Ess Tech (GWH) Investor presentation summary

Market opportunity and industry trends

• U.S. electricity demand is surging due to hyperscale AI data centers, while coal and gas retirements accelerate the need for new storage solutions.

• Global energy storage is projected to exceed 3 TWh and $713B in value by 2034, with sodium-ion batteries expected to capture over a third of global battery deployment by 2035.

• Sodium-ion offers a cost advantage, superior cold-weather performance, and safety benefits over lithium, unlocking new geographies and applications.

Technology platforms and product rollout

• Two complementary platforms: near-term sodium-ion BESS for short/medium duration and proprietary iron flow LDES for long-duration storage.

• Sodium-ion Bridge™ system is modular, non-flammable, and designed for high-rate cycling in AI data centers, with a 20-year design life and zero thermal runaway risk.

• Iron flow technology uses iron, salt, and water for 10-20+ hour storage, offering lower lifetime costs and 20,000+ cycles over 20+ years.

Commercial momentum and partnerships

• Early-stage sodium-ion opportunities approach $1B, anchored by a 500+ MWh LOI with Juniper Energy and an 8.5 GWh LOI with Alsym Energy for U.S.-made cells.

• Awarded a non-lithium LDES pilot with Salt River Project and Google, with a 5 MW/50 MWh project and potential 200 MW/2 GWh follow-on.

• Active discussions with Tier 1 customers in data center, utility, and critical infrastructure markets.