Questions, answered.

GravityBank is long-duration energy storage in the form of a structure. It raises water to store energy and releases it through turbines to return power to the grid, the same physics pumped hydro has relied on for more than a century, engineered into a vertical tower that can be built where the grid needs it. One structure delivers three things: energy storage, thermal management, and water resiliency.

When energy is abundant, pumps lift water to tanks at the top of the structure. When energy is needed, the water falls, spins turbines, and sends power back to the grid. The water stays in a closed loop and is used again and again. No combustion. No chemistry. Gravity does the work.

Traditional pumped hydro requires a mountain, two reservoirs, and permitting that can take a decade. GravityBank packages the same proven physics into a freestanding tower that can be sited on flat, urban, or industrial land, near transmission, near generation, or near demand. The reliability of pumped hydro, without the geography.

Lithium-ion batteries lose capacity with every cycle and are typically replaced within a decade or two. GravityBank is mechanical. It cycles without degradation and is designed for a 100-year operating life. It is non-combustible, carries no thermal runaway risk, and is built entirely from domestic materials: concrete, steel, and water.

Concrete, steel, and water, all domestically sourced. GravityBank is engineered to the same structural standards as a supertall building and designed for a 100-year operating life with zero performance degradation. The Hoover Dam has operated at its original efficiency since 1936. GravityBank is built on the same philosophy. Build once. Operate for generations.

The water inside GravityBank is a thermal battery as well as an electrical one. Its mass absorbs waste heat from adjacent facilities and rejects it efficiently at elevation, reducing cooling loads for data centers, central utility plants, and manufacturing by up to 50 percent. Storage and cooling, delivered by a single structure.

GravityBank is filled once. The water then circulates in a closed system, placing no ongoing demand on local supply. Where conditions allow, it can be filled with non-potable or reclaimed water. The reserve itself, up to 200 million gallons, can stand ready as emergency water supply for the host community.

The platform is designed to integrate. Integrated GBI builds GravityBank technology directly into the structure of a residential or commercial tower, so the building becomes part of the grid. Every deployment is engineered to its site, scaled and configured to the land, the load, and the community around it. GravityBank can also be developed partially underground by leveraging existing spent pit mines and other natural geological terrain like caves.

GravityBank is engineered to supertall building standards by the firm that has designed more supertall structures than any other. It is built to withstand extreme heat, high wind, and low-to-moderate seismic activity. There is nothing to combust and no chemistry to fail. Water and gravity behave the same in every forecast.

Concrete, steel, and water, all domestically sourced. GravityBank is engineered to the same structural standards as a supertall building and designed for a 100-year operating life with zero performance degradation. The Hoover Dam has operated at its original efficiency since 1936. GravityBank is built on the same philosophy. Build once. Operate for generations.