hass.tibber_prices/custom_components/tibber_prices/services/plan_charging.py
Julian Pawlowski 96f36a3339 feat(services): add plan_charging service for battery/EV scheduling
Accepts battery parameters (capacity, current/target SoC, max power) and
returns a cost-minimized charging schedule with per-interval power, SoC
progression, and total cost — no manual duration calculation needed.

Supports fixed, continuous (min_charge_power_w), and stepped
(charge_power_steps_w) charging modes, deadline-aware two-pass planning
(must_reach_soc + must_reach_by / must_reach_by_event), and round-trip
economics (expected_discharge_price, reserve_for_discharge,
max_cost_per_kwh) for arbitrage use cases. Includes min_charge_duration
and max_cycles_per_day constraints.

Groups deadline fields (must_reach_soc_*, must_reach_by,
must_reach_by_event) into a dedicated section so a deadline use case can
be configured in one place. Battery section lists capacity before the
percent SoC fields that depend on it. Response exposes stable reason
codes (already_at_target, energy_unreachable, energy_unreachable_by_
deadline, no_intervals_after_economic_filter, …) documented in the
service description and user docs.
2026-04-20 21:43:41 +00:00

973 lines
39 KiB
Python

"""Service handler for the plan_charging service."""
from __future__ import annotations
from dataclasses import dataclass
from datetime import datetime, time as dt_time, timedelta
import logging
from typing import TYPE_CHECKING, Any
import voluptuous as vol
from custom_components.tibber_prices.const import DOMAIN, get_display_unit_factor, get_display_unit_string
from custom_components.tibber_prices.utils.price_window import (
calculate_window_statistics,
find_cheapest_n_intervals,
group_intervals_into_segments,
)
from homeassistant.exceptions import ServiceValidationError
from homeassistant.helpers import config_validation as cv
from homeassistant.util import dt as dt_util
from .charging import (
apply_segment_constraints,
build_deadline_schedule,
build_power_schedule,
build_soc_progression_from_schedule,
calculate_energy_needed,
calculate_plan_economics,
determine_power_mode,
energy_for_power,
filter_intervals_by_profitability,
get_deadline_events,
resolve_deadline,
soc_percent_to_kwh,
)
from .entity_resolver import or_entity_ref, resolve_entity_references
from .helpers import (
INTERVAL_MINUTES,
PRICE_LEVEL_ORDER,
VALID_SEARCH_SCOPES,
apply_must_finish_by,
build_rating_lookup,
build_response_interval,
calculate_search_range_avg,
check_min_distance_from_avg,
filter_intervals_by_price_level,
get_entry_and_data,
resolve_home_timezone,
resolve_search_range,
validate_price_level_range,
validate_search_params,
)
from .relaxation import (
MIN_RELAXED_DURATION_INTERVALS,
calculate_max_duration_reduction_intervals,
generate_relaxation_steps,
)
if TYPE_CHECKING:
from zoneinfo import ZoneInfo
from homeassistant.core import HomeAssistant, ServiceCall, ServiceResponse
_LOGGER = logging.getLogger(__name__)
PLAN_CHARGING_SERVICE_NAME = "plan_charging"
_CHARGING_ENTITY_PARAMS: dict[str, type] = {
"battery_capacity_kwh": float,
"current_soc_percent": float,
"current_soc_kwh": float,
"target_soc_percent": float,
"target_soc_kwh": float,
"must_reach_soc_percent": float,
"must_reach_soc_kwh": float,
"max_charge_power_w": int,
"min_charge_power_w": int,
"grid_import_limit_w": int,
"charging_efficiency": float,
"discharging_efficiency": float,
"expected_discharge_price": float,
"max_cost_per_kwh": float,
"min_charge_duration_minutes": int,
"max_cycles_per_day": int,
"search_start": datetime,
"search_end": datetime,
"search_start_time": dt_time,
"search_end_time": dt_time,
"search_start_day_offset": int,
"search_end_day_offset": int,
"search_start_offset_minutes": int,
"search_end_offset_minutes": int,
"min_distance_from_avg": float,
"duration_flexibility_minutes": int,
"must_finish_by": datetime,
"must_reach_by": datetime,
}
PLAN_CHARGING_SERVICE_SCHEMA = vol.Schema(
{
vol.Optional("entry_id", default=""): cv.string,
vol.Optional("battery_capacity_kwh"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.1, max=1000.0)),
