Energy Management Opportunitieswith

Energy Efficient Lighting

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Your panelists

– Benefits, Technologies & Services: Mike Carter and Mark Farrell, Energy Engineers

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Electric Intensity (kWh/sqft)

Lighting

Cooling

Ventilation

Office Equipment

Miscellaneous

Heating

Cooking

Refrigeration

Water Heating

(4.89)30.4%

Lighting webinar benefits

– Bottom line cost savings today!– Comfortable speaking with customers– Knowledge of terms and pros/cons– Awareness of energy efficiency opportunities

Large Office Building

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– Energy Basics– Fundamentals of Light– Lighting Technologies– Lighting Controls– Lighting Maintenance– Business Solutions Toolkit– Incentives/Rebates

Contents

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– Power versus Energy Kilowatt (kW) is a measure of power, like

the speedometer of your car that records the rate at which miles are traveled.

• A bigger engine is required to travel at a faster rate.

Kilowatt-hour (kWh) is a measure of energy consumption, like the odometer on your car (miles).

Energy cost = power (kW) x time (hrs) x price = kWh x $/kWh

• A 113-watt four lamp light fixture costs about $66 annually when operating 16 hr/day (113 W x 5,840 hr x $0.10/kWh ÷ 1,000 W/kW).

Energy basics

Source: stock.xchng

Source: Commonwealth of Kentucky

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Energy basics

– Lights do not consume more energy when they are first turned on. Includes high-intensity discharge (HID) lighting.

– Pay the price for improved energy efficiency! The operating cost over the lifetime of a light fixture

can far exceed the original purchase price.

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Fundamentals of light

– Lumens—A measure of the perceived power of light. Constant output regardless of distance from source.

– Foot-candle—One lumen of light distributed over a square foot area. Depends on the distance from the light source. Does not hold for focused fixtures like flood lamps. Can be measured using light meter.

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Lighting comparison

– Lighting has many metrics. 60-watt incandescent ~ 850 lumens (100 CRI) ~ 14 lpw

efficacy 32-watt T8 fluorescent ~ 2,800 lumens (83 CRI) ~ 88 lpw 400-watt metal halide ~ 24,000 lumens (65 CRI) ~ 60 lpw 400-watt high-pressure sodium ~ 45,000 lumens (22 CRI) ~

112 lpw

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Incandescent / halogen

– 90% heat and 10% light (10 to 17 lumens per watt)

– Energy Independence and Security Act (EISA) of 2007 establishes higher minimum efficiency standards for incandescent reflector lamps (R lamps).

– Parabolic Aluminized Reflector (PAR#) lamps BR# (Bulged) and ER# (Ellipsoidal)

• # —the diameter of the widest part of the lamp in eighths of an inch (R20 = 20/8 = 2.5" diameter)

• EISA applies to > 2.25 " diameter

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Incandescent / halogen

– Flood lights Beam angle encompasses that part

of the beam that varies from peak |

brightness down to 50% of that intensity

as measured in a plane through the

nominal beam centerline.

– New halogen bulbs offer up to

30% energy savings, instant on,

no mercury, 100 CRI, and

compliance with EISA 2007. Philips Halogena® Energy Saver/Energy

Advantage (3,000 hrs)

Sylvania Halogen SuperSaver® (1,000 hrs)

GE Edison™ (2,500 hrs)

Source: Philips Lighting

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Fluorescent

– Historical timeline 1838—Michael Faraday’s glow tubes 1850s—Glass-blower Heinrich Geissler 1880s—Alexandre E. Becquerel coated tubes 1893—Nikola Tesla induction tubes 1896—Thomas Edison patented x-ray lamp 1890s—Daniel McFarlane Moore 1901—Peter Cooper Hewitt mercury vapor lamp 1927—Edmund Germer patent 1936—GE’s George E. Inman patent 1938—First commercial fluorescent tubes

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Fluorescent

– Nomenclature (FxxT#) F—fluorescent Fxx—wattage (rapid start) or

length (instant start) T- tubular; U—curved/bent Circline—circle T#—diameter in eighths of an inch Ballast Factor (BF)—ratio of output compared to reference ballast (not

energy efficiency measure)• Affects both watts and lumens• Ranges from 0.6 to 1.3

– Fluorescent light emission is a chain reaction.

