enerlyzer
Methodology
How We Calculate the Metrics
Negative Price Hours
Hours where the day-ahead electricity price falls below €0/MWh.
Neg Hours = Σ (hours where Price < 0)
For 15-minute resolution data, each interval counts as 0.25 hours.
Average Market Price
The arithmetic mean of all day-ahead hourly prices in the selected period.
Avg Price = Σ(Price) / Count(Hours)
Capture Price
The volume-weighted average price received by solar generators.
Capture Price = Σ(Generation × Price) / Σ(Generation)
Capture Price (Floor €0)
Same as Capture Price, but negative prices are floored at €0.
Capture Floor = Σ(Generation × max(Price, 0)) / Σ(Generation)
Capture Rate
The ratio of Capture Price to Average Market Price.
Capture Rate = (Capture Price / Avg Market Price) × 100%
Solar Volume at Negative Prices
Percentage of solar generation during negative price hours.
Solar @ Neg = (Gen during neg hours / Total Gen) × 100%