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Specializing in off-grid, grid-tie and DIY solar power since 1999.

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Featured Solar Panels & Solar Gear

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Schneider Electric Conext XW Pro 6848 Inverter/Charger

$2,995.00

List price $4,564.00

Peimar 340 Watt Poly Solar Panel

$163.75

List price $200.00

SimpliPhi Power PHI 3.8kWh Lithium Battery, 24V

$2,675.00

List price $4,200.00

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BLOG UPDATES

Rapid Shutdown Blog Part 2; Charge Controllers Jul 20, 2020

NEC 690.12 Rapid Shutdown of PV Systems on Buildings – Part 1 Inverters Jul 02, 2020

Two Ways To Get Amped, Three Ways To Get Charged May 06, 2020

NEWS UPDATES

altE COVID-19 Outbreak Response Plan: Walk-In Sales & Customer Pick-Ups

Effective Tuesday, March 17 we will be temporarily suspending our walk-in service to do our part in adhering to the CDC’s recommended social distancing and to protect our employees, their families and our loyal customers.
KiloVault Unveils PLC Advanced Pure Lead Carbon Batteries

The KiloVault PLC advanced AGM battery is available at this page. Posted here with the permission of KiloVault, LLC.

LATEST YOUTUBE VIDEO

We walk you through testing both the volts and amps of a solar panel, and compare the readings with the standard test conditions (STC) rating of the panel to determine if the solar panel is performing correctly. A simple multimeter is required to read both

How to test a solar panel.

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Mike, Lafayette, CA says:

I have ordered from you folks a number of times, and called a few more regarding questions i have had. your service and staff have been nothing but stellar every time! Thank you everybody at alt e.

CUSTOMER STORY

The Solar Challenge

Philip Shelton likes a challenge and designing a solar hot water system for his home may be his biggest hurdle yet. Phil gives us a glimpse into the life of this busy but determined Maine family.

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