Customer Story
Battery storage for the most sustainable distribution center in the Netherlands
Veghel
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When day-ahead prices are negative, your facility continues to feed power into the grid as usual—and you pay per kWh. Covolt automatically adjusts your output, quarter-hour by quarter-hour.
What is curtailment?
When there is an oversupply on the power grid, EPEX spot prices drop to zero or below zero. Your system will still feed power into the grid—and as the owner, you’ll be responsible for the costs.
Request a free analysis →On the EPEX spot market, day-ahead and intraday prices are traded on a quarter-hourly basis. When there is an oversupply, these prices fall below zero. Anyone feeding power into the grid at that time pays instead of earning.
Green energy certificates compensate you for your production—not for your feed-in during negative-rate periods. The feed-in cost is a separate expense, in addition to the loss of the certificate compensation after 2027.
By scaling back your production to match your own consumption during negative quarters, you can completely eliminate the feed-in cost—without any loss of production during positive quarters.
How does it work?
Covolt connects to your inverter or EMS and controls it based on price signals—without any manual intervention.
The Covolt Horizon platform retrieves daily and intraday prices from EPEX. Every 15 minutes, it determines whether feeding power into the grid will cost you money.
Based on your own consumption, the price signal, and your system, Horizon calculates the optimal power output in real time.
Covolt controls your inverter or EMS via API or a local gateway. The system switches back without manual intervention, within seconds.
Each event is logged with the time, power, and avoided cost—live on the Horizon dashboard and in monthly reports.
in avoided injection costs per year
The exact amount depends on your connected capacity, self-consumption profile, and the number of quarter-hours with negative prices. Covolt calculates it based on your feed-in quarter-hour data—free of charge and with no obligations.
Who is this for?
Covolt works exclusively with business clients—not individuals. This ensures that we have a thorough understanding of your network environment, rate structures, and certification system.
Starting in 2027, green energy certificates for this category will be phased out entirely. Curtailment eliminates the additional feed-in costs on top of that loss—the only cost you can still influence.
GSC rules are changing less drastically, but negative price spikes are becoming more frequent. Curtailment protects your margins quarter by quarter.
For smaller installations, asset monitoring is the most relevant service. Covolt monitors your production, detects malfunctions early on, and optimizes output.
Why Covolt?
Covolt is not just another energy management company. We are built for commercial and industrial facilities—with the depth of expertise that comes with it.
Certified by Elia & VREG as an independent aggregator. Full compliance with the Belgian regulatory framework.
No daily averages, but actual 15-minute data—the same level of granularity used by the grid operator.
Live dashboard showing power output, revenue, curtailment events, and avoided costs. Always stay informed, on any device.
No call center—just a dedicated contact person. Consistent response times and automated reports.
Covolt uses open standards. You retain full control over your system and data.
Free Estimate
We need your injection quarter data—available from your grid operator or EMS. Please provide your information, and we'll contact you within 24 hours with the calculation.
