Welcome to the Mid Atlantic Solar Energy Society


Join friends and neighbors in the Mid-Atlantic Region as we work together with people from across the nation and around the globe to create a truly sustainable world for all.  
We hope to see you at one of our upcoming events.    Welcome to MASES!

MASES is a regional chapter of the American Solar Energy Society.
  Get your FREE Tickets

to the DC Solar Tour at


Where Neighbors help Neighbors learn about

Solar Energy, Energy Efficiency, Sustainability & More.



Tour 20 Solar & Green Homes!

Visit a Large Community Solar Array!

Learn how YOU can help SAVE Planet Earth!

It's simply what's next after the Global Climate Strike!

Download your FREE Ticket, Guidebook & Map at


Get A Free PRINTED** Guidebook with Map with all Donations to our new GoFundMe/CrowdRise Campaign

   Please Help Support Your local DC-area Solar Tour:     Donate or Volunteer today! 


** Special Note:  We're now getting very close to the Tour, so plan that you may need to download an electronic copy in PDF format for free at in time for the Tour, then keep the PRINTED Guidebook as a valuable solar reference and keepsake when it arrives.


Please help support our programs. 


Donate Today!



The Mid Atlantic Solar Energy Society is a regional chapter of the American Solar Energy Society, serving the Metropolitan Washington DC area and surrounding states. 


Charitable contributions to all MASES and ASES are Tax Deductible per IRC Section 501(c)(3).

Thanks so much for your generous support!

Solar Internships Now Available.  Apply today!


Want to help convert our world to run on 100% Clean, Renewable Energy?  


If you're passionate about mitigating adverse climate change and want to bring your current skills to this task while also learning new ones, we welcome you to join us for a season of learning and adventure.  


As always, Apply Early for best choice of assignments. 

                         Join MASES Today

                          FREE SOLAR ENERGY

To join MASES, renew your membership, or subscribe to our e-Newsletter, just click on the "Membership" page in the menu to the left and follow the instructions.  Your MASES password will be sent to the email address you provide on the registration form. 


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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