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Overview
Terrajoule provides a dispatchable solar energy and storage system for industrial and agricultural customers as an alternative to diesel generators and PV+battery setups. Its DG-S platform uses concentrated solar power with parabolic troughs to generate steam, which drives a Skinner Universal Unaflow steam piston engine connected to an AC generator for on-demand electricity. Thermal energy is stored in large insulated pressurized water tanks, enabling 24/7 operation without relying on lithium batteries. The system targets on-site, off-grid or grid-adjacent installations with multi-million-dollar capital costs; the company was founded in 2009 by Stephen J. Bisset and later restarted after acquiring the original IP, but is noted as out of business around 2019–2021.
About Terrajoule
Industries
Hardware
Industrial & Manufacturing
Energy
Company Size
1-10
Company Stage
Series A
Total Funding
$11.5M
Headquarters
Palo Alto, California
Founded
2009
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Simplify's Take
What believers are saying
- August 7, 2026 website signals active branding and continued technology positioning.
- December 2025 Rice license gives Terrajoule a fresh non-solar commercialization path.
- ECT raised A$3 million in January 2026, funding near-term development work.
What critics are saying
- ECT bought Terrajoule on December 24, 2025; independent solar commercialization is gone.
- ECT’s filings show no material revenue and a $2.58 million half-year loss.
- A failed 2026 soil-remediation milestone kills the 24-month performance-right payout and value.
What makes Terrajoule unique
- Terrajoule’s DSM stores heat in steel vessels, avoiding lithium-ion degradation.
- August 2026 website still markets 24/7 dispatchable solar with 25-year lifespan.
- December 2025 ECT acquisition added Rice University REM licensing infrastructure.
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Funding
Total Funding
$11.5M
Below
Industry Average
Funded Over
1 Rounds
Industry standards
Company News
Environmental Clean Technologies Limited ( ($AU:ECT) ) has shared an update. Environmental Clean Technologies Limited has announced a significant acquisition of Ter...
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About Terrajoule
Industries
Hardware
Industrial & Manufacturing
Energy
Company Size
1-10
Company Stage
Series A
Total Funding
$11.5M
Headquarters
Palo Alto, California
Founded
2009
There are no jobs for Terrajoule right now.
Find jobs on Simplify and start your career today