Upcoming events

    • October 07, 2017
    • 11:00 AM
    • October 08, 2017
    • 5:00 PM
    • DC Metro Area, Virginia, Maryland
    Order your Guide & Map before September 24th. 

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

    11am to 5pm


    Local and National Tours include:
    1.  The 27th Annual Metro DC Solar & Green Home Tour    
    The tour is FREE.  All you need is a copy of the solar tour guide & map, which will serve as your family's ticket to all homes.
    To get your copy of the Guide with Map, you can:
    Download a FREE electronic copy of the Guide w/ Map. 
    Join or Renew your MASES Membership to get a FREE copy by mail.
    Be sure to join or renew by September 24th to ensure arrival before the tour.   
    Purchaseprofessionally printed copy at select retailers in the Metro DC area for $5 while supplies last.  (Visit for locations). 
    Order copies right here online,  and we'll send it to you by first-class mail. (Only $10 including shipping via USPS first-class mail for Non-members, and FREE for Members.)  Just register for the Solar Tour here and we'll send you a copy.  Be sure to place your online order by September 24th to ensure arrival before the tour.
    For more information on this year's tours, as well as where to buy a brochure, visit 
    2.  Find other tours at  

    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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