Build to Zero provides the ThermalBox®, a modular heat‑battery system that stores renewable electricity as thermal energy and delivers 24/7 emission‑free steam below 400 °C for industrial processes. By replacing fossil‑fuel boilers, it offers continuous low‑temperature heat, reduces operating costs, and enables medium‑low temperature sectors such as chemical, food, paper, and mining to decarbonize their operations.
Funding
$2.7M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
EAFounders
Product
Problem
Industrial processes that require medium‑low temperature heat (below 400 °C) rely heavily on fossil‑fuel‑based steam generation, leading to high CO₂ emissions and limited flexibility in energy sourcing. Transitioning to renewable electricity for heat is difficult because continuous, reliable heat supply and storage are needed for 24/7 operation.
Solution
Build to Zero offers the ThermalBox®, a heat‑battery system that generates emission‑free industrial heat by coupling renewable electricity with thermal energy storage. The unit stores heat electrically and releases it as steam on demand, providing consistent temperatures for processes such as steam‑based heating, drying, sterilization, and leaching. By replacing fossil‑fuel boilers, the ThermalBox® enables continuous, low‑temperature heat supply while reducing operating costs and carbon footprints. The technology can be customized for various sectors, allowing a direct substitution of existing steam infrastructure with a renewable‑based solution.
Target Audience
Primary customers are process‑intensive manufacturers in the chemical, food & beverage, paper & packaging, and mining sectors that currently use fossil‑fuel steam for heating, drying, and purification.
Features
- Electrically charged thermal storage delivering up to 24 h of continuous steam at temperatures below 400 °C
- Modular design that can be sized to match specific process heat demand and integrated with existing steam distribution systems
- Compatibility with renewable electricity sources (solar, wind, grid) for fully decarbonized operation
- High round‑trip efficiency optimized for medium‑low temperature applications, improving overall energy utilization
- Plug‑and‑play installation requiring minimal plant modifications and no on‑site combustion equipment