Principal Solar Institute

A community for solar development professionals.

The Principal Solar Institute - Advancing the Solar Profession

Members of the Principal Solar Institute seek to learn:

  • How do you develop solar projects with long-term financial success?
  • What are the best solar technology products in the market - today and tomorrow?

If you are searching for these answers - whether from the perspective of technology, finance, or policy, then you should subscribe to our FREE email list to receive updates from the Principal Solar Institute here:

About the Principal Solar Institute

Our online reference center and resource guide is for solar development and installation professionals who make system component design recommendations and purchasing decisions in the commercial and utility scale market.

  • PSI Ratings - Unbiased Ratings for Solar PV modules
  • Webinars - Browse our list of online events for solar professionals
  • Resource Guide - Find organizations in the solar industry, and compare products by category
  • Whitepapers - Download whitepapers from industry experts

Next Webinar Starts In:


Date & Time (EDT) Title Presenters
Wednesday, November 19, 2014
12:00pm - 1:00pm
What's in Store for Solar in the 2015 Texas Legislative Session? Russel Smith
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Turning Green into Greener
March 8, 2012 4:03pm


Introduction to PSI Ratings
August 31, 2012 10:44pm


U.S. EIA Forecast for Solar
May 25, 2014 9:37am


Webinar Slides: PACE Comes To Texas
September 26, 2013 4:12pm


Webinar Proposal Form
November 18, 2011 11:24am


Solar Calculators
May 1, 2014 9:47pm


Email signature logo
July 24, 2014 2:34pm


EIA-860 Instructions
August 19, 2014 1:47pm


EIA-860 Survey Form
August 19, 2014 1:51pm


Texas and Germany: Energy Twins?
August 25, 2014 4:15pm

News: Principal Solar Institute 
  • SEIA calls for investment tax credit rethink March 28, 2014 11:29am

    SEIA calls for investment tax credit rethink: The Obama administrations budget proposal allows the U.S. Investment Tax Credit (ITC) to expire on December 31, 2016.  The 30% ITC will be replaced with a Production Tax Credit (PTC) equivalent to $0.022/kWh. Fuel cell and small wind project investors will also lose out on the 30% tax redemption offered by the ITC with geothermal, microturbines and combined heat and power projects set to lose a 10% allowance under the credit, at the end of 2016. U...
    View this post

  • Solar Less Than 5¢/kWh In Austin, Texas! March 28, 2014 11:21am

    Solar Less Than 5¢/kWh In Austin, Texas!: Solar power is apparently going to be sold to Austin Energy for a tiny bit less than 5¢/kWh under a new 25-year power purchase agreement (PPA) with SunEdison. It’s from two solar power plants totaling 150-megawatts of capacity — a 350,000-panel, 100-megawatt facility; and a 150,000-panel, 50-megawatt facility nearby. Read more at http://cleantechnica.com/2014/03/13/solar-sold-less-5%c2%a2kwh-austin-texas/#3FQ4PQOmDw7piuBw.99 This is incredible new...
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  • Anatomy of a Deal: 4-Cent-per-Kilowatt-Hour Solar in Palo... March 21, 2014 11:56am

    Anatomy of a Deal: 4-Cent-per-Kilowatt-Hour Solar in Palo Alto “The PPA takes advantage of the usual 30 percent investment tax credit, plus a generous five-year, 29-cent-per-kilowatt-hour performance-based incentive (PBI).” “Rubin revealed that the project sold for $2.87 per watt and had a sub-$2.50-per-watt installed cost.” This project was 398 kW distributed on 12 rooftops.
    View this post

  • Why We Need Edward Snowden in Solar and The Market for Lemons February 28, 2014 12:06pm

    Why We Need Edward Snowden in Solar and The Market for Lemons: I’m glad to see things like Mercatus Single Point of Truth, TruSolar’s uniform credit screening, Energy Sage’s consumer research and Principal Solar Institute’s PSI ratings. These can all serve useful purposes,  in the same way the used car industry has Kelly Blue Book, Edmunds.com and Carfax these are all ways to decrease information asymmetry.  Nice to see the PSI Rating’s becoming part of the conversation!
    View this post

  • When there is a huge solar energy spill… February 28, 2014 12:02pm

    When there is a huge solar energy spill…
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  • Most Efficient Solar Panels -- Which Ones? - Cost of Solar February 3, 2014 11:26am

    Most Efficient Solar Panels -- Which Ones? - Cost of Solar: 21.5% SunPower solar modules hold the commercial solar module efficiency record.  SunPower’s SPR-327NE-WHT-D modules are also the leading solar modules in solar module yield field tests, and other SunPower solar modules come in #2 and #3 in those tests. (For those of you to who this matters or is interesting, SunPower is a US-based solar panel company.)
    View this post

Network Information


  • Matthew A Thompson
    Matthew A Thompson

    Executive Director
    Principal Solar Institute
    Austin, Texas

  • Laura Carabello
    Laura Carabello

    Media Relations
    Elmwood Park, NJ

  • Dan Bedell
    Dan Bedell

    Executive Vice President - Marketing & Corporate Development
    Principal Solar
    Dallas, Texas

  • Kirk Blankenship
    Kirk Blankenship

    Institute Development
    Principal Solar
    Dallas, TX