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Fluorescent

– T8 Types (Generations)

Type Name Watts Lumens CRILife

(hrs, 000s)

1G 700 Series, Basic 32 W 2,800 75-78 15-20

2G 800 Series 32 W 2,850 -3,000 82-86 24-30

3G Super, HO 32 W 2,950 -3,200 82-86 24-30

4G

Reduced Wattage, Energy Savers

23 W25 W 28 W30 W

2,0002,4002,7502,850

82-86

Temp. sensitive,

Instant start only

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Fluorescent

– Super T8 lamps, with high-efficiency ballasts, are high-lumen (>3000 versus 2,850 standard) and extended life (>24,000 versus 20,000 hours standard) products.

Only saves energy when combined with a lower ballast factor ballast.

– T5 series (good for indirect lighting like suspended lighting).

TypeInitial

Lumens WattsBallast Factor

FixtureLumens

FixtureWatts LPW

T8 2,950 33 0.85 2,496 28 89

Super T8 3,200 34 0.78 2,496 26 96

Type InitialLumens

Watts LPW Life

T5 2,900 28 W 104 24,000 hours

T5HO 5,000 54 W 93 24,000 hours

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– T8 versus T5 T5s (smaller diameter

and shorter) not interchangeable with T8s.

Six F32T8s equivalent to four F54T5HO.

T5s have lower mercury content than T8s.

T5 lumen maintenance better at higher ambient temperatures but worse in cold.

• Holophane IntelliBay™ & IntelliVue™• Lithonia I-BEAM™ System

Fluorescent

Source: RPI Lighting Research Center

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Fluorescent

– Replace existing T12 fluorescent

lamps with T8 fluorescent lamps

(up to 30% savings).

– Start modes Programmed start (in series)

• Long preheat shuts down after start (up to 50,000 cycles).

• Can be wired in parallel

Rapid start (in series)• Simultaneous preheat stays on all the time (15,000 to 20,000 cycles).

• Identified by 2-wires from ballast to each end of lamp.

Instant start (in parallel)• No-preheat; high-voltage start (10,000 to 15,000 cycles).

• Identified by 1-wire from ballast to each end of lamp.

• Not good with occupancy sensors (<30 minute burn).

Four-lamp T12 versus T8 Fixtures

Lamp Type

Fixture Watts

Fixture Lumens

LPW

F32T12 148 9,120 62

F32T8 113 10,600 94

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Fluorescent

– Fluorescent ballasts Magnetic (60 Hz)

• Core and coil

Electronic (20 to 60 kHz)• 10% to 15% more efficient• NEMA Premium® Ballasts even better

All ballasts consume power even without lamps (2-lamp example).• Electronic consumes 6 to 12 watts loaded and 3 to 7 watts open circuit.• Magnetic consumes 18 to 20 watts loaded and 6 to 10 watts open circuit.

– Regulatory driver for electronic ballasts (T8 and T5 lamps)

No magnetic ballasts manufactured for replacement after June 2010.

2009 DOE Energy Regulations—Beginning July 14, 2012, these regulations effectively eliminate most 4-ft T12, 8-ft (F96) T12 lamps, and 700 series (1st generation) T8 lamps

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Fluorescent

– Metal Halide (MH) versus Fluorescent for High-bay

Probe start (PS) MH with low lumen maintenance (<65%) is best

target for replacement.

• EISA2007 imparts higher performance standards for PS MH.

• The lumen maintenance of metal halides can decrease

to 45% during its lifetime, whereas fluorescents maintain 90% to 95% in

optimal conditions.

Comparison

• One PS MH with 20,000 EOL lumens at 320 system watts

• Six F32T8 with 18,000 EOL lumens at 220 system watts

Remember—lumen output of fluorescents declines with

heat/cold.

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– Compact Fluorescent Lighting (CFL) You get the same or more light output (lumens) with a 75% energy

reduction and over six times the rated life!

Up to 9,000 lumen output at 120 watts

(PL-H high 4-pin)

Energy savings far outweigh difference in lamp price.

Power factor is typically 0.6, but power savings

far outweighs low power factor.

Issue of mercury content can be addressed.

Use reflector flood CFLs (R-CFLs) in recessed

can lights.

Consider aluminum reflector CFL PAR lamps.

