Tech Help

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  1. How much of a load does a solar array add to a roof?

    Added by Onur Turna on 02/15/2012

    Evaluating the ability of a roof to support solar panels requires assessing the condition and construction of th


  2. What are the major roof types for installing solar?

    Added by Onur Turna on 01/03/2012

    As long as there is enough space and enough access to the sun, solar panels can be installed on just about any roof.

    Article – 5 comments

  3. How to find rafters on a roof for a solar installation

    Added by Onur Turna on 01/02/2012

    Safety Note:  Whenever working on a roof, use adequate fall protection.  An essential part of installing PV racking

    Article – 1 comment

  4. Electrical Noise Emissions from a Solar PV Inverter / Charger

    Added by Damian Waco on 01/02/2012

    Electrical interference is a problem that might be encountered with solar power system electronics.

    Article – 1 comment

  5. How do you space a ground-mounted array?

    Added by Phil Green on 12/19/2011

    Here are some  pointers for a well designed ground-mounted array.

    Article – 1 comment

  6. Can an inverter be installed outdoors?

    Added by Damian Waco on 12/13/2011

    There are many inverters for PV systems that can be installed outdoors.


  7. Solar Powered Water Pumping

    Added by Damian Waco on 12/05/2011

    Any renewable energy source can make the electricity needed to power various appliances, including pumps.

    Article – 2 comments

  8. String Inverter or microinverter, which is the right way to go?

    Added by Damian Waco on 11/29/2011

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  9. How Heat Affects Solar Panel Efficiency

    Added by Damian Waco on 11/08/2011

    Normal.dotm 0 0 1 120 684 5 1 840 12.0

    Article – 5 comments

  10. How Long Do Solar Panels Last?

    Added by Damian Waco on 11/01/2011

    The number most often referenced for the lifetime of a Silicon (Si) based solar panel is about 25 years.  Solar panels are an expensive up

    Article – 2 comments

  11. Solar Power for Charging The Electric Car

    Added by Phil Green on 10/21/2011

    Many people forget that most electric cars are recharged by plugging into an electric grid which is customarily fueled by coal, nukes or o

    Article – 2 comments

  12. Sizing the DC Disconnect for Solar PV Systems

    Added by Stuart Fox on 10/20/2011

    A solar PV system typically has two safety disconnects. The first is the PV disconnect (or Array DC Disconnect).

    Article – 6 comments

  13. Solar Renewable Energy Certificates (SREC)

    Added by Camilla Jacks on 10/13/2011

    In a grid-tied Solar PV System unused energy can be sent back to the utility at the grid connection. Solar PV system owners receive utilit

    Article – 4 comments

  14. Balance of System (BOS) for Solar PV

    Added by Guest on 10/10/2011

    A Solar PV Balance-of-System or BOS refers to the components and equipment that move DC energy produced by solar panels through the conver

    Article – 1 comment

  15. Microinverter Application for Off-Grid PV Systems

    Added by Guest on 10/06/2011

    Approximately 5%-30% of collected energy is lost or wasted while an inverter converts DC power from solar PV to AC power. Inverter efficie

    Article – 5 comments

  16. Solyndra’s Bankruptcy and the Future of US Solar Manufacturing

    Added by New Contact on 09/26/2011

    On August 31, 2011, American solar module manufacturer, Solyndra announced bankruptcy.

    Article – 1 comment

  17. Transformerless Inverters for Solar PV

    Added by Guest on 09/26/2011

    What is a transformerless (TL) inverter?

    Article – 4 comments

  18. Nationally Recognized Testing Laboratory (NRTL) Certification

    Added by New Contact on 09/22/2011

    NRTL certification means your solar panels and solar modules conform to safety, health, and environmental standards as required by: NEC

    Article – 3 comments

  19. Pros and Cons of Battery Backup PV Systems

    Added by Guest on 09/14/2011

    Since PV systems produce electricity directly from sunlight and maximize the efficiency of energy collection, it may seem like adding or c

    Article – 1 comment

  20. How To Choose An Electrical Circuit Breaker

    Added by Romain Mirouse on 08/19/2011

    What is a circuit breaker?


  21. The Advantages of a PV Monitoring System

    Added by Kevin Tai on 08/08/2011

    Other than the obvious soiling that occurs on the face of a module, how can a PV system owner know that they are producing their rated pow

    Article – 2 comments

  22. Pure Sine vs. Modified Sine Wave Inverters

    Added by Onur Turna on 08/04/2011

    Both photovoltaic modules and batteries use direct current (DC) power.


  23. Solar Panel Cleaning

    Added by Kevin Tai on 07/29/2011

    When it comes to keeping your solar panels clean, the most asked questions are why, how, and how often?  Why keep solar panels clean?

    Article – 9 comments

  24. Standing Seam Metal Roof Application

    Added by Ken Crawley on 07/06/2011

    I rebuilt my roof for 150 MPH winds, or for the zombie-near miss tornado.  It is 22 gauge steel, white color with 85% reflectance.  The se

    Article – 9 comments

  25. Field Inspection Guidelines for PV Systems

    Added by Levent Bas on 06/23/2011

    We would like to introduce the  "Field Inspection Guidelines for PV Systems" (pdf) , a report by Brooks Engineering.