Cafeteria/Fast Food
1.4
Penitentiary
1.0
Dining: Family
1.6
Performing Arts Theater
1.6
Dormitory
1.0
Police/Fire Station
1.0
Exercise Center
1.0
Post Office
1.1
Gymnasium
1.1
Religious Building
1.3
Healthcare-Clinic
1.0
Retail
1.5
Hospital
1.2
School/University
1.2
Hotel
1.0
Sports Arena
1.1
Library
1.3
Town Hall
1.1
Manufacturing Facility
1.3
Transportation
1.0
Motel
1.0
Warehouse
0.8
Motion Picture Theater
1.2
Workshop
1.4
2
Lighting Control Equipment
Measure Description: For this program, lighting controls are defined as devices that dim or turn off lights
when the space is not in use or when daylight provides adequate illumination for the space. Incentives
are available for switch and ceiling mounted occupancy sensors, and for daylight sensors. Occupancy
sensors turn off lights when the controlled space is unoccupied. Daylight sensors dim or turn off lights
when natural daylight provides enough illumination to meet the space requirements. Please note that
dual-purpose sensors which control equipment in addition to lighting are not included in the prescriptive
program and should be submitted as a custom project using the Rebate Reservation (RR).
Applicability: Rebates are available for lighting equipment installed as part of a new construction
project.
Equipment Eligibility: Equipment must be purchased and installed, and meet all other program terms
and conditions.
Instructions for Rebate Application:
1. Submit the optional rebate reservation with most accurate version of completed lighting workbook
as possible. Submitting a rebate reservation is recommended for prescriptive rebate projects to
ensure funding will be available upon project completion.
2. Submit the Rebate Application (RA) after controls are installed.
3. Fill in the Lighting Control Equipment Table with all appropriate fields completed. Enter the
quantity of each sensor type being installed, and multiply that quantity by the unit rebate amount
to find the measure rebate amount.
Items to submit with Rebate Application:
1. Dated sales receipt/invoice including material and labor
2. Evidence of facility square footage
Measure Rebate: Rebates for lighting controls are shown in Table 2:
Table 2: Lighting Control Equipment
Measure Description
Unit
Rebate
Area Day Lighting Controls
Sensor
$45/sensor
Building Occupancy Lighting Controls
Connected load per sensor must exceed 500W
Sensor
$50/sensor
OTHER LIGHTING APPLICATIONS
Measure Description: The Vectren Commercial New Construction (CNC) program offers rebates for
other efficient lighting systems, including exterior lighting, designed to improve on Indiana Energy Code.
Eligibility requirements are described below.
Applicability: Rebates are available for systems installed as part of a new construction project that save
energy when compared to Indiana Energy Code requirements.
Equipment Eligibility: Equipment will be eligible for rebates if it exceeds all of the efficiency ratings
required by ASHRAE standard 90.1 – 2007. For specific eligibility requirements consult the ASHRAE
Standard section corresponding to your application or contact the program at cnc@vectren.com.
Equipment that is rebated through Energizing Indiana is not eligible for rebates through this program.
Supporting documentation must be included with the application to receive rebate.
Instructions for Rebate Application:
1. Submit the Rebate Reservation (RR). Submitting an RR is required for custom projects.
2. Submit the Rebate Application (RA) after equipment is installed.
3. Fill in the Custom Rebate Worksheet with complete description of the lighting upgrade. Please
provide as an attachment of all assumptions and formulas used to calculate the cost, estimated
energy savings, and electrical demand savings. Please also provide descriptions of all variables
used in these formulas. Supporting documentation must be provided showing how savings were
calculated. Supporting documentation should include but not be limited to the following:

Spreadsheet with engineering calculations

Equipment specification sheets

Proof of building size and operation hours
Items to submit with Rebate Application:
1. Dated sales receipt/invoice
2. Manufacturer’s specification sheets documenting fixture wattage and testing. LED fixtures must
be tested to IESNA standards LM 79 and LM 80.
Measure Rebate: Exterior lighting systems are considered custom projects. Completion of the Rebate
Reservation Request is MANDATORY for custom rebates. Incentive levels calculated based on first year
energy savings; Projects earn $0.12/kWh for projects subject to the following conditions:





Incentives provided for measures that provide incremental energy savings as compared to
the requirements of the 2010 Indiana Energy Code.
Incentive may not exceed 50% of the total project cost;
Incentive does not apply to projects with simple payback less than 1.5 years; Incentive
cannot buy down project below 1.5 years payback.
Incentive is limited to a maximum of $100,000 per customer per calendar year;
Project preapproval subject to cost-effectiveness analysis as determined by Vectren Energy
Delivery.
Bibliography:
Frankel, Mark. Core Performance Guide: a Prescriptive Program to Achieve Significant, Predictable
Energy Savings in New Commercial Buildings. White Salmon, WA: New Buildings Institute, 2007.
Print.
2009 International Energy Conservation Code and ANSI/ASHRAE/IESNA Standard 90.1-2007 Energy
Standard for Buildings except Low-rise Residential Buildings. Washington, D.C.: International
Code Council, 2009. Print.
International Energy Conservation Code, 2006. Country Club Hills, IL: International Code Council, 2006.
Print.