Revenue Approximation
Sizing Approximation
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The Sizing Approximation shows which storage duration maximises IRR for a given grid connection point and market configuration — based on live market data.
What's included
IRR comparison across durations 0.9h / 1.5h / 2h / 4h
Sensitivity to market price assumptions (optimistic / base / conservative)
CapEx breakeven analysis: above which CapEx does which duration make sense?
FCA impact on the optimal sizing decision
Recommendation for Standalone vs. co-location per duration
Inputs
Available grid capacity (MW)
Target market (DE, AT, FR, …)
CapEx assumption (€/kWh) — or range
FCA type (if known)
Outputs
IRR per duration in a comparative view
Optimal duration recommendation with rationale
CapEx sensitivity: delta IRR per €50/kWh CapEx variation
Summary of duration implications for ancillary service markets
For whom
Project developers at early stage when storage size is still open
Model your own projects
Apply the methodology directly to your projects — with personalized scenarios, site parameters, and auditable results.