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7317 JACK NEWELL BL VD. NORTH, FORT WORTH, TEXAS 76118-7100 TOLL FREE: 800.886.4683 VOICE: 817.595.4969 FAX: 817.595.1290 WEBSITE: WWW.EXELTECH.COM

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1 From Blue Sky Energy

We've done it again. Blue Sky Energy is proud to announce Dusk to Dawn Solar Lighting control for all of our *IPN based Charge Controllers.

•FOR NEW PRODUCTS WITH SOFTWARE VERSION 2.0

Features include...

• Patented Multi-Stage MPPT Charge Control

• Fully adjustable Post Dusk & Pre-Dawn timers

From industrial to consumer, we have a product that's right for your needs.

Blue Sky Energy, Inc. manufactures and distributes worldwide.

Reasonably priced and quality built since 1993.

Contact us today for more information

800-493-7877 or 760-597-1642

2598 Fortune Way, Suite K, Vista, CA 92081 USA

blueskyenergyinc.com

QUAUTY REUABIUTY BLUE SKY ENERGY, CHANGING THE WAY SOLAR IS USED EVERYDAY

QUAUTY REUABIUTY BLUE SKY ENERGY, CHANGING THE WAY SOLAR IS USED EVERYDAY

v by Ryan Mayfield

Computer-Based Solutions for PV System Monitoring

T" he beauty of batteryless grid-tie PV systems lies in their simplicity: Few, if any, components with moving parts translate into virtually maintenance-free electricity generation. But the handsoff nature of grid-tie PV can make it easy for an owner to lose track of their system's daily operation and assume it is functioning optimally—even if it isn't. Unless you tend to keep a close eye on your electric utility bill, in some cases months might go by before a problem is detected.

Example Web-Based Monitoring System

PV Array

Inverter

Optional Sensors:

Irradiance, ambient temperature, cell temperature, wind speed, etc.

Inverter

AC Service Panel

Utility Net Meter

Web Monitoring Server

World Wide Web A *

Production /i,-.-.,, iS

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