Page 69

8 PATHWAY ANALYSIS AND FINDINGS 8.1 Innovative transportation pathway Although physical constraints related to road and rail infrastructure will continue to challenge the feasibility of ground-based transportation of supersized blades, innovation opportunities remain within the transportation sector. The challenge with achieving transportation innovations is related to market scale and timing needed to spur investment in new trailers, rail cars, or other equipment. Both “Constrained” and “Unconstrained” monolithic blade configurations were evaluated to determine transport feasibility, costs, and areas of innovation that could enable supersized blades.

8.1.1 Truck and rail findings Figure 8-1 and Figure 8-2 summarize the transportation cost estimates developed for truck and rail delivery of monolithic blades to the Montana and Michigan project locations, respectively. As noted earlier, these estimates derive in large measure from wind industry rail and road transport experts. Blue bars indicate the transportation portion of the total cost of delivered blade target values previously described in Section 7. Values exceeding the blue bars will increase the system-level LCOE, while values lower than the blue bars will contribute to decreases in system-level LCOE. The truck and rail findings apply to blades with chord and root dimensions at or within the design constraints. Blades with unconstrained chord and root dimensions were not transportable by truck or rail.

8.1.1.1 Transporting 65 m monolithic blades Transportation of 65 m blades by rail and truck was deemed feasible to both project locations. This finding is consistent with current market and industry capabilities. While 65 m blades are transportable over wide geographic regions across the central U.S., some route constraints over the Rocky Mountains and along the East Coast would add to logistic costs and could limit delivery to certain project locations. As illustrated in Figure 8-1 and Figure 8-2, long haul truck costs for 65 m blades are slightly more expensive than the combination of rail plus short haul trucking. Rail can offer transport cost efficiency, avoidance of long escorts, and reduced local jurisdiction permitting costs.

DNV GL – Document No.: 10080081-HOU-R-01, Issue: C, Status: FINAL www.dnvgl.com

Page 48

Profile for DNV GL

Supersized wind turbine blade study  

R&D pathways for supersized wind turbine bladesSupersized wind turbine blade studyLawrence Berkeley National LaboratoryDocument Number: 1008...

Supersized wind turbine blade study  

R&D pathways for supersized wind turbine bladesSupersized wind turbine blade studyLawrence Berkeley National LaboratoryDocument Number: 1008...

Profile for dnvgl