Inputs
OPEX, revenue and penalties Annual O&M and its escalation, the PPA tariff and shortfall penalty, the CUF cap, 3rd-party export pricing, grid charging, and the Optimise target IRR.
The 📊 OPEX tab sets the plant's operating cost, the tariff and penalty
that drive its revenue, the price paid for any 3rd-party export, the terms
under which the battery may charge from the grid, and the target
⚙ Optimise searches for.
The OPEX tab Field Default Range What it does Solar O&M 3.0 Lac/MW/yr ≥ 0 Lac/MW/yr Solar annual O&M cost per MW Wind O&M 5.0 Lac/MW/yr ≥ 0 Lac/MW/yr Wind annual O&M cost per MW BESS O&M (fixed) 5.0 Lac/yr ≥ 0 Lac/yr Fixed annual BESS O&M cost OPEX Escalation 2.0%/yr 0–20%/yr Annual escalation applied to all O&M
Field Default Range What it does PPA Tariff 5.0 Rs/kWh ≥ 0.1 Rs/kWh Contracted tariff for delivered energy Penalty Multiplier 1.5× tariff 0.0–3.0× tariff Penalty rate applied to DFR shortfall, as a multiple of the PPA tariff Apply Annual CUF Cap (checkbox)off — Enables an annual offtake ceiling; energy above it is paid at the Export Price instead of the PPA tariff % (of CC × 8760) (with the CUF-cap checkbox)28.0% 0.0–100.0% The CUF ceiling itself, disabled unless the checkbox is ticked
Field Default Range What it does Export Price mode (Fixed Price / CSV (15-min pricing) ) Fixed Price Fixed Price , CSV (15-min pricing) Chooses whether the 3rd-party export price is one fixed number or a 15-minute pricing series Value (Fixed Price)0.0 Rs/kWh ≥ 0.0 Rs/kWh Flat 3rd-party export price 📂 Browse CSV… (CSV pricing)status No file loaded ; unit combobox defaults Rs/MWh 35,040 or 8,760 rows (hourly auto-interpolated), price column auto-detected (mcp/price/clearing/tariff/rate/rs, else the last numeric column) 15-minute export-pricing time series (for example an exchange clearing price), converted to Rs/kWh internally when the unit is Rs/MWh
Field Default Range What it does Grid Charging Price 0.0 Rs/kWh ≥ 0.0 Rs/kWh Price paid for grid energy used to charge the battery — always, on a Standalone project; as a backup only, on a generation-backed one Grid charging backup when generation is short (checkbox)off; disabled and forced off for Standalone BESS — Lets a generation-backed plant top up from the grid on low-irradiance or low-wind days Max Grid Charge Limit 100% 0.0–100.0% Caps how much of the battery's usable capacity the grid may supply per charge cycle — 100% is unrestricted
Field Default Range What it does Project Target IRR 15.0% no explicit bound; falls back to 15% if the entry can't be parsed Target project IRR the ⚙ Optimise search — and its "Hits Target IRR" scenario — aims for
