User profile (private household, general trade, …)
Up to 2 different PV arrays: • PV power • PV orientation • PV slope
Cell technology
Mounting type of the PV system (rooftop installation or building-integrated)
Efficiency and standby consumption of the inverter
Results:
Energy yield
Energy drawn from the grid
Feed-in into grid
Self-consumption
Self-sufficiency
Horizon and course of the sun at the location
Other options (e.g. multiple, different orientations of PV panels) are also available upon request.
Module “Battery”
Input parameters:
Installed battery capacity
Max. allowed depth of discharge (DOD)
Self-discharge
Life span of batteries (lifetime and number of cycles)
Max. charge and discharge power
Round-trip efficiency of battery inverter
Self-consumption of battery inverter
Results:
PV self-consumption via battery
Battery exchange interval
Self-consumption with battery
Self-sufficiency with battery
Battery system losses
Module “Hot Water”
Input parameters:
Type of electric hot water generation (heating rod, heat pump, supporting an existing heating system, …)
Hot water user profile
Power and stand-by consumption of hot water device
Efficiency (heating rod) or coefficient of performance (heat pump), respectively
Boiler volume
Max. allowed water temperature
Water temperature at boiler entry
Guaranteed water temperature
Boiler losses
Type of control (temperature controlled, PV controlled, timer switch)
Results:
Consumption for hot water generation
PV self-consumption for hot water generation
PV coverage of hot water generation
Hot water system losses
Analysis of system design (failures, under- or oversizing, …)
Module “Space Heating”
Input parameters:
Type of electric space heating (electric heating, heat pump)
Power and stand-by consumption of heater
Efficiency (electric heating) or coefficient of performance (heat pump), respectively
Inlet temperature (heat pump)
Building parameters (u-value, size, outer surfaces, window surfaces, ventilation, …)
Desired room temperature (day, night, incl. hysteresis)
External heat sources (waste heat from electric consumption, hot water generation, people, …)
Type of control (temperature controlled, PV controlled, timer switch)
Results:
Consumption for space heating
PV self-consumption for space heating
PV coverage of space heating
Space heating system losses
Heating period
Analysis of system design (failures, under- or oversizing, …)
Module “Electric Vehicles”
Input parameters:
Power and stand-by consumption of wallbox (charger)
Parameters of electric vehicle (charging power, battery capacity, consumption / 100 km, …)
Usage of electric vehicle during the week (time profile, km profile)
Type of control (PV controlled, timer switch)
Results:
Consumption for electric vehicle
PV self-consumption for electric vehicle
PV coverage of electric vehicle
Wallbox losses
Analysis of system design (failures, under- or oversizing,…)
Module “Economics”
Input parameters:
Calculation period
Expected inflation and ROI
Costs of all components
Subsidies, if any
Expected life span of the components
Maintenance costs of the system components
Electricity costs
Feed-in tariff
Expected development of all costs and tariffs over the calculation period
Results:
List of one-off investment costs and subsidies
List of running costs (maintenance, electricity consumption from the grid) and revenue (feed-in)
Electricity production costs
Net present value over the calculation period
Graphical analysis of the net present value over the calculation period
Please note, that the module “Economy” only includes costs for PV and electrical storage (modules “Basic” and “Battery”), but no costs for “Hot Water”, “Space Heating” and “Electric Vehicles”.
All energy values such as energy yield, grid consumption, grid feed-in and the consumption of the individual system components and their degree of self-consumption and self-sufficiency are calculated and displayed both as annual averages and separately for each month.
