TPI Composites
Manufacturer of composite wind turbine blades for the wind energy market, serving major wind turbine OEMs globally.
- CEO / Founder
- William E. Siwek
- Team Size
- 5001-10000
- Stage
- Acquired
- Total Funding
- $498.9M
- Latest Round
- Strategic Investment
- Key Investors
- Oaktree Capital Management; NGP Energy Technology Partners; Hercules Capital; General Electric
Technology & Products
Key Products
Composite wind turbine blades, blade molds/tooling, field service and repair for wind blades
Technological Advantage
Proprietary SCRIMP (Seemann Composites Resin Infusion Molding Process) vacuum infusion manufacturing process; patented blade mold systems with precision pin/cam positioning.
Differentiation
Value Proposition
Independent, large-scale manufacturer of composite wind blades with a global manufacturing footprint, offering OEMs outsourced blade production and field services.
How They Differentiate
Positions as the only independent, OEM-agnostic composite wind blade manufacturer at global scale, versus vertically integrated OEM in-house blade production.
Market & Competition
Target Customers
Major wind turbine OEMs (e.g. GE, Vestas, Nordex)
Industry Verticals
Wind energy / renewable energy
Competitors
LM Wind Power (GE Renewable Energy); Vestas in-house blade manufacturing; Siemens Gamesa in-house blade manufacturing
Growth & Milestones
Growth Metrics
Historically ~$1.3B net sales, produced 100,000+ wind blades cumulatively since 2001; filed Chapter 11 in 2025, delisted from Nasdaq, emerged under new ownership (Vestas / Energy Capital Partners) in 2026.
Major Milestones
Founded 1968; began wind blade production 2001; IPO on NASDAQ (TPIC) July 2016; produced 100,000th wind blade; filed voluntary Chapter 11 bankruptcy in 2025; delisted from Nasdaq; emerged from Chapter 11 under new ownership (Vestas received equity in TPI Mexico V/VI liquidating plan; Energy Capital Partners took ownership) in 2026.
Notable Customers
GE Renewable Energy; Vestas; Nordex