),
vol.Optional("current_soc_percent"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.0, max=100.0)),
),
vol.Optional("current_soc_kwh"): or_entity_ref(vol.All(vol.Coerce(float), vol.Range(min=0.0))),
vol.Optional("target_soc_percent"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.0, max=100.0)),
),
vol.Optional("target_soc_kwh"): or_entity_ref(vol.All(vol.Coerce(float), vol.Range(min=0.0))),
vol.Optional("must_reach_soc_percent"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.0, max=100.0)),
),
vol.Optional("must_reach_soc_kwh"): or_entity_ref(vol.All(vol.Coerce(float), vol.Range(min=0.0))),
vol.Required("max_charge_power_w"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=1, max=100000)),
),
vol.Optional("min_charge_power_w"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=1, max=100000)),
),
vol.Optional("charge_power_steps_w"): vol.All(
[vol.All(vol.Coerce(int), vol.Range(min=1, max=100000))],
vol.Length(min=1, max=20),
),
vol.Optional("grid_import_limit_w"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=1, max=100000)),
),
vol.Optional("charging_efficiency", default=1.0): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.5, max=1.0)),
),
vol.Optional("search_start"): or_entity_ref(cv.datetime),
vol.Optional("search_end"): or_entity_ref(cv.datetime),
vol.Optional("search_start_time"): or_entity_ref(cv.time),
vol.Optional("search_start_day_offset", default=0): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=-7, max=2)),
),
vol.Optional("search_end_time"): or_entity_ref(cv.time),
vol.Optional("search_end_day_offset", default=0): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=-7, max=2)),
),
vol.Optional("search_start_offset_minutes"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=-10080, max=10080)),
),
vol.Optional("search_end_offset_minutes"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=-10080, max=10080)),
),
vol.Optional("search_scope"): vol.In(VALID_SEARCH_SCOPES),
vol.Optional("include_current_interval", default=True): cv.boolean,
vol.Optional("must_finish_by"): or_entity_ref(cv.datetime),
vol.Optional("must_reach_by"): or_entity_ref(cv.datetime),
vol.Optional("must_reach_by_event"): vol.In(sorted(get_deadline_events())),
vol.Optional("max_price_level"): vol.In([level.lower() for level in PRICE_LEVEL_ORDER]),
vol.Optional("min_price_level"): vol.In([level.lower() for level in PRICE_LEVEL_ORDER]),
vol.Optional("include_comparison_details", default=False): cv.boolean,
vol.Optional("use_base_unit", default=False): cv.boolean,
vol.Optional("smooth_outliers", default=True): cv.boolean,
vol.Optional("min_distance_from_avg"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.1, max=50.0)),
),
vol.Optional("allow_relaxation", default=True): cv.boolean,
vol.Optional("duration_flexibility_minutes"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=0, max=120)),
),
vol.Optional("discharging_efficiency", default=1.0): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.5, max=1.0)),
),
vol.Optional("expected_discharge_price"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.0, max=100000.0)),
),
vol.Optional("reserve_for_discharge", default=False): cv.boolean,
vol.Optional("max_cost_per_kwh"): or_entity_ref(
vol.All(vol.Coerce(float), vol.Range(min=0.0, max=100000.0)),
),
vol.Optional("min_charge_duration_minutes"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=15, max=240)),
),
vol.Optional("max_cycles_per_day"): or_entity_ref(
vol.All(vol.Coerce(int), vol.Range(min=1, max=20)),
),
}
)
def _interval_start(interval: dict[str, Any]) -> datetime:
starts_at = interval["startsAt"]
return datetime.fromisoformat(starts_at) if isinstance(starts_at, str) else starts_at
def _translate_error_key(error_key: str) -> ServiceValidationError:
return ServiceValidationError(
translation_domain=DOMAIN,
translation_key=error_key,
)
def _resolve_soc_value(
data: dict[str, Any],
*,
percent_key: str,
kwh_key: str,
capacity_kwh: float | None,
field_name: str,
required: bool,
) -> float | None:
has_percent = percent_key in data
