Upcoming events

    • September 20, 2018
    • 12:01 AM
    • October 31, 2018
    • 11:59 PM
    • Nationwide Fundraising Campaign


    Solar to the Rescue...


    Help Rebuild Puerto Rico

    with Solar Energy!


    Become a Founding Member of the

    Puerto Rico Solar Energy Society tm (PRSES).


    The Puerto Rico Solar Energy Societytm (PRSES)

    is a fiscally sponsored program of the

    non-profit Mid Atlantic Solar Energy Society,

    regional chapter of the American Solar Energy Society,

    serving Washington DC and surrounding states


    Your generous support will help educate fellow U.S. Citizens in Puerto Rico about the Cost-Effectiveness, Environmental Benefits and, most importantly, the RESILIENCY made possible by distributed solar energy.  


    With your generous help, it's "Solar to the Rescue!"  



    Please visit our 

    PRSES Founding Membership

    page to become a

    Founding Member today!


    All charitable contributions to MASES and the PRSES program are Tax Deductible per IRC Sect. 501(c)(3). 

    • October 06, 2018
    • October 07, 2018
    • 2 sessions
    • DC Metro Area, Virginia, Maryland
    Get your DC Solar Tour Guide Today!
    Join or Renew by Sept. 30th to get yours FREE at
    while supplies last, or visit

        Join us for a weekend of fun & learning,-
        Saturday & Sunday, October 6th & 7th, 2018   

    11am to 5pm


    The tour, itself, is FREE.  However, you'll need a copy of the solar tour Guide with Map, which will also serve as your family's ticket to all homes.
    To get your copy of the Guide with Map, you can:
    1.   Register Online, and we'll send you a copy of the Guide by first-class mail in late September (Guide is FREE for Members, $10 for Non-members including shipping.)
    2.   Purchase Locally  at select retailers in the Metro DC area for $5 while supplies last.  Visit for locations.
    3.   Buy Online for $10 (including shipping) while supplies last at either or    
    4.   Download a FREE electronic copy of the Guide w/ Map.  But you must do the printing.
    5.   Join MASES (or Renew your Membership if expired) and we'll send you a FREE copy by first class mail -- or multiple FREE copies for all Business Memberships.  Plus, save 20% to 50% on all memberships now until the DC Solar Tour
    For more information on this year's tours, as well as where to buy a brochure, visit 
    Bring your family and friends and make a day of it!
    The local solar tours are co-organized by the Mid Atlantic Solar Energy Society, a chapter of the American Solar Energy Society, and folks from the local Sierra Club chapter.  All organizations are 501(c)(3) educational non-profits, and tax-deductible donations are most appreciated.

Past events

August 05, 2018 SOLAR 2018 -- ASES National Solar Conference & Summit
January 21, 2018 100% Renewables for the Mid Atlantic Region + MASES Annual Meeting
October 07, 2017 2017 Metro DC Solar Tour: (DC / MD / VA)
October 01, 2016 2016 Metro DC Solar Tour: (DC / MD / VA)
July 10, 2016 SOLAR 2016 -- ASES National Solar Conference
June 25, 2016 Help DC, MD & VA Achieve 100% Renewables at MASES Annual Meeting
April 16, 2016 2016 P3 Competition / National Sustainable Design Expo -- FREE
April 16, 2016 4th USA Science & Engineering Festival -- FREE
July 27, 2015 SOLAR 2015 -- ASES National Solar Conference
May 23, 2015 Going Solar in 2015 (Part 2) + MASES Spring Meeting
April 11, 2015 National Sustainable Design Expo / P3 Competition
January 03, 2015 Going Solar in 2015 + MASES Annual Meeting
October 04, 2014 2014 Metro DC Solar Tour: (DC / MD / VA)
July 06, 2014 SOLAR 2014 -- ASES National Solar Conference
April 26, 2014 National Sustainable Design Expo / P3 Competition
November 03, 2013 ISES Solar World Congress 2013
October 05, 2013 Solar Tour: Metro DC / Maryland / Virginia
October 01, 2013 Project Digitize Campaign
September 21, 2013 DC Green Festival (Visit MASES as Booth #540)
April 21, 2013 Green Living Expo and Earth Week Community Fair
April 20, 2013 SolarFest 2013
April 16, 2013 SOLAR 2013 -- ASES National Solar Conference
October 06, 2012 National Solar Tour
September 17, 2012 Maryland Clean Energy Summit 2012
May 13, 2012 2012 World Renewable Energy Forum & ASES National Solar Conference
February 13, 2012 DC SUN: A Collection of Solar Cooperative Neighborhoods
December 04, 2011 Open House at Solar Home in Olney
September 23, 2011 Solar Decathlon

Never doubt what a small group of

dedicated people can do.

MASES is a regional chapter of the American Solar Energy Society. 

Site contents copyright 2007-2017, Mid Atlantic Solar Energy Society. All rights reserved.

Powered by Wild Apricot Membership Software