Breakdown of the installed capital cost for Onshore Wind Farms
Capital cost breakdown for a Typical onshore wind power system and Turbine
ONSHORE WIND FARM PROJECT CAPITAL EXPENDITURE - CAPEX - ESTIMATION
The development of an offshore wind farm normally begins around 5 years before the time when the installation is executed. From the first idea to the start of the project, many procedures, studies and paperwork must be accomplished to ensure the technical/economical feasibility.
These costs are related to:
- Project management (CprojM),
- Legal authorization (Clegal),
- The conducted surveys (Csurveys),
- Engineering activities (Ceng) and
- Contingencies (Ccontingency).
CP&C = CprojM + Clegal + Csurveys + Ceng + Ccontingency
The production and acquisition (P&A) cost includes all costs associated with the procurement of:
- Wind turbines (CWT),
- The support structure or foundation (CSS),
- The power transmission system (CPTS) and
- The monitoring system (Cmonitoring).
|Rotor diameter (D, in m) and RPC (MW)||D = 59.354(RPC)0.47|
|Rotor speed (Rspeed, in rpm) and RPC (MW)||Rspeed = 22.781(RPC)−0.3595|
|Hub height (HH) and rotor diameter (D)||HH = D/0.255(D)0.3464|
|Hub mass including pitch, bearing and driver system (M(pb+ds), in t) and RPC (MW)||M(pb+ds) = 8.6421(RPC)1.1194|
|Rotor mass including hub, pitch system and blades (M(hb+ps+bl), in t) and RPC (MW)||M(hb+ps+bl) = 18.453(RPC)1.1357|
|Mass of main rotor shaft (M(ms), in t) and RPC (MW)||(M(ms)) = 0.2415(RPC)2 + 3.0699(RPC)|
|Mass of main bearing (M(mb), in t) and RPC (MW)||M(mb) = 0.1246(RPC)2 + 1.2623(RPC)|
|Mass of rotor, drive-train support structure and nacelle (M(r+d+n), in t) and RPC (MW)||M(r+d+n) = 37.45(RPC)0.984|
|Mass of all components at top of tower (M(thm), in t) and RPC (MW)||M(thm) = 55.9216(RPC)1.0341|
|Reference: Effect of RPC on size and mass of wind-turbine components (Tong, 2010)|
The installation and commissioning (I&C) phase involves all activities related to the construction of offshore wind farms. The costs incurred at this stage include those related to:
- Port (CI&C-port),
- Installation of the components (CI&C-comp),
- Commissioning of the wind turbines and electrical system (Ccomm), and
- the construction insurance (CI&C-ins).