Adding underground excavation costs
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Plavit commented
Rates for usage proposal - 2022 in USD per meter:
https://www.mgvcl.com/Upload/Cost%20Data/Cost%20Data%202022-23/labour%2022-23%20for%20UG%20cable.pdf
Context for underground vs overhead:
https://www.power-grid.com/td/underground-vs-overhead-power-line-installation-cost-comparison/
Literature:
- Benato, R. and Napolitano, D., 2012. Overall cost comparison between cable and overhead lines including the costs for repair after random failures. IEEE transactions on Power Delivery, 27(3), pp.1213-1222.
- Bumby, S., Druzhinina, E., Feraldi, R., Werthmann, D., Geyer, R. and Sahl, J., 2010. Life cycle assessment of overhead and underground primary power distribution. Environmental science & technology, 44(14), pp.5587-5593.
- Bascom, E.C. and Antoniello, V.D., 2011, November. Underground power cable considerations: Alternatives to overhead. In 47th Minnesota Power Systems Conference (MIPSYCON) (pp. 1-3).