Annadale Energy is a development project of NineDot Energy. NineDot is a New York City-based clean energy developer focused on distributed energy resources (DERs) that help make the New York power grid cleaner, more reliable and resilient, and more affordable. NineDot was founded as CertainSolar in 2015.


Adam Cohen is co-founder and CTO of NineDot. Adam is a Ph.D. physicist who thinks of our energy system as a complex, interconnected experimental laboratory. He seeks to uncover small technical, financial, and regulatory improvements that will cause tipping points for clean energy diffusion. Prior to NineDot, Adam was Science Team Lead for Split Technology, a smart transportation start-up. Adam was a post-doctoral fellow of the U.S. Department of Energy where he launched a new research program applying social and behavioral science to scale up solar energy adoption. He earned a Ph.D. from the Chaos Group at University of Maryland and a BS in physics from Bucknell University.


NineDot is based our of the NYU Tandon School of Engineering Urban Future Lab (UFL) incubator in Downtown Brooklyn. UFL is New York City’s hub for smart cities, smart grid and clean energy.


David Arfin is co-founder and CEO of NineDot. David is driven to create innovative finance offerings to accelerate the adoption of clean energy. David invented SolarCity's SolarLease, the game-changing solar financing program. He received the first-ever Innovation in PV Financing Award from the Solar Energy Industry Association. Prior to SolarCity, David was co-founder and CEO of GlooLabs (acquired by Cisco Systems), co-founded Flywheel Communications, and was founder and CEO of CLE Group (acquired by PLI). He received an MBA from the Stanford University Graduate School of Business, an MA in Public Policy Analysis from the Claremont Graduate University, and a BA in Political Science from UCLA.


NineDot was awarded a U.S. Department of Energy SunShot Incubator award to develop its novel business model that gaurantees utility bill savings to project subscribers.

Local Approvals for Annadale Energy


Annadale Energy has support from the New York State Energy Research and Development Authority (NYSERDA) Clean Energy Fund (CEF) Stationary Fuel Cell Program. Under the Clean Energy Standard (CES), fuel cells are classified as a Tier 1 renewable electric generation source.

NYSERDA Stationary Fuel Cell Program


The New York City Fire Department (FDNY) Technology Management (TM) Unit performed a safety review of Annadale Energy and approved the site plans and operating procedures.


ConEdison completed in-depth technical studies of Annadale Energy to calculate the benefits and costs of interconnecting the DERs. Coordinated Electric System Interconnection Reviews (CESIRs) determined that the Annadale grid is suitable for fuel cell projects with minimal upgrades.

ConEdison Fuel Cell Guide


The Department of Buildings (DOB) and Department of City Planning (DCP) reviewed and approved Annadale Energy site plans. DOB and DCP determined that DERs can enhance New York City's energy resiliency and are critical elements of electricity infrastructure.  

New York City Buildings Bulletin on Fuel Cell Zoning


National Grid will deliver fuel to Annadale Energy via its underground natural gas infrastructure. The gas utility completed an in-depth study of its local gas system and determined that the Annadale gas grid is suitable for fuel cell projects with minimal upgrades or impacts.


The Department of Public Service (DPS) regulates the Commuity Distributed Generation (CDG) program, sets program requirements, and approves market participants.

DPS Uniform Business Practices for DER Suppliers