Globes

Candelabra

Fluorescent

Source: NREL

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Fluorescent

– Compact Fluorescent Lighting (CFL) Twister

Single, double (T), triple (TR), quadruple (Q) twin-tube (turns)

Integral ballast screw-in

Modular external ballast pin-based

• Gxx where xx is pin center-to-center dimension (G23 has 23mm dimension)

» G23q where “q” means quad-pin base

» G23d-x where “d-x” means the number of tubes (turns)

• 2-pin with integral starter requires magnetic preheat ballast

• 4-pin (quad) with external starter usually electronic ballast

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Fluorescent

– Induction (electrodeless) lighting High-frequency magnetron microwave power generator,

magnetic field coupling device (antenna), and phosphor coated tube.

Up to 100,000 hour rated lamp life• Lumen maintenance 70% at 60,000 hours• Efficacy of 70 to 75 lumens per watt

Best applications have high labor cost.• Parking garages• Cold-storage rooms• Inaccessible roadway tunnels and underpasses• Illumination of roadway signs and inaccessible

advertisement boards• Lighting over stairs or escalator wells• Open mall atriums or ceilings in "big box" retail areas• Pole-mounted luminaires for dusk-to-dawn illumination on a campus• Industry, petrochemical, and offshore applications

Source: Osram Endura/Sylvania IcetronTM Electrodeless Lamp

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High Intensity Discharge

– Low Pressure Sodium Most energy efficient lighting source Not an arc source, so no glare 0 to 20 CRI

– High Pressure Sodium Arc source with (20 to 65 CRI) 310 W and 360 W replacements exist

for 400 W Electronic ballasts 5 to 20 W versus

50 to 70 W magnetic

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High Intensity Discharge

– Metal Halide Arc source with 60 to 95 CRI Quartz or ceramic transparent tubes

• Ceramic (polycrystalline alumina—PCA) offers better lumen maintenance, color rendering (95 versus 65 CRI), and color stability.

• Can operate on HPS ballasts (direct lamp replacement).

– Smaller Size <150W HID Ballasts Generally 50% smaller in size (3" x 1.3" x 1.1") and lighter weight

than standard magnetic ballasts Self-ballasted PAR30LN and

PAR38 (1,200 initial lumens) CMH lampsreplace 74W and 120W halogen bulbs

Source: Osram-Sylvania

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High Intensity Discharge

– Sustained arc vs. fluorescent phosphor emission

– Strike time (minutes)

Type Watts LumensLumen

Maintenance LPW CRILife(hrs)

Mercury Vapor* 1,000 W 47,500 65% 30 40 24,000

Low Pressure Sodium

135 W 22,000 >95% 150 10 18,000

High Pressure Sodium

400 W 45,000 75% 85 30 24,000+

Metal Halide** 452 W 40,000 70% 65 65 20,000

MV LPS HPS MH Probe MH Pulse

Warm up 4-7 7-15 1-4 2-15 1-4

Restrike 3-6 1 0.5-1 5-20 2-8

*Ballasts banned by EPAct2005 **Position dependent

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– Radio Frequency Lighting Luxim LiFi™ or Light Emitting Plasma™ (LEP)

• An ac/dc converter generates an RF signal that is transmitted by a special cable to a quartz lamp embedded in a dielectric material.

• Pemco Lighting Products STA-41-01 luminaire

» 273 system watts» 23,000 initial lumens» 5,500K CCT/80 CRI» 50,000 hour rated life» Dimmable to 20%

High Intensity Discharge

Source: Luxim

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Solid state lighting

– Light Emitting Diodes (LEDs) Electrical current driver circuit instead of ballast. Relatively low lumens per watt (30 to 35 lpw) historically,

but now 45 to 60 lpw. Long life; years, not hours.

• 70% lumen maintenance at 50,000 hours of operation. Frequent switching does not affect rated life for LEDs

as it does for fluorescents. Directional nature of LED results in

very high luminaire efficacy. Very compact and low-profile. Nothing to “break.” No abrupt failure mode.

Source: NIST

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Solid state lighting

– Light Emitting Diodes (LEDs) Instant on (no warm-up time required). Does generate harmonics, but no reported problems. Some built-in surge and noise protection. Expensive initial cost. Heat sensitive. Exit Signs

• Annual operating costs of $5 compared to $30 to $40 for incandescent or fluorescent.

Compatible with battery backup (traffic lights).

Source: stock.xchng

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Lighting controls

– Daylighting Skylights/lightpipes, clerestory windows, or roof

monitors.

Energy savings can range from about $0.25/ft2 to

$0.50/ft2, depending on the building type, location,

office area plan, and local cost of energy.

