investor tool

IRR, NPV and LCOE calculator

A preliminary assessment of RES project profitability before due diligence. Results are indicative; a full financial and legal analysis of the project is recommended before making an investment decision.

Calculate project returnsIRR, NPV and simple payback from your inputs, recalculated after every change.

Estimate the cost of energyLCOE in PLN/MWh, for comparison with a PPA price or a URE auction price.

Compare technologiesPV, wind and BESS presets, with annual net cash flow over the full operating life.

Project inputs

Enter inputs using the listing data.

Installed capacity (MW)

DC capacity for PV, rated capacity for wind. For BESS, use energy capacity in MWh.

CAPEX (PLN/MW)

Total construction cost per MW of capacity. For BESS: PLN/MWh of energy capacity.

Annual generation (MWh/MW)

PV: 950–1100; wind: 2500–3500. For BESS: annual discharged energy per MWh of capacity, before degradation and curtailment (MWh/MWh/year).

Electricity price (PLN/MWh)

PPA, URE auction or TGE wholesale market

Annual OPEX (% of CAPEX)

PV ~1.5–2%, wind ~2.5–3.5%, BESS ~2–3%

Operating life (years)

PV/wind: typically 25 years; BESS: 10–15 years

Projection results

Results update whenever assumptions change. Cash flow is shown at full net values.

Project IRR

rate of return

NPV @ WACC

PLN million

LCOE

PLN/MWh, energy cost

Simple payback

years

Annual cash flow net, after tax

Year	Revenue	OPEX	Charging cost	Net cash flow	Cumulative

Method: IRR and NPV use annual cash flows after modelled tax, with residual value at the end. Simplified LCOE/LCOS = CAPEX plus discounted OPEX and charging costs, divided by discounted discharged energy; this indicator excludes income tax, financing and residual value. An unavailable IRR means that the supported model has no unambiguous result, including cash flows with more than one sign change.

Disclaimer. The calculator serves only a preliminary assessment of a project. The results rest on a simplified model (annual cash flows with indexation and degradation, a single taxation mode, no debt with a separate rate). A full financial projection requires a DCF model that accounts for the debt structure, the seasonality of generation, regulation (URE, REMIT, the Wind Farm Investments Act) and PPA clauses. The platform operator and HWW Hewelt Wojnowski Lindner i Wspólnicy sp.k. accept no liability for investment decisions taken solely on the basis of the calculator's result.