has_kwh = kwh_key in data
if has_percent and has_kwh:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="ambiguous_soc_input",
translation_placeholders={"field": field_name},
)
if not has_percent and not has_kwh:
if required:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key=f"missing_{field_name}",
)
return None
if has_percent:
if capacity_kwh is None:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="capacity_required_for_percent",
)
return soc_percent_to_kwh(float(data[percent_key]), capacity_kwh)
return float(data[kwh_key])
def _validate_soc_inputs(data: dict[str, Any]) -> dict[str, float | None]:
capacity_kwh = float(data["battery_capacity_kwh"]) if "battery_capacity_kwh" in data else None
current_soc_kwh = _resolve_soc_value(
data,
percent_key="current_soc_percent",
kwh_key="current_soc_kwh",
capacity_kwh=capacity_kwh,
field_name="current_soc",
required=True,
)
target_soc_kwh = _resolve_soc_value(
data,
percent_key="target_soc_percent",
kwh_key="target_soc_kwh",
capacity_kwh=capacity_kwh,
field_name="target_soc",
required=True,
)
must_reach_soc_kwh = _resolve_soc_value(
data,
percent_key="must_reach_soc_percent",
kwh_key="must_reach_soc_kwh",
capacity_kwh=capacity_kwh,
field_name="must_reach_soc",
required=False,
)
if capacity_kwh is not None and target_soc_kwh is not None and target_soc_kwh > capacity_kwh + 1e-6:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="target_exceeds_capacity",
translation_placeholders={
"target_soc_kwh": f"{target_soc_kwh:.2f}",
"capacity_kwh": f"{capacity_kwh:.2f}",
},
)
if must_reach_soc_kwh is not None and "must_reach_by" not in data and "must_reach_by_event" not in data:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="missing_deadline_for_must_reach",
)
if must_reach_soc_kwh is None and ("must_reach_by" in data or "must_reach_by_event" in data):
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="missing_must_reach_soc",
)
if current_soc_kwh is not None and target_soc_kwh is not None and must_reach_soc_kwh is not None:
if must_reach_soc_kwh < current_soc_kwh - 1e-6 or must_reach_soc_kwh > target_soc_kwh + 1e-6:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="invalid_must_reach_soc",
)
return {
"capacity_kwh": capacity_kwh,
"current_soc_kwh": current_soc_kwh,
"target_soc_kwh": target_soc_kwh,
"must_reach_soc_kwh": must_reach_soc_kwh,
}
def _build_candidate_intervals(
price_info: list[dict[str, Any]],
*,
max_price_level: str | None,
min_price_level: str | None,
smooth_outliers: bool,
charging_efficiency: float,
discharging_efficiency: float,
expected_discharge_price_base: float | None,
reserve_for_discharge: bool,
max_cost_per_kwh_base: float | None,
) -> tuple[list[dict[str, Any]], list[dict[str, Any]], dict[str, Any]]:
filtered_by_level = filter_intervals_by_price_level(price_info, min_price_level, max_price_level)
candidates = [dict(interval) for interval in filtered_by_level]
if smooth_outliers and candidates:
from .helpers import smooth_service_intervals # noqa: PLC0415
smoothed = smooth_service_intervals([dict(interval) for interval in candidates])
smoothed_map = {interval["startsAt"]: float(interval["total"]) for interval in smoothed}
for candidate in candidates:
candidate["_sort_total"] = smoothed_map.get(candidate["startsAt"], float(candidate["total"]))
candidates, economics_filter = filter_intervals_by_profitability(
candidates,
charging_efficiency=charging_efficiency,
discharging_efficiency=discharging_efficiency,
expected_discharge_price=expected_discharge_price_base,
reserve_for_discharge=reserve_for_discharge,
max_cost_per_kwh=max_cost_per_kwh_base,
)
return candidates, filtered_by_level, economics_filter
def _build_charging_interval(
interval: dict[str, Any],
*,
unit_factor: int,
rating_lookup: dict[str, str | None],
) -> dict[str, Any]:
response = build_response_interval(interval, unit_factor, rating_lookup)
response["power_w"] = interval.get("power_w")
response["grid_energy_kwh"] = interval.get("grid_energy_kwh")
response["energy_kwh"] = interval.get("energy_kwh")
response["stored_energy_kwh"] = interval.get("stored_energy_kwh")
