Stonco Solar Lighting

The Absolute in Green Lighting Solutions

Stonco Solar 101

Stonco Solar 101Solar-Powered LED Lighting Solutions

How Does Solar Work?

A Basic Solar Lighting System

It’s All About the Sun The sun provides energy source to the solar panel Solar panels convert the sun’s energy into electricity Battery is charged during the day by direct-current (DC) from the solar panel A light source is powered by the battery each night The controller/driver charges the battery and avoids overcharging The controller/driver detects dusk and dawn, switch the light on or off as needed

How Does Solar Work?


A Stonco Solarized Lighting System


Crystalline silicon: poly or mono Anodized aluminum frame Tempered glass is anti-reflective and impact resistant 13% efficiency Nominal panel voltage (17.6 VDC & 35.2 VDC) Junction box for easy electrical connections Three main sizes (80W, 100W and 125W)

Photovoltaic (PV) Array


Reliable extended battery life - Nightly discharge is 20% with 5 day back-up - Provides between 1400 and 1700 cycles (3-5 years) - Lifetime is dependent of depth of dischargeMaintenance-Free Construction - Valve regulated lead acid sealed battery - Resistant to damage from vibration - Eliminates risk of acid leaks - 100% recyclable

Batteries


Solarized Charge Controller/Driver


Designed to regulate power to and from the battery - Regulates the battery charge - Prevents the battery from over-charging - Manages the rate of charge within acceptable rangeManages the power coming from the battery to the light - Controls when light comes on and goes off - Prevents the battery from running below safe levels

LEDs use constant current drivers Drivers work like ballasts Solarize LED drivers are designed to last as long as the LEDsFeatures No electrolytic capacitors All digital design Microcontroller controlled Control of power to the lights to conserve battery High efficacy design

Charge Controllers / Drivers


MCL Medium Cutoff Roadway Luminaire SSM Architectural Area Luminaire 60, 40 and 30 watt LED options

Stonco High-Performance LED Fixtures


MCL

SSM

Light Source Super long life Digital no filament or glass to break No gassesEnvironmentally Friendly No lead No mercury All LEDs are not the same

Philips LED Technology


Round tapered steel construction Choice of direct burial or anchor base mounting Effective Projected Area (EPA) Designed for system weight Rated for 100 mph wind zones ASCE wind exposures Pole tenon top bracket adapter Designed for local codes

Poles


Customizing a Solar-Powered Light System for Your Application One size does not fit all Geographic location is critical Operating mode must be determined Stonco lighting experience a must The Devil is in the details

System Sizing


The Stonco “Solarize” Approach


Use the worst case to set your panel & battery size Longest night (longest operation) & shortest day (lowest insolation) occur in January in the Northern Hemisphere The system must operate through several weeks of these conditions The balance of the year there is plenty of overheadDesign it right and build it right leads to happy customers Works every night Safety factors are used for safety, not standard operation Will survive long nights in winterAllow for depreciation Solar panels lose some efficacy over time Panels depreciate approximately 10% in 10 years

Solar Lighting Glossary


Depth of Discharge:What % of the total battery energy the system consumes per night

Amp Hours (Ah): Maximum amount of stored energy in a battery

Operating Mode:How the light is delivered (Dusk to Dawn, Split Night, Split Night with Dimming)

Effective Running Time (ERT):Number of hours the light is on at night

Depth of Discharge:What % of the total battery energy the system consumes per night

Amp Hours (Ah): Maximum amount of stored energy in a battery

Operating Mode:How the light is delivered (Dusk to Dawn, Split Night, Split Night with Dimming)

Effective Running Time (ERT):Number of hours the light is on at night

Solar Lighting Glossary


Insolation: Intensity of average daily sunlight in an area –in sun hours

NREL & NASA Data Sets:National Renewable Energy Laboratory and National Aeronautics & Space Administration collect and update data sets on insolation and weather data at a location

Watts (W): Measurement of electrical power

Backup: Number of nights the system will run with no solar charging

How to Select a Good Project Not difficult to understand Use practical sense in determining project type and size Determine system components using project zip code Target area free of light obstructions

Selecting a Site


Determine What is Workable Complete a site survey Determine what is to be illuminated Can the customer afford a solar lighting system Is there ample sunlight during the day Qualify wind velocities

Selecting a Site


Project Viability and Qualification – Common Sense Requirements Sun availability Clear southern exposure Be aware of heavily shaded areas Be aware of ambient light sourcesLight Level Requirements Does a minimum light level need to be met Evaluate system operating times Operating light levels Security lighting requirements

Selecting a Site


Ideal Clear view of sky Open space Direct pole burial

Application: Playground


Marginal Excessive vegetation Obstructed view of sky

Ideal Clear view of sky Open space Distant foliage

Application: Walking Path


Marginal Inconsistent clearance Possible sunlight obstructions Can use direct burial pole

Not Acceptable Dense vegetation Obstructed view of sky

Application: Parking Lot


Ideal Clear view of sky Costly trenching Potential safety issues

Ideal Clear view of sky Distant vegetation Good business type

Ideal Low height desert scrub Consistently sunny Few obstructions

Application: Parking Lot


Marginal Possible building shadows Electricity available

Not Acceptable Close to tall buildings Limited sunlight from building shadows

Not Acceptable Present grid lighting Not practical for solar

Ideal Clear view of sky Open area far from obstruction Limited access to grid power

Application: Recreation


Marginal Reasonably good view of sky Open areas Possible mountain shadow

Not Acceptable Clear view of sky, however, Sports require high light levels

Application: Recreation


Not Acceptable Very limited view of sky Too many obstructions

Ideal Clear view of sky Remote location Limited illumination requirements

Application: Roadway


Marginal Clear view of sky Higher illumination requirements

Not Acceptable Clear view of sky Roadway requirements remain high

Application: Roadway


Not Acceptable Never meet federal guidelines of less than $10,000 Roadway requirements remain high

Ideal Clear view of sky Remote location Ideal for path and sign lighting

Application: Monument


Product Development Evolution of Smart New Lamp & Ballast Technologies Deliver New Standards in Energy Efficiency, Performance Environmentally Friendly Lighting Solutions

Stonco’s Commitment & Endorsement


Stonco Solar Lighting

Business

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