The day at a glance
Day-ahead hub average by hour ending ($/MWh)
Shaded bands are the bottom quarter, middle half and top quarter of daily hub averages over the last twelve months. Real-time system lambda is drawn beside the day-ahead line once the day has happened.
Expected generation, same hours (GW)
Who is expected to run, by how often it turns off
Thermal units grouped by how often they have turned off on price. Each bar is the group's whole capacity (HSL). The online part is the units expected on, from their minimum output (the dark block, which stays on at any price) up to their maximum, with a tick at the day's expected output. Lighter is expected off, hatched is on outage, and grey is units with too few decision days to judge yet. Daily units are judged on their cutoff, the day-ahead stay-on loss above which they turn off when they hold no award; seasonal and multi-day units on the month's price level; peakers on their history at this price level and hour. Nuclear sits in the never-off group.
Who is expected to run, by technology
The same units and the same method, cut by technology. Hover a bar for the unit counts and the reasons behind the verdicts. Wind and solar bars run to nameplate: solid is expected dispatch, lighter is available but priced out at its own node, hatched is not available from the weather.
Expected generation by hour
Each unit's verdict carries the hours it would be off, so the expected mix is laid out hour by hour: thermal by group, with the dashed line marking the committed minimum output that stays on whatever the price, then wind and solar from their forecasts less what prices itself out at its node. Batteries are drawn on top (discharging) and below zero (charging) once the battery data is loaded. The shaded hours are the day's cheap stretch. Once the 2-day generation summary is out, its actual thermal, wind and solar are drawn as lines over the forecast.
How this day went
The forecast scored against the day's reports: the 2-day generation summary two days on (thermal, wind and solar energy over the day) and the per-unit 60-day disclosure sixty days on (each group's energy, and whether each unit's on or off call was right). These are the same scores the model gate uses.
The day in detail
The hour below applies to the generation mix, the price duration dot and the hourly view of the units table.
Generation mix
Expected output by technology in the hour, from the forecast file. Once the 60-day disclosure is out, each bar carries a tick at the measured output; with only the 2-day summary, the ticks are its thermal total, wind and solar.
Table view
Price duration
Hourly prices across every loaded day, highest to lowest. The dot is the selected hour and the short marks are the rest of its day.
Units
One row per thermal train with its verdict for the day and the reason behind it. Loss is the day-ahead stay-on loss, the worst contiguous window of running at minimum output against the unit's own node price; cutoff is the loss above which this unit has turned off when it held no award. Once the 60-day disclosure is out, the table adds the hours the unit was actually online and whether the call was right. Click a column to sort.