response["soc_after_kwh"] = interval.get("soc_after_kwh")
if "soc_after_percent" in interval:
response["soc_after_percent"] = interval["soc_after_percent"]
return response
def _build_response_segments(
scheduled_intervals: list[dict[str, Any]],
*,
unit_factor: int,
rating_lookup: dict[str, str | None],
) -> list[dict[str, Any]]:
response_segments: list[dict[str, Any]] = []
for segment in group_intervals_into_segments(scheduled_intervals):
seg_stats = calculate_window_statistics(
segment["intervals"],
unit_factor=unit_factor,
round_decimals=4,
power_profile=[int(interval["power_w"]) for interval in segment["intervals"]],
)
segment_end = _interval_start(segment["intervals"][-1]) + timedelta(minutes=INTERVAL_MINUTES)
response_segments.append(
{
"start": segment["start"],
"end": segment_end.isoformat(),
"duration_minutes": segment["duration_minutes"],
"interval_count": segment["interval_count"],
"price_mean": seg_stats.get("price_mean"),
"intervals": [
_build_charging_interval(interval, unit_factor=unit_factor, rating_lookup=rating_lookup)
for interval in segment["intervals"]
],
}
)
return response_segments
def _build_battery_info(
*,
current_soc_kwh: float,
target_soc_kwh: float,
capacity_kwh: float | None,
requested_energy_needed_kwh: float,
charging_efficiency: float,
achieved_soc_kwh: float,
must_reach_soc_kwh: float | None,
) -> dict[str, Any]:
info: dict[str, Any] = {
"current_soc_kwh": round(current_soc_kwh, 4),
"target_soc_kwh": round(target_soc_kwh, 4),
"energy_needed_kwh": round(requested_energy_needed_kwh, 4),
"charging_efficiency": charging_efficiency,
"achieved_soc_kwh": round(achieved_soc_kwh, 4),
"target_met": achieved_soc_kwh >= target_soc_kwh - 1e-6,
}
if must_reach_soc_kwh is not None:
info["must_reach_soc_kwh"] = round(must_reach_soc_kwh, 4)
if capacity_kwh is not None and capacity_kwh > 0:
info["capacity_kwh"] = round(capacity_kwh, 4)
info["current_soc_percent"] = round(current_soc_kwh / capacity_kwh * 100.0, 2)
info["target_soc_percent"] = round(target_soc_kwh / capacity_kwh * 100.0, 2)
info["achieved_soc_percent"] = round(achieved_soc_kwh / capacity_kwh * 100.0, 2)
if must_reach_soc_kwh is not None:
info["must_reach_soc_percent"] = round(must_reach_soc_kwh / capacity_kwh * 100.0, 2)
return info
@dataclass(frozen=True)
class _PlanContext:
"""Inputs that stay constant across relaxation attempts."""
price_info: list[dict[str, Any]]
current_soc_kwh: float
target_soc_kwh: float
capacity_kwh: float | None
must_reach_soc_kwh: float | None
deadline: datetime | None
charging_efficiency: float
discharging_efficiency: float
max_charge_power_w: int
min_charge_power_w: int | None
charge_power_steps_w: list[int] | None
grid_import_limit_w: int | None
min_charge_duration_minutes: int | None
max_cycles_per_day: int | None
smooth_outliers: bool
expected_discharge_price_base: float | None
reserve_for_discharge: bool
max_cost_per_kwh_base: float | None
unit_factor: int
@property
def economic_filter_active(self) -> bool:
"""Whether any economic filter param was supplied by the user."""
return (
self.expected_discharge_price_base is not None
or self.max_cost_per_kwh_base is not None
or self.reserve_for_discharge
)
def _classify_empty_candidates(
ctx: _PlanContext,
filtered_by_level: list[dict[str, Any]],
economics_filter: dict[str, Any],
*,
max_price_level: str | None,
min_price_level: str | None,
) -> str:
"""Return a stable reason code when no candidate intervals remain."""
level_filter_active = min_price_level is not None or max_price_level is not None
if not ctx.price_info:
return "no_data_in_range"
if level_filter_active and not filtered_by_level:
return "no_intervals_matching_level_filter"
if economics_filter.get("filtered_out_by_cost") or economics_filter.get("filtered_out_by_profitability"):
return "no_intervals_after_economic_filter"
return "energy_unreachable"
def _build_raw_schedule(
ctx: _PlanContext,
candidates: list[dict[str, Any]],
effective_energy_needed_grid_kwh: float,
) -> tuple[dict[str, Any] | None, str]:
"""Run the deadline-aware or single-pass scheduler and return a schedule dict."""
