Hybrid Control

Hybrid control is a smart way to manage your heating system. It combines a heat pump with a traditional boiler. using the most efficient source based on current conditions. This can save cost and CO₂ emissions.

We offer three modes of control:

Cost

Cost mode uses the cheapest energy source. It switches between the heat pump and boiler based on electricity and fuel prices.

The target COP of the boiler is determined by the relation of the cost for gas and electricity. Dynamic electricity prices are used if you have configured dynamic pricing.

CO₂

CO₂ mode uses the most environmentally friendly source. It switches between the heat pump and boiler based on CO₂ emissions.

The target COP of the boiler is determined by the relation of the CO₂ emissions from gas and electricity. The actual CO₂ emission per KWH is used. This can lead to using the boiler if the energy mix is heavy with fossiles or using the heatpump even it is more costly.

Balanced

Balanced mode uses a mix of cost and CO₂. It switches between the heat pump and boiler based on a balance of cost and CO₂ emissions.

This mode is similar to the CO₂ mode, however the heatpump is not used when it is more costly.

We define two COPs:

\[ \mathrm{COP}_{\mathrm{cost}} = \frac{\text{Cost Fossile}}{\text{Cost Electricity}} \] and \[ \mathrm{COP}_{\mathrm{CO}_2} = \frac{\mathrm{CO}_2/\text{KWh Fossile}}{\mathrm{CO}_2/\text{KWh Electricity}} \]

The target COP is then determined by the mode:

\[ \mathrm{COP}_{\text{target}} = \begin{cases} \mathrm{COP}_{\text{cost}} & \text{if mode is cost} \\ \mathrm{COP}_{\text{CO}_2} & \text{if mode is CO}_2 \\ \max(\mathrm{COP}_{\text{cost}}, \mathrm{COP}_{\text{CO}_2}) & \text{if mode is balanced} \end{cases} \]

For the balanced mode the maximum of the two COPs is used, assuring the heatpumt is only used if it is saving cost and CO₂.