Blueprint: peak shaving with home battery and smart plugs

Smoothing peaks without sacrificing comfort

With a home battery and a set of smart plugs, you can implement peak shaving: flattening your highest power peaks to protect fuses and minimise grid-related costs.

What this blueprint achieves

• Detects when total household power approaches a configured threshold.
• Temporarily disables non-critical loads through smart plugs.
• Lets the home battery supply power instead of drawing more from the grid.

Required building blocks

• Leafy Energy data with real-time power on phases or main connection.
• A home battery with controllable charge/discharge power.
• A group of smart plugs carrying non-critical loads (garden lights, chargers, decorative lighting).

High-level algorithm

1. When total power > 90% of the limit:
   • Battery switches to discharge mode.
   • Non-critical plug group is turned off.
2. When total power < 70% of the limit:
   • Battery may start charging again if prices permit.
   • Non-critical plugs can be re-enabled.

In Leafy Energy demos, this becomes a compelling graph: the raw consumption curve gets “clipped” while the grid draw stays neatly under a configurable cap.