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.

NO HEAT BATTERY TOP-UP FROM GRID CURRENTLY.

Heat battery control log entry: 2022-08-13T23:36Z MT 0 GI 250 IT 100 F FM ES 1

Putative current raw top-up level (when allowed): 1% (normal min 0%, max 83%).

Flags/status:

• [MT] 0% heat battery Maximum Top-up level: 0%
• [GI] Grid Intensity gCO2/kWh: 250
• [IT] Grid intensity gCO2/kWh threshold below which top-up is allowed: 100.
• [F M] expected grid demand from High (peak) / - (normal) / Medium (off-peak) / Low (off-peak).
• [F F] good Forecast PV generation tomorrow.
• Recent (0/8) days when battery did not fill: 0%
• Grid frequency response minutes today (~0% of active): 1

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.