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Core Development Group

We are experts in commercial solar systems, including community solar development. We can help businesses and landowners get onsite solar (including battery storage) and transition to clean energy and meet net zero emission goals.
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About Core Development Group

Core Development Group, headquartered in Mahwah, New Jersey, is the nationally-ranked renewable provider of commercial-scale solar that is helping transition companies to clean energy and meet net zero emission goals. We develop custom renewable energy strategies based on the unique needs and requirements for each customer, including commercial solar and community solar development. With local expertise across the USA, we deliver customized commercial solar system designs and installation solutions, while offering ability to manage and maintain these commercial solar systems. Our mission is to help power the world’s companies and communities now and for years to come through sustainable energy development.
Year Established
Phone Number
(201) 825-2195

Services Offered

  • Installation
  • Financing
  • Architecture
  • Construction
  • Electrical Contracting
  • General Contracting
  • Solar Repair & Maintenance
  • Community Solar

Workmanship Warranty

Product, performance, and labor warranty on all projects per terms and conditions of each contract. Asset Management and Operations & Maintenance services are available.


Several General Contractor Licenses and Electrical Licenses in States that we serve.


Insured in across the USA and internationally


North American Board of Certified Energy Practitioners (NABCEP), Solar Energy International (SEI), PMP certified Project Managers, Master Electricians

Industry Certifications

  • Better Business Bureau
  • North American Board of Certified Energy Practitioners
  • Solar Energy Industries Association
  • Solarize Connecticut
  • Solarize Massachusetts
  • Solarize Rhode Island



Other Locations

States Served