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How much could curtailment be worth on your site?

The Curtailer pauses solar export the moment day-ahead price drops below a threshold you choose - so you stop paying to feed the grid. Pick a price limit to see how often that would have triggered on recent prices, and describe your plant for an estimated euro figure. No account needed.

Examples:
Agro-horti · 380 kWp C&I rooftop · 210 kWp Standalone · 1.2 MWp

Price limit

A curtailer pauses export when the price drops below this limit - it isn't worth feeding power to the grid below it. Defaults to €0.015 (1.5 cents), the price ANWB Energie pays for feed-in* - excluding VAT.

* The price ANWB Energie pays for feed-in, excluding VAT - your own contract's feed-in tariff may differ.

Monthly totals

kWh view: exported generation stacked with curtailed generation (the sum is gross production). EUR view: net revenue without vs. with curtailing, side by side.

Estimated net profit from curtailer

€11.82k / year

The Curtailer pays for itself in less than 1 month.

~729 full load hours are produced after curtailment.

Based on:

Simulation window
Rolling year
System size
1200 kWp
Orientation
South
Price limit
€0.0150/kWh
Learn more:

Simulation window

Rolling year simulates the last 365 days (excluding today, often incomplete). Picking a specific year simulates that full calendar year instead.

System size

Your solar system's nameplate (peak) capacity.

Orientation

Basic mode assumes one dominant orientation at a typical roof tilt. Switch to advanced mode to describe individual strings with their own azimuth and tilt.

Detailed results

Yearly

Period Gross production Net production Curtailed
Rolling year 1329.99 MWh 874.88 MWh 455.12 MWh (34%)

Results per month

Month Days Net revenue without curtailer Net revenue with curtailer Curtailed of produced
August 2025 20 €3.42k €3.79k 29.42 MWh of 98.87 MWh
September 2025 30 €3.79k €4.62k 47.41 MWh of 122.72 MWh
October 2025 31 €3.15k €3.29k 9.92 MWh of 60.52 MWh
November 2025 30 €3.54k €3.54k 28.5 kWh of 44.45 MWh
December 2025 31 €2.32k €2.32k 2.1 kWh of 33.39 MWh
January 2026 31 €3.92k €3.92k 6.3 kWh of 41.61 MWh
February 2026 28 €3.50k €3.52k 2.31 MWh of 51.85 MWh
March 2026 31 €5.33k €5.83k 39.93 MWh of 134.16 MWh
April 2026 30 €1.24k €5.83k 96.98 MWh of 178.18 MWh
May 2026 31 €3.29k €6.33k 79.96 MWh of 164.61 MWh
June 2026 30 €7.91k €8.64k 40.88 MWh of 155.57 MWh
July 2026 31 €7.00k €8.07k 73.16 MWh of 176.85 MWh
August 2026 11 €2.14k €2.68k 35.10 MWh of 67.22 MWh
Total 365 €50.56k €62.38k 455.12 MWh of 1329.99 MWh

About this simulation

Assumptions

Weather station used
De Bilt
Estimated system size
1200.00 kWp
Simulation window
rolling year, 365 days with data

All simulations use weather data from De Bilt - the public simulation tool doesn't yet support other locations, so results may differ from your actual site.

Based on real KNMI 10-minute weather (irradiance and temperature) for the station above, and a pvlib/PVWatts solar-position model - not a precision instrument: it uses a simplified (isotropic) sky-diffuse model, a flat system-loss allowance, and no per-module datasheet. Savings and net revenue are both netted against your price limit - as if it were the reference rate you're paid per kWh - so a negative price contributes more than a price just below the limit.

Disclaimer

This simulation tool is provided for illustrative purposes only. It is not financial, legal, or engineering advice, and Enewe BV gives no warranty as to the accuracy, completeness, or fitness for any purpose of the figures shown.

Actual solar generation, curtailment behavior, and revenue depend on your specific installation, module and inverter characteristics, shading, local grid conditions, your energy contract's terms, and future market prices - all of which may differ significantly from the assumptions used here. Historical weather and price data are not a guarantee of future results.

No rights, guarantees, or contractual commitments can be derived from any figure shown by this tool. See "About this simulation" for the specific weather station, modeling assumptions, and known limitations behind these figures.

Daily curtailment statistics

Interesting days:

On this single day you would have profited €0.00 by curtailing 0.0 kWh of the gross 131.4 kWh production.

Amber shading marks curtailed production - intervals where the price was below your limit.

Ready to put these savings to work?

Order The Curtailer for your own site - DIY install, installer install, or full service.

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