Earth Notes: Heat Battery Grid Top-up Maximum

(See the control parameters, logs, dataset and backstory.)

This page shows the maximum percent-full to top-up to from the grid, if any, for the DHW heat battery.

Diversion plus top-up today: 1.294kWh

Heat battery control log entry: 2024-10-06T23:01Z MT 92 GI 85 IT 179 F LGPqbvx ES 4

Putative current raw top-up level (when allowed): 93% (normal min 0%, max 100%).

Eddi state 4: boost (heat battery grid top-up).

Flags/status:

• [MT] 92% heat battery Maximum Top-up level: 92%
• [GI] Grid Intensity gCO2/kWh: 85 (7d mean 132)
• [IT] Grid gCO2/kWh Intensity Threshold below which discretionary top-up is allowed: 179.
• [F L] expected grid demand from High (peak) / - (normal) / Low (off-peak).
• [F G] grid is super-Green (low) intensity and no draw-down from storage.
• Recent (7/8) days when battery did not fill: 87%
• Grid frequency response minutes today (~0% of active): 2

External control tables:

• Expected grid demand by local hour of day.
• Grid intensity limit by demand level.
• Minimum (low-carbon) top-up by day of week.