About Us

Our Management Team


Mariellen Donohue
Mariellen Donohue   President     

Mariellen is a graduate of Villa Maria Academy in Malvern, PA and Villanova University in Villanova, PA with a Bachelor of Science degree in Accountancy.  Mariellen has been with Avalon Energy since 2009 and specializes in LED Lighting Design, Rebates, & Project Management in addition to electric rate and energy usage savings and works with many owners & facility managers of Data Centers, Office Buildings, Hotels, Hospitals, Car Dealerships, School Districts & Government Buildings.





Tony Biggins
Tony Biggins           Vice President

Tony is a graduate of Malvern Prep in Malvern, PA and studied Business Administration at Villanova University in Villanova, PA.  Tony heads our Agent Partner Channel and has been with Avalon Energy since 2010.  In addition to electric and gas rate savings, he specializes in Commercial Electric Generator Installations and Rentals, LED Lighting and Electric Retrofits and works with many Golf & Country Clubs, Restaurants, School Districts, Medical Facilities and Manufacturing Plants.

Business Hours

Monday - Friday 8 a.m. - 5 p.m.

Other times by appointment


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