Know exactly what curtailment cost your plant
When the grid operator curtails your plant, you are entitled to compensation — but the lost energy has to be quantified correctly. Mirox derives it automatically with the settlement methods the regulator prescribes, and gives you the evidence to check the payment.
Lost energy is hard to prove
Under redispatch / feed-in management, every curtailment event means generation you were prevented from delivering. Quantifying that lost energy — and separating it from weather, faults and market-driven caps — is tedious and error-prone when done by hand.
How Mirox calculates the lost energy
Two layers: live detection from the minute-by-minute metric feed, and a settlement figure computed the way the regulator prescribes.
Detect the curtailment live
From the live metric feed, Mirox compares each plant’s expected output — a clear-sky curve scaled by the plant’s own performance ratio — against what it actually fed in, minute by minute, and records every curtailment episode automatically.
Settle it against a reference period
The billable figure follows the regulator’s reference-period method: the nearest curtailment-free day for that plant supplies its own measured production and measured irradiance, and that ratio yields the lost energy for every quarter-hour of the curtailment.
Irradiance from your sensor — or satellite
Both lanes settle identically: Spitz reads the on-site pyranometer, Spitz light uses satellite irradiance data — so a plant with no irradiance sensor of its own is settled just as well.
Attribute it, then price it
The lost energy is split between grid-ordered and marketer-ordered curtailment, then valued in the revenue view: the BDEW blended price plus the foregone market premium under § 13a EnWG for the grid, contract terms for the direct marketer.
What you get
Lost energy per event
Foregone production tracked per minute as both instantaneous power and cumulative energy.
Cause attribution
Grid-operator curtailment cleanly separated from marketer-driven caps and genuine faults.
Shutdown events
Grid and external shutdowns are detected automatically, each with its attributed lost energy.
Audit-ready report
Technical and financial reports as PDF/CSV — the basis to verify what the grid operator owes you.
Provisional or final — with reasons
Every settlement is stamped provisional or final and names the reasons; a figure resting on a reference day with very few usable quarter-hours is flagged as thin evidence.
Portfolio revenue vs. plan
A sweep across every park compares actual revenue against plan and ranks them worst gap first — so you see where the money is missing.
Lost energy, priced out to the euro
The same figures land in the revenue view of every plant you account for in Germany: feed-in valued at market value plus market premium, grid-operator compensation under § 13a EnWG computed on the lost energy at the BDEW blended price plus the foregone market premium, and the direct marketer’s compensation priced per contract segment — per month, per year, down to the quarter-hour.
- Three revenue streams in one view: production, grid-operator compensation, direct-marketer compensation.
- Click any bar to open the 15-minute breakdown behind it — the curtailed slots and every euro leg.
- A side-by-side check of what each settlement method — Spitz, Spitz light, Flat rate — would have earned this period.
- Every delivery month is settled under the rules that governed it — BilAReM (BK6-23-241) since 1 July 2026, its predecessor before that — with nothing for you to switch.
Mirox provides the measurement and the evidence to support your compensation claim. It is a calculation and documentation tool, not legal or regulatory advice.
Frequently asked questions
How does Mirox know how much energy was lost?
Two figures, two methods. Live, Mirox compares measured output against an expected curve minute by minute, so you see the curtailment while it runs. The billable figure follows the regulator’s reference-period method: the nearest curtailment-free day supplies that plant’s own measured production and irradiance, and the resulting ratio yields the lost energy for every quarter-hour of the curtailment.
Can it tell grid curtailment apart from a fault?
Yes. Shortfalls are attributed to their cause — grid-operator curtailment, marketer-driven caps or genuine faults are kept separate.
Do I need an on-site irradiance sensor?
Only for the Spitz method, which reads irradiance from your own pyranometer. Without a sensor, Mirox settles with satellite irradiance data instead (Spitz light) — the same calculation, only the irradiance source differs.
Can I export the results?
Yes — the figures are available as technical and financial PDF/CSV reports you can hand to the grid operator or your accountant.
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