Electric Heater

The electric heater is a local energy technology that converts electric energy into thermal energy with a given efficiency smaller than 100%.

For Swiss municipalities, it is usually already deployed in the standard scenarios because many buildings use electric heater for domestic hot water production and some use it for space heating.

In the optimization, the deployment of new electric heaters is not allowed.

Attribute	Description	Standard value	Unit	Data type
deployment	If set to ‘true’, the technology will be considered in the energy system model (this does not necessarily mean it will be used). Only relevant for optimisation.	True	—	bool
kW_max	Maximum thermal capacity (i.e. heat output).	inf’	kW	float
co2_intensity	Carbon-dioxide intensity of technology output (annual average value).	0 *(emissons allocated to electricity tech)*	kg CO2/kWh	float
lifetime	Expected lifetime of technology before replacement is required.	25	years	int
interest_rate	Interest rate for computing levelised costs (if required).	0.025	—	float
replacement_factor	share of electric heaters replaced in fossil_heater_retrofit scenario	1	—	float
capex	CAPEX cost of technology per unit of capacity.	0	CHF/kWp	float
capex_one_to_one_replacement	CAPEX cost of technology per unit of capacity (when device has reached the end of life)	500	CHF/kWp	float
maintenance_cost	OPEX cost of technology.	0	CHF/kWp/year	float
fixed_demand_share	If set to ‘True’, a fixed share (per timestep) of the total heat demand will be served by this tech. Only relevant if Optimisation is activated.	False	—	bool
fixed_demand_share_val	The share (per timestep) of the total heat demand served by this technology. Only relevant if fixed_demand_share == True and if Optimisation is activated.	0	—	float

The relationship between the in- and outflows is given by

\[\mathtt{v\_h\_eh} = \mathtt{u\_e\_eh}\]

The symbols and names of the flows are

u_e_eh	Inflow Electricity
v_h_eh	Outflow Heat