This New York State Energy Research and Development Authority (NYSERDA) Program Opportunity Notice (PON) 2458 seeks proposals to transition new energy storage technologies with proven technical feasibility to a working prototype. Eligible technologies are energy storage technologies that utilize electrical or electrochemical processes and include batteries, ultracapacitors, fuel cells and related components that integrate these technologies into complete systems. This solicitation is intended to advance promising energy storage technologies with already proven technical feasibility to a working prototype. Technologies should already have passed TRL 3 or higher, and proposed work should help transition the technology toward commercialization. Proposals will be evaluated on the basis of addressing market needs, the potential of the proposed solution, and benefits to New York State.