Presented by:

Todd MaerowitzDirector of International Sales

Solutions for Egypt

Agenda

• Technology Overview

• Economic and Environmental Example

• Human Performance Improvement

• Solatube Products

Daylighting Options

Traditional Skylights

Benefits: Not dependent on

building orientation Daylight deeper into

building

Challenges: Up to 10% of roof

area Can be expensive Transient light

patterns Volatile light levels Lack of control Top floor limited Complex architectural

integration Historical problems

with leaks Punishing thermal

performance

Windows

Benefits:

View of the world

Design feature

Challenges:

Orientation dependent

Perimeter limitation

Punishing thermal

Performance

Glare

Easily obstructed

Sound control

Transient light patterns

Volatile light levels

Optical TDDs

Benefits:

Highly consistent and

controllable daylight

Daylight any space in

nearly any climate

Minimal roof structure

impact (<2%)

Superior thermal

performance

Endless possibilities

with highly flexible,

modular system

Leak-proof design

Cost-effective

Challenges:

Only your imagination…

Solatube Technology

Capture

Transfer

Deliver+Control

Capture

Raybender and LightTracker Technologies• Passive optics• Maximizes light capture• Improves low angle light collection• Controls high angle light• Minimizes heat gain

Minimize roof area required for daylighting• Less structural reinforcement needed• High insulation capacity of building envelope maintained• More space on roof for solar power panels or other equipment

Transfer

Spectralight Infinity TubingLight Transfer Efficiency (LTE)• Highest specular reflectance for visible light 99.7%• Multi-story installations with minimal light loss• Extremely long tube runs • Angular capability: multiple 1-90 degree turns

Light to Solar Heat Gain (LSG)• Cool Tube Technology minimizes heat gain

Color Temperature Maintenance (CTM)• No color shift

Deliver + Control

Diffusers, Decorative Fixtures, Dimmers• Engineered lens optics for consistent distribution patterns

and maximum delivery of light to work plane

• Daylight Dimmer for total control of meeting room and theatre lighting environment

• Stylish and functional interior options

Economic and Carbon Emissions Reduction Example

Daylighting ComparisonVersus Electric Lighting

Site Assumptions:– Cairo

– 70 x 70 x 12 meters

– Insulated building envelope (roof & walls)

– Air-conditioned interior

– Exterior average of 4 degrees warmer

Daylighting Assumptions– Replace electrical lighting

during daytime hours

– True sunlight intensity at location

– Transition to electrical light at dawn & dusk

– Design with Solatube SkyVault

Design Resultsfrom assumptions

420 lux averagedawn to dusk

Ceiling Plan (121 units)

Daylighting Impact on Electric Lighting Expense

Lighting costs reduced up to 80% with daylighting - Massachusetts Institute of Technology

Solatube Quantitative BenefitsAnnual

Electric Lighting Saved 125,103 kWh

Net Financial Savings 63,810 LE

CO2 Emissions Avoided 89,328 Kg

Electric Lighting Increases HVAC Energy Expense

HVAC

Up to 20% of HVAC energy expense can be saved by daylighting - FacilitiesNet

which daylighting mitigates

Solatube Quantitative BenefitsAnnual

Electric Lighting Saved 125,103 kWh

HVAC Energy Savings 35,571 kWh

Net Energy Savings 160,674 kWh

Net Financial Savings 80,340 LE

CO2 Emissions Avoided 112,472 Kg

Daylighting Also Adds HeatWhich can increase HVAC Load

HVAC

Which Solatube Technology Minimizes

Highest Light to Solar Heat Gain Ratio

Solatube Quantitative BenefitsAnnual

Electric Lighting Saved 125,103 kWh

HVAC Energy Savings 35,571 kWh

HVAC Loss from Solatube (1,711) kWh

Net Energy Savings 158,963 kWh

Energy Financial Savings 79,480 LE

CO2 Emissions Avoided 111,274 Kg

Daylight and Human Performance Research

• Spectralight Infinity is spectrally neutral for visible light with virtually no color shift.

Underlying Basis of PerformanceNatural Light spectrum

Daylighting Improves Human Performance

• Increased staff productivity

• Reduced absenteeism

• Increased employee retention

• Improved student performance

• Improved quality control

• Increased retail sales

• Improved healing time

• Improved mood

• Greater occupant well-being & satisfaction

Human Performance Improves the Bottom Lineexample data

• Profit from increased sales associated with daylighting is worth at least 19 times more (and up to 100 times more) than the energy savings from daylighting - California Energy Commission

• Retails sales per square foot significantly higher with daylighting -Wal-Mart

• Energy bills reduced by 50% and absenteeism drops by 45% -Hewlett-Packard

• Worker productivity improves by 15% with daylighting - Lockheed

• Daylight improves student test scores by 26% - Northwest Energy Efficiency Alliance

Added Human Performance Benefitswith $0.35/sq-m/month impact

Electric Lighting Saved 125,103 kWh

HVAC Energy Savings (Expense) 35,571 kWh

HVAC Loss from Solatube (1,711) kWh

Net Energy Savings 158,963 kWh

Energy Financial Savings 79,480 LE

Human Performance (3X Benefit)

200,000 LE

Net Financial Savings 279,480 LE

CO2 Emissions Avoided 111,274 Kg

Solatube Competitive Position

• Versus Electric Lighting:– Reduce energy expense

– Increase human performance

– Reduce carbon footprint

– Increase energy independence

• Versus Other Daylighting Options:– Increase space available for solar power

– Reduce structural reinforcement cost

– Reduce energy cost from heat gain

– Higher consistency & control of lighting levels

Solatube Products

Flexible Product Configuration