soft solar router

pilot water heater power switch

• during solar panel production
• during grid discount hours when tomorrow is cloudy
• during grid discount hours when tomorrow is over taxed

weather module

Get the solar irradiance for the next 2 days

power monitoring module

get the consumption of the home, the solar panel production, and the grid import

settings module

hold the application settings

water eater power switch module

• turn on
• turn off

battery

• get the state of charge (in percent)
• get the state (charging, discharging, idle)
• get the instant power ( positive is charginf)

monitoring module

• push monitoring data to influxdb server

application module

events.py

from weather, power, battery and settings modules, events.py contains methods to generates events

event_start_sunny/event_stop_sunny:

• is_sunny_now(weather: Weather, now: datetime, settings: Settings) -> bool decide if solar production should be enough: compare current solar irradiance with settings.minimal_solar_irradiance_wm2

event_start_forced/event_stop_forced :

• is_cloudy_tomorrow(now: datetime, weather: Weather, settings: Settings) -> bool decide if tomorrow will be cloudy. check that solar irradiance > settings.minimal_solar_irradiance_wm2 during settings.minimal_daily_solar_hours
• is_forced_period_window(now: datetime, settings: Settings) -> bool define discount grid hours with settings.forced_hour_begin and settings.forced_hour_duration

event_too_much_import:

• is_too_much_import(now: datetime, power: Power, settings: Settings) -> bool return True when grid import > settings.too_much_import_watts during settings.too_much_import_duration

event_no_importing

• is_no_importing(now: datetime, power: Power, settings: Settings) -> bool: return True when grid import < settings.no_import_watts during settings.no_import_duration

event_is_enough_sun

• return True when estimates solar production is enough to switch on

state_machine.py