The Energy Storage Challenge Facing Buildings Today

New York City ranks third in the world for cities with the largest carbon footprint per capita, according to a 2018 report by the Norwegian University of Science and Technology.
In New York City, buildings are a major source of greenhouse gas emissions, and Local Law 97 requires most buildings over 25,000 square feet to meet annual greenhouse gas emissions limits beginning in 2024, with stricter limits coming in 2030. For building owners, this creates a clear need for practical technologies that can reduce peak-period electricity use, support compliance planning, and improve long-term energy performance and avoid paying fines.
At the same time, many buildings face high demand charges, unpredictable utility costs, limited electrical capacity, and concerns about the safety of legacy Lithium Ion battery systems in dense urban environments. These challenges make safe, long-duration energy storage an important part of the clean-energy transition.

68% of NYC's greenhouse gas emissions come from buildings

Local Law 97 places carbon caps on NYC's large buildings

Under LL97, buildings owners face fines for noncompliance with emissions reductions

Our Solution

Ashlawn Energy's VanCharg™ is a vanadium redox flow battery system designed for stationary, long-duration energy storage. Our System stores electricity from the grid, solar, wind, or other electrical sources. This power can then be discharged for use during high-demand periods to support your building operations, reduce your peak demand, reduce your utility charges, and provide backup power.
VanCharg™ uses a non-flammable vanadium electrolyte that is stored in external electrolyte tanks. The system is designed for daily use and can be configured for many building, grid-connected, or stand-alone applications depending on the project requirements.
VanCharg™ programmable controls allow for multiple applications enabling off-peak charging periods to avoid inflated utility rates and demand charges. It can also be optimized for solar integration through Ashlawn Energy's energy management software and smart-meter integration.

How VanCharg™ Helps

icons

Reduce Peak Demand

VanCharg™ charges during off-peak periods and discharges during high-demand periods, helping buildings reduce peak demand and manage energy costs.

Support Local Law 97 Planning

By reducing peak-period electricity use and supporting cleaner energy strategies, VanCharg™ can help building owners plan for emissions compliance, and long-term decarbonization while avoiding fines.

Improve Energy Resilience

Long-duration energy storage supports building operations during periods of grid stress and power outage with backup power. This helps customers prepare for a more reliable electrified energy future.

Integrate Renewable Energy

VanCharg™ can store electricity from solar, wind, or the grid and discharge it when needed, helping customers make better use of available clean energy.

Use Safer Battery Chemistry

VanCharg™ is built on vanadium redox flow battery technology using a non-flammable electrolyte. UL9540A flashpoint testing found no flashpoint for the tested vanadium redox flow battery electrolytes, supporting its strong safety profile. The system also includes safety features such as leak detection, smoke monitoring, alarm communication, emergency stop functionality, and service-center alerts.