The main differences between bottom-fixed and floating solutions
A wind turbine can be installed offshore by two different methods: on a platform connected to the seabed (called a "fixed" foundation) or on a floating foundation simply attached to the seabed by mooring lines to hold the assembly in position.
At water depths greater than 35 to 40 metres, the bottom-fixed wind turbine is no longer economically competitive. In contrast, floating wind power, conceivable even from depths of 30 metres thanks to the Ideol foundation, has no limits.
The advantages of offshore floating wind power
Unlike bottom-fixed wind turbines, the floating turbine and especially the Ideol foundation :
- enables stronger and more constant offshore wind to be used to its benefit, thus reducing energy production costs
- enables simplified and more economical wind turbines to be installed quayside before towing
- greatly limits the environnemental impact : reduced impact on the coastal landscape, decommissioning without any component left on the sites
Key issue: reducing the costs while maximising local benefits
At a time when a number of countries are defining ambitious objectives for renewable energy, the question of cost is becoming a key issue for offshore floating wind power. Ideol anticipated this from the outset by developing and patenting a technology that is both technically reliable and economically competitive.
The Ideol foundation has helped overcome the main economic, logistic and port-related constraints of competitive floating solutions and is the biggest creator of jobs around the installation sites.