About the Curtailment Recovery

Curtailment recovery calculates the solar energy forcibly curtailed by a grid operator (due to grid instability, transmission constraints, or over-generation events) and evaluates whether BESS can store and re-dispatch that curtailed energy to reduce curtailment losses.

How to calculate it

1. 1Obtain curtailment data from your SCADA or DISCOM grid-curtailment notifications — hours and kWh curtailed.
2. 2Model the grid constraint: what times of day, what durations, how predictable.
3. 3Size BESS to absorb the curtailed energy during the curtailment window and discharge after.
4. 4Verify the discharge can be scheduled into an uncurtailed window (typically evening or off-peak).
5. 5Calculate payback: BESS capex ÷ annual recovered revenue.

Worked example

A 5 MW plant curtailed 4 hours/day during monsoon midday for 3 months = ~1,800 MWh/year curtailed. At ₹3/kWh PPA, ₹54 L/year of revenue lost. A 20 MWh BESS (₹8 Cr) could recover most of this → simple payback ~15 years at current BESS costs, marginal at ₹3/kWh — recovery becomes viable only if curtailment is severe or storage costs fall further.

What you can calculate

• MWh recovered
• ₹ revenue
• Curtailment %
• India RE zones

Frequently asked questions