Meet Terrament

Terrament is building long-duration energy storage using underground gravity batteries. Our patent-pending design achieves high scale and low cost by maximizing the two simple ingredients of gravity storage: height and weight:

  • First, we maximize height potential by digging a mile deep into bedrock.
  • Second, we maximize weight using modules that lift their own weight.

Why Gravity Storage?

The threat of climate change has sparked action to replace fossil fuels with wind and solar energy. This transition is urgent, but it will stall without a key ingredient: energy storage.

According to NREL, grid-scale energy storage capacity in the U.S. is expected to grow five-fold by 2050. But we have a big problem: We don't yet have a viable energy storage technology that can reach this scale affordably.

Today, pumped hydro makes up nearly all of our energy storage, but this resource is nearly tapped out. Our feasible pumped hydro sites will be exhausted before we reach even 2x.

Meanwhile, even though Li-ion battery costs are dropping, they are still too expensive. And we don't even have enough raw Lithium material to produce the scale we would need to replace pumped hydro. Researchers are concerned that we may not even have enough Lithium for electric vehicles, let alone the much larger amount we would need to support grid storage at such an enormous scale.

We need a new solution. A solution which is low-risk, high-scale, and low-cost.

Terrament's Gravity Storage

Terrament's gravity storage design is in early development. This 3D animation is an early draft of our design concept. More details to be revealed post-funding.

3D animation of Terrament alpha design concept (early draft).

Terrament’s patent pending design achieves breakthrough efficiency by maximizing the two simple principles of gravity storage: height and weight.

  1. Height: We achieve 10 times more height than above-ground solutions. This is solved by digging a mile deep into bedrock (or using abandoned mine shafts).
  2. Weight: We achieve nearly 100% volume capacity with densely packed weight. This is solved with a modular design of self-supporting autonomous units.

Our solution is low-risk. We use only well-established mining technologies, and we do not rely on any risky, unproven chemical battery technologies.

Terrament Pitch Deck

Learn More

Terrament is a pre-funded startup based in Brooklyn, NY. We have recently joined the CEBIP accelerator program, and we are currently seeking our first round of investment.About Us

Our long term strategy includes a type of energy storage called underground pumped hydro storage, or UPHS.UPHS Research

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Note: The header video above is merely a collage of relevant technologies and asserts no claims.