Upcoming events

    • October 07, 2017
    • 11:00 AM
    • October 08, 2017
    • 5:00 PM
    • DC Metro Area, Virginia, Maryland

        Join us for a weekend of fun & learning:-
        Saturday & Sunday, October 7tht & 8th, 2017   

    11am to 5pm


    Local and National Tours include:
    1.  27th Metro DC Tour of Solar & Green Homes  
    2.   Find other tours at
    The tour is FREE.  All you need is a copy of the appropriate Tour Brochure, which will serve as your family's ticket to all homes.
    To get your copy of the Guide including Map, you can either:
    Download a FREE electronic copy of the Guide w/ Map;
    Join MASES by 9/15 and get a FREE copy by mail;   
    Purchase a printed copy at select retailers in the Metro DC area while supplies last; or
    Order your own printed copy right here online, and we'll send it to you by first-class mail. (Only $10 including shipping for Non-members, Free for Members.)  Just register for the Solar Tour here and we'll send you a copy.  Be sure to order by September 15th to ensure arrival before the tour.          



    For more information on this year's tours, as well as where to buy a brochure, visit 

    And for information about other tours around the U.S., 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 donations are most welcome.

Past events

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. 

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