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Microinverters Hit the Market

With maximum power point tracking on a per-module basis, Enphase Energy's (www.enphaseenergy.com) microinverter system is creating much buzz in the PV industry. The microinverter allows each module to operate independently of others in the array, reducing power losses caused by partial array shading, mixed module types, mixed orientations, and equipment failures.

Each module is wired to a single microinverter, which is generally mounted behind the module on the array racking system. The AC output of each microinverter is plug-and-play cabled in parallel to the other module/inverter pairs in the array. AC electricity is connected to the utility grid via a back-fed circuit breaker in the main load panel. This approach eliminates high-voltage DC wiring and DC disconnect gear required for central-inverter-based PV systems. Because the output of the array is standard AC, the installation is more familiar and straightforward for electricians and inspectors.

The Envoy, a communications gateway, can be used to send information over a broadband Internet connection to Enphase's Enlighten Web site and monitor the performance of each module/inverter pair. Friendly graphics allow users to view their system performance and easily identify system problems on a per-module basis. Also offered is 24/7 system monitoring and analytics automatically performed by proprietary software, allowing Enphase technicians to detect system problems and offer solutions to system owners.

While these microinverters are new players in the PV industry, each comes with a 15-year standard limited warranty. For more information, see "PV Micromanaging" in this issue.

—Justine Sanchez

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CAPTAIN SOLARIAN*

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asg power asg power plus

Grid Tie Kits range from 0.12 kW to 10 kW. ASG Power Plus kits are expandable kits which will grow when you're ready to upgrade.

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Evergreen Solar ES-A-210

(fa2) 210W Solar Panel

The new ES-A Series feature high quality String Ribbon™ solar panels made with the latest generation of our revolutionary wafer technology.

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Enphase Micro-Inverter

M200-32-240-S01/2

Enphase Energy presents the first commercially available Micro-Inverter System for residential and commercial solar PV applications.

Air Breeze Land

24V Wind Turbine

Air Breeze is a perfect choice for hybrid wind/solar systems that provide you with the most reliable year-round energy supply.

Wattsun Solar Trackers

Wattsun tracker frames are precisely engineered for strength, are fabricated from steel and structural aluminum and dissas-semble for ease in shipping and installation.

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Kyocera KD205GX-LP

205W 16V Nominal Solar Panel

Kyocera's new and improved, larger modules feature higher output per module and maintain the three-bus bar circuitry along with d.Blue solar technology.

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Outback Flexmax 80

Charge Controller

The innovative FLEXmax MPPT software algorithm is both continuous and active, increasing your renewable energy yield up to 30% compared to non-MPPT controllers.

Getting Started With Solar

Getting Started With Solar

Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.

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