Research
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European TSOs and energy traders use six standardized metrics (nRMSE, MAE, CRPS, bias, skill scores, and spatial-aggregation effects) to judge renewable forecast quality across wind and solar portfolios.
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Each metric captures a specific aspect of performance. nRMSE and MAE quantify point accuracy, CRPS assesses probabilistic calibration, bias reveals systematic directional error, skill scores benchmark against references like…
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Better values on these metrics reduce imbalance penalties and balancing costs for BRPs that operate onshore wind, offshore wind, and solar PV assets in European day-ahead markets.
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Forecast accuracy depends on technology and horizon. Day-ahead nRMSE, MAE, and CRPS values shift with season, geography, and lead time, while portfolio aggregation adds further error reduction.
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Schedule a live benchmark with Jua to compare EPT-2 and EPT-2e against ECMWF models on your own region and variables using all six metrics in seconds.
Discover the 6 metrics — nRMSE, MAE, CRPS & more — European TSOs use to evaluate renewable forecasts, and how Jua helps BRPs cut balancing costs.