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- The challenge: Managing risk in short-term markets
- The solution: Solar Power Forecast with Near-time add-on
- The results: Greater accuracy, lower balancing costs
PowerField develops and operates solar parks across the Netherlands, with more than 300 MW in operation, including sites paired with battery storage. The company also trades directly in day-ahead and intraday markets and operates as a Balancing Service Provider (BSP).
For Eelco Rondhuis, Head of Energy Management, the mission is clear:
“We optimize the energy flow through our solar parks and batteries to get the most value out of every megawatt.”
The challenge: Managing risk in short-term markets
Managing a solar portfolio of this scale requires precise generation forecasts. Even small deviations between expected and actual solar output can quickly translate into costly imbalance positions.
Eelco Rondhuis explains:
“We can always curtail if we need to, but we can’t create energy out of thin air. What we really don’t like are unforeseen shortfalls.”
Thus, their priority was to find power production forecasts that could provide both consistency and responsiveness to real-time asset conditions.
The solution: Solar Power Forecast with Near-time add-on
PowerField adopted Dexter Energy’s Solar Power Forecast to support position management across its portfolio.
More recently, the team added our Near-time feature, which continuously ingests live production data, curtailment signals, and SCADA measurements through an API. Combined with the latest weather data, this feedback loop refines the 0–6 hour view and corrects for on-site conditions such as inverters starting up slowly or assets under maintenance.
Eelco describes his overall experience:
“The forecast adjusts instantly to what the system sees on the ground. That makes a huge difference. “
The integration was smooth. PowerField’s team uploads production and curtailment data directly to Dexter’s API, with clear guidance and quick support from Dexter’s team when needed.
“The setup time was really short. The technical documentation provided everything we needed, and whenever a question came up, the team was there with the answers. They also pointed out how important data quality is. It’s something to keep in mind; the forecast can only be as good as the data you feed into it.”
The results: Greater accuracy, lower balancing costs
Since implementing Dexter’s Solar Power Forecast, PowerField has seen measurable improvements in its trading operations:
Eelco explains:
“The trading results have definitely improved – our intraday balancing is much closer to actual production.”
On position management, he adds:
“The better we see where we expect our production to be, the more confident we feel in trading our assets. We can execute more effectively in the intraday market.”
Finally, he particularly values consistency:
“Energy trading is not about having one good day and one bad day. You really can’t afford bad days. What we value in Dexter is the consistency. Every new feature or add-on has the same quality standard, and that reliability is crucial for us.”
The partner behind the product
Beyond the technical results, Eelco Rondhuis highlights the working relationship with the Dexter team:
“It’s a joy working with the people at Dexter. There’s a lot of diversity and a willingness to bring the product further. If we have new ideas, there’s always someone at Dexter ready to listen and explore what’s possible.”
For PowerField, that collaboration helps ensure they can continue optimizing their solar and battery portfolio while keeping risks under control. And for us at Dexter, it reflects a shared mindset: innovation, reliability, and making every megawatt count.