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Table 5 Cost model for operating expenditure per year

From: Modeling and economic evaluation of deep geothermal heat supply systems using the example of the Wealden near Hannover, Germany

Energy/resource-related

Energy, €

\({\mathrm{Pr}}_{\mathrm{el}}\cdot \frac{{P}_{\mathrm{hydr}}}{{{\eta }_{\mathrm{motor}}\cdot {\eta }_{\mathrm{isentrop}}\cdot \eta }_{\mathrm{FU}}}\cdot {\mathrm{FLH}}_{\mathrm{gt}}\)

Other operating supplies, e.g., working fluids, disposal costs, inhibitors, fresh/wastewater, and other power consumptions, €

1% of capital expenditures for the relevant items

Operations-related

Own personnel, €

\(\mathrm{220,000}\cdot {e}^{5{\cdot 10}^{-6}\cdot {P}_{\mathrm{th}}\left[\mathrm{kW}\right]}\)

Remote monitoring and standby service, €

25% of own personnel cost

Seismic monitoring, €

60,000

Maintenance and repair wells, €

0.5% of well cost

Maintenance and repair surface facilities, €

3% of capital expenditures for surface facilities

Other

Liability insurance costs, €

90,000

Insurance for electronic and machinery breakdown, €

0.6% of capital expenditure

Administrative costs not yet taken into account (e.g., legal counsel) and public relations, €

25,000