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Igor Sabodakha

Wind Farm Investment Calculator · Sources

Sources of the wind farm model

The base case rests on 32 public sources, all checked on 30 Sept 2026. Each entry shows the date of the source and the inputs it supports. Where no current public value exists, the input is a documented assumption — listed at the end. How the inputs are used is described in the methodology.

Tenders and the EEG

Power prices and market values

Costs, site and energy yield

Financing

Tax and VAT

Inflation and valuation

Assumptions

These inputs have no current public value that fits the case. The base case uses a documented assumption, often next to a public reference point; the tornado and the scenarios show how much each one matters.

Project & timeline
Number of turbines; Financial close
Energy yield
Other extra losses; Uncertainty, 1 year; Uncertainty, 10 years; Output at negative prices
Revenue (EEG & market)
Long-term power price; Wind capture factor; Direct-marketing fee; Receivable days; Continue § 6 payment after the EEG
Capex
Other capex; Contingency; VAT refund lag
Opex
Maintenance (years 21+); Management (years 21+); Insurance (years 21+); Other opex (years 21+); Land lease; Minimum lease per turbine; Decommissioning cost; Guarantee fee
Financing
Target DSCR (P50); Target DSCR (P90); Revenue the bank counts on; Lock-up DSCR; Covenant DSCR; Upfront fee; Equity first
Tax
Trade-tax multiplier (Hebesatz)