The C1 Wedge Connection™

Lowering the cost of energy
and increasing safety

Rethinking connections

The innovative new standard

The C1 Wedge Connection™ is a wind turbine and foundation interface connection. The technology is fully certified by DNV and has a proven track record of more than 2 years in one of the world’s largest turbines. It can deliver an ultimate and fatigue resistance that outperforms all bolted flange connections.

C1 Wedge Connection components

Start designing your own C1 Wedge Connection

C1 Connections has developed an analytical design tool. This tool enables anyone to make a design for a C1 Wedge Connection with only a few input variables. 

C1 Wedge Connection Design Tool

Two years track record in one of the world’s largest wind turbines

Pushing boundaries

The C1 Wedge Connection™ supports the use of large wind turbines both offshore and onshore.



Using the existing supply chain for flange production

Your benefits

when using the C1 Wedge Connection

Using the C1 Wedge Connection as a wind turbine interface offers several benefits.

The connection has a high ultimate and fatigue capacity, lowers CAPEX, and increases safety during installation.

Next Generation Wind Turbine featuring the C1 Wedge Connection

What we can do for you

We supply fasteners and tools for the C1 Wedge Connection™, and provide assistance with the design and fabrication of the connection.

Learn more about

The technology
The product
The benefits