Overview
Mainspring Energy makes fuel-flexible, low-emissions Linear Generators for onsite and grid power. Headquartered in Menlo Park, California, it began commercial shipments in 2020 and sells to commercial, industrial, data center and utility customers.
Reality check
AEP agreement (company-claimed, Oct 2026)
Up to 1.6 GW of Mainspring Linear Generators for AEP through 2034; AEP bought a first 190 MW tranche for delivery beginning in 2027. Largest linear generator procurement to date.
Installed base (company-claimed)
Commercial shipments began in 2020; more than a gigawatt in advanced development and field operations for Fortune 500 companies, data centers and utilities.
Verified record
- Verified deployments
- None on file
- Active incidents
- None on file
Data & sources
Web sources
3
3 sources backing this record.View all →
Partnerships
Every company Mainspring Energy has built with, alongside the ones only announced in a press release.
Most-frequent partners
- 1American Electric Power1× joint
Most recent
- with American Electric Poweroperating
Relationships
Safety record
No incidents on record for Mainspring Energy.
Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.
Full safety record: incidents, sourcing, and exposure data →
Partnerships
1 total · 1 operating
Every company Mainspring Energy has built with, alongside the ones only announced in a press release.
Most recent
- with American Electric Poweroperating
Most-frequent partners
- 1American Electric Power1× joint
Recent activity
Every change to this record is dated, sourced, and independently verified where marked.
- Record createdOct 15, 2026
Added to the verified registry
Sources (3)
- https://www.mainspringenergy.com/news/mainspring-energy-signs-landmark-1-6-gw-agreement-with-aep-for-reliable-affordable-power-capacity · 2026-10-13
- https://www.prnewswire.com/news-releases/mainspring-energy-signs-landmark-1-6-gw-agreement-with-aep-for-reliable-affordable-power-capacity-302906235.html · 2026-10-13
- https://x.com/TheLastMegawatt/status/2110474842579607772 · 2026-10-14
Common questions
What is Mainspring Energy?
What does Mainspring Energy make?
Is Mainspring Energy publicly traded?
How can I invest in Mainspring Energy?
Where is Mainspring Energy headquartered?
Who owns Mainspring Energy?
Is Mainspring Energy a top robotics company?
Is Mainspring Energy safe?
Methodology: Unreviewed · 3 sources (no primary) · last reviewed 2026-10-15
Verification posture
Unreviewed
Low confidence
Review state
Stable
Last reviewed 2026-10-15
Sources by quality tier
- 3
- unclassified
- Unclassified source
The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.
Methodology surface for Mainspring Energy.Machine-readable surfaces
- Markdown mirror: /companies/mainspring-energy.md
- RSS feed: /companies/mainspring-energy/feed.xml
- JSON-LD: embedded in this page’s head
- REST API: /v1/companies/d8fb83e6-5f3d-42ad-95e5-59a2e680ace5
- Revision history: /companies/mainspring-energy/history
- Data documentation: /data
- Query this programmatically: Deploy MCP
Reality vs attention
Not enough verified signal yet to place Mainspring Energy against peers. Reality and attention percentiles publish once the underlying record clears its data floor.
6-month trend
Analysis
Limited public visibility and press coverage relative to peers.
Dimension breakdown
Verified signal
Attention (reach, not merit)
DEPLOY Intelligence scores are computed from verified registry data: confirmed deployments, disclosed funding rounds, regulatory filings, active job listings, video viewership, and press coverage. Confidence ratings reflect data availability. Scores update nightly.
DEPLOY Indices — verified vs claimed
Last computed: Oct 26, 2026