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: 0kWh

Heat battery control log entry: 2024-12-10T07:31Z MT 0 GI 255 IT 67 F WRbvxN ES 1

Putative current raw top-up level (when allowed): 65% (normal min 0%, max 100%).

Flags/status:

• [MT] 0% heat battery Maximum Top-up level: 0%
• [GI] Grid Intensity gCO2/kWh: 255 (7d mean 150)
• [IT] Grid gCO2/kWh Intensity Threshold below which discretionary top-up is allowed: 67.
• [F ] expected grid demand from High (peak) / - (normal) / Low (off-peak).
• [F R] grid is Red (high) intensity, or unknown [r].
• [F W] solar generation Winter minimum.
• Recent (7/8) days when tank or battery did not fill: 87%

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.