Appendix B- STFT as an energy node

Projekt:

Sea Tech Floating Terminal (STFT)

Sammanfattning:
The new ways of producing electric energy by large scale wind farms will require offshore energy hubs – HVDC substations. The idea of using the STFT floating transhipping terminal for this purpose is not farfetched. In shallow waters, i.e. water depth of 50 – 70 meters the existing solutions are mature and perfectly dimensioned for the purpose of the planned windfarm. A safe distance between floating transhipping platform STFT to windfarms is about one nautical mile. An inter-array cabling from a wind farm to an offshore HVDC substation of one nautical mile is not a problem.
For its own need, the transhipment platform STFT will most likely be run on electricity from gensets, initially on MDO and later on green diesel fuel when available in quantities.
The upcoming and promising Small Modular Reactor (SMR) are probably not to be installed in the STFT of safety reasons, at least not for any years.In the future at later stage, the separate floating terminal STFTe with the sole purpose of producing, collecting and distribute energy will supply the transhipment platform with
electricity from Small Modular Reactors (SMR). Then it is most likely beneficial to give such a platform surplus capacity for delivery to the coast. If wind farms or wave plants are nearby,
STFT can be used as a complete energy node collecting electricity from wind farms and wave farms and by transformation equipment make distribution to consumers most efficient.
However, of economic reasons this must be planned in good time so that investments will be operated without much delay.
This analysis is motivated by the need of fully understand the societal expectations and the business environment that STFT and STFTe will meet in the effort to contribute to a sustainable society.

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Författare: Anders Ulfvarson
Utgivare: Chalmers
Utgivningsdatum: 2024-08-30
Diarienummer: TRV 2022/108064
Antal sidor: 25
Språk: Engelska
Kontaktperson: Charlott Andersson, PLa1us