Photosensor layout is important.

Occupancy sensors◦ Ultrasonic has wider range than infrared but

is prone to false positives.

◦ Can shorten life of fluorescents with instant

start ballast.

◦ $30 to $150 cost.

◦ 2-year payback is normal.

Source: LightLouver LLC

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Lighting controls

– Dimming A solid-state dimmer works by using

silicon-controlled rectifiers (SCRs). Radio frequency interference (RFI)

can be a problem. Greatly increases bulb life for

incandescent/halogens. Requires special dimming ballast for fluorescents.

• 3-wire, 2-wire, or 4-wire.• Energy savings fairly linear with fluorescents.• Continuous or bi-level dimming

HID lighting limited to 50% to 60% dimming.• Two-level for magnetic ballasts (non-linear energy savings).• Continuous for electronic ballasts (energy savings linear).• Lamp life degrades if dimming to less than 60% level.

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Lighting controls

– Digital Addressable Lighting Interface (DALI) A royalty-free, non-proprietary, two-way, open and interoperable

digital protocol.

The Gateway broadcasts commands to all digital ballasts across the

signal cabling that

connects the ballasts

in parallel.

A ballast only responds

when the message

contains its specific

address.

Sixteen programmable

scenarios and groups

stored in the ballast.

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Lighting controls

– Wireless Mesh Networks Redundant

• Joining• Healing

Spatial diversity• Different routes

Temporal diversity• Try again later

Source: Dust Networks

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Lighting maintenance

– Nine components of a good lighting maintenance program*: Group relamping Know your equipment Focusing and adjustment Verify lamp types and wattage Verify color temperature Confirm that everything is in working order Watch for compatibility issues Get rid of dirt Do not forget exterior lighting*"Everything You Need to Know About Maintaining Your Lighting System," by Jean Sundin, founder of Office for Visual Interaction, Inc.

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Lighting maintenance

– Group relamping recommended at 60% to 80% of rated life. Every 2 to 3 years for 20,000 hour fluorescents.

Can be 30% to 40% cheaper to group relamp due to labor savings.

Easier to schedule and outsource than spot relamping.

Reduces improper mixing of different types of lamps.

Normally done outside working hours.

– Lighting failure modes Heat

Voltage transients

Vibration

Bad electrical connection

Improper cycling

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The Business Solutions Toolkit

– Reduce energy expenditures with free, online tools Energy benchmark data by business segment Efficiency recommendations by business segment Lighting, motor and other energy calculators Facility energy assessment… plus more

– Get energy answers with live Web resources “Ask an Expert” service supplies direct answers to energy questions Searchable Energy Library and News resources Monthly electronic newsletter delivered to your e-mailbox

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How to access the Toolkit

– Links found on the Pacific Power website Can access direct at pacificpower.net/toolkit

– Register to use the Toolkit and you will receive our monthly e-mail newsletter

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What is in the Toolkit

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Online business tools pacificpower.net/toolkit

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Pacific Power FinAnswer Express

– FinAnswer Express is for commercial and industrial customers– either retrofit or new construction

– Pre-calculated incentives for high-efficiency lighting and HVAC equipment

Custom incentives may be available for other types of equipment

– Incentive process (pre-purchase agreement or post purchase application) varies by technology and project type

Please understand the process before you purchase!

– Check our website for on-line forms plus trade allies available to help

– Also check for state and federal tax incentives at dsireusa.org

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Pacific Power Energy FinAnswer

– Applies to comprehensive commercial or industrial projects– either new construction or commercial retrofit* Lighting and non-lighting projects can be packaged

– Starts with an energy analysis to identify options and highest priority measures Commissioning is required for most measures

– Incentives are project-based Payable by one-time lump sum check, per project

– Incentive agreement must be signed before equipment is purchased

– Check our website for participation steps and online forms

*Commercial retrofit projects must be at least 20,000 sq. ft. to be eligible

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Contacts

– For more information please phone us: Call your Business Solutions Team for answers to service and account

questions at 1-866-870-3419– Visit our website at:

Business program Web page –

pacificpower.net/business Business Solutions Toolkit –

pacificpower.net/toolkit– Or contact us directly:

E-mail us at energy.expert@pacificorp.com Use our online inquiry form – pacificpower.net/inquiry Call our business Energy Services Hotline at 1-800-222-4335

– Also visit the Energy Trust of Oregon website at energytrust.org

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