Right on the Mark!

Mark DeYoannaBrooklyn born and bred, 29-year company veteran Mark De Yoanna has a chance to give back to the city he loves in a big way.

Mark was named by New York City Mayor Bill de Blasio to the Green Buildings Technical Working Group (TWG) – a group of 40 industry leaders charged with helping develop policies and programs to transform the city’s building stock to a 30 percent reduction in building-based emissions by 2025. The TWG is a key part of the Mayor’s pledge to reduce greenhouse gas emissions in New York City by 80 percent by 2050 (based on 2005 levels).

“This is both an honor and a great opportunity,” said Mark. “My participation will help ensure the integral role our energy efficiency programs and gas growth strategy play in New York City going forward. Our goal is to help positively shape the environment for the city and our customers for the next 35 years.”

Mayor de Blasio’s report, One City: Built to Last, states buildings are responsible for 75 percent of all greenhouse gas emissions in the city.

According to Mark, the TWG will:

  • Focus on New York City’s Multifamily Accelerator Initiative to achieve its 30 percent reduction in building-based emissions by 2025.
  • Develop metrics and interim targets to track progress, and recommend potential mandates and incentives triggered if targets are not met.
  • Consider all options to improve building systems and performance, and overcome the social and market barriers in order to achieve 80 by 50.

The city he has already achieved a 19 percent reduction from 2005 levels, and is on track to reach a 30 percent reduction by 2025, five years earlier than the city’s initial goal.

Mark is currently Principal Program Manager of Vendor & Alliance Strategy in the Customer Strategy & Environmental Department based in Brooklyn. He’s also held many management positions in Customer Operations and Corporate Strategic Planning and Performance. He lives in Boerum Hill, Brooklyn in a restored (ongoing) 1870s Brownstone with his wife.

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Chris Cavanagh

We are very lucky to have a voice with NYC’s government and lucky to have Mark in this role with experts in our government relations and jurisdictional areas. NYC’s government is among the largest and most progressive in the world and is the place of many firsts including the birthplace of electric and gas utilities and more to come.

Renee Devine

Congratulations, Mark. Indeed, we are very lucky.
Great advocate for helping our customers and our cities save.
Think of what we can do, what we can save, together.

Kind regards,
Renee Devine, UNY EE

Frank Novello

Hats off to you Mark. It’s great that you’re being recognized for one of your many talents. You have always been an asset. Congratulations.

Pam Foca

Mark – Congratulations! I feel better knowing a voice of reason, honesty, intelligence & concern is helping to guide the development of the programs.

All the best my friend!
: )

Mauri Myers-Solages

Congratulations Mark! Well deserved. Your leadership and expertise will be put to great use in shaping NYC’s goals on becoming a more energy efficient city.

Anna Marietta

Mark, you are the perfect person for this job! National Grid and the City are lucky to have you!

Bob Allgor


Great effort with NYC! It will certainly be an asset for the city and National Grid having you on the board. Congratulations.

Terry Yarde

I can’t think of a more deserving person for this endeavor.
Congratulations Mark

Carol Decina

Congratulations, Mark! You truly deserve this recognition and we are fortunate to have your expertise and professionalism on our team! Great job!


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