if ctx.deadline is not None and ctx.must_reach_soc_kwh is not None:
energy_needed_by_deadline = min(
effective_energy_needed_grid_kwh,
calculate_energy_needed(ctx.current_soc_kwh, ctx.must_reach_soc_kwh, ctx.charging_efficiency),
)
schedule = build_deadline_schedule(
candidates,
total_energy_needed_grid_kwh=effective_energy_needed_grid_kwh,
energy_needed_by_deadline_grid_kwh=energy_needed_by_deadline,
deadline=ctx.deadline,
max_charge_power_w=ctx.max_charge_power_w,
charging_efficiency=ctx.charging_efficiency,
min_charge_power_w=ctx.min_charge_power_w,
charge_power_steps_w=ctx.charge_power_steps_w,
grid_import_limit_w=ctx.grid_import_limit_w,
interval_minutes=INTERVAL_MINUTES,
)
if schedule["deadline_unallocated_grid_energy_kwh"] > 1e-6:
return None, "energy_unreachable_by_deadline"
return schedule, ""
schedule = build_power_schedule(
candidates,
effective_energy_needed_grid_kwh,
max_charge_power_w=ctx.max_charge_power_w,
charging_efficiency=ctx.charging_efficiency,
min_charge_power_w=ctx.min_charge_power_w,
charge_power_steps_w=ctx.charge_power_steps_w,
grid_import_limit_w=ctx.grid_import_limit_w,
interval_minutes=INTERVAL_MINUTES,
)
return schedule, ""
def _selection_passes_distance_check(
ctx: _PlanContext,
scheduled_intervals: list[dict[str, Any]],
min_distance_from_avg: float | None,
) -> bool:
"""Return True if the selection meets min_distance_from_avg (or the check is disabled)."""
if min_distance_from_avg is None or not scheduled_intervals:
return True
range_avg = calculate_search_range_avg(ctx.price_info)
if range_avg is None:
return True
selection_mean = sum(float(interval["total"]) for interval in scheduled_intervals) / len(scheduled_intervals)
return check_min_distance_from_avg(selection_mean, range_avg, min_distance_from_avg, reverse=False)
def _build_deadline_info(
ctx: _PlanContext,
scheduled_intervals: list[dict[str, Any]],
) -> dict[str, Any] | None:
"""Compute deadline adherence by splitting the constrained intervals at the deadline."""
if ctx.deadline is None or ctx.must_reach_soc_kwh is None:
return None
pre_stored_kwh = sum(
float(interval.get("stored_energy_kwh", 0.0))
for interval in scheduled_intervals
if _interval_start(interval) < ctx.deadline
)
achieved_by_deadline = ctx.current_soc_kwh + pre_stored_kwh
return {
"must_reach_by": ctx.deadline.isoformat(),
"must_reach_soc_kwh": round(ctx.must_reach_soc_kwh, 4),
"achieved_soc_kwh": round(achieved_by_deadline, 4),
"deadline_met": achieved_by_deadline >= ctx.must_reach_soc_kwh - 1e-6,
}
def _attempt_plan(
ctx: _PlanContext,
*,
effective_energy_needed_grid_kwh: float,
max_price_level: str | None,
min_price_level: str | None,
min_distance_from_avg: float | None,
) -> tuple[dict[str, Any] | None, str]:
"""Run one scheduling attempt with the provided (possibly relaxed) filters."""
candidates, filtered_by_level, economics_filter = _build_candidate_intervals(
ctx.price_info,
max_price_level=max_price_level,
min_price_level=min_price_level,
smooth_outliers=ctx.smooth_outliers,
charging_efficiency=ctx.charging_efficiency,
discharging_efficiency=ctx.discharging_efficiency,
expected_discharge_price_base=ctx.expected_discharge_price_base,
reserve_for_discharge=ctx.reserve_for_discharge,
max_cost_per_kwh_base=ctx.max_cost_per_kwh_base,
)
if not candidates:
reason = _classify_empty_candidates(
ctx,
filtered_by_level,
economics_filter,
max_price_level=max_price_level,
min_price_level=min_price_level,
)
return None, reason
schedule, reason = _build_raw_schedule(ctx, candidates, effective_energy_needed_grid_kwh)
if schedule is None:
return None, reason
if schedule["unallocated_grid_energy_kwh"] > 1e-6:
return None, "energy_unreachable"
schedule, warnings = apply_segment_constraints(
schedule,
candidates,
charging_efficiency=ctx.charging_efficiency,
min_charge_duration_minutes=ctx.min_charge_duration_minutes,
max_cycles_per_day=ctx.max_cycles_per_day,
interval_minutes=INTERVAL_MINUTES,
)
scheduled_intervals = build_soc_progression_from_schedule(
schedule["intervals"], ctx.current_soc_kwh, ctx.capacity_kwh
)
if not _selection_passes_distance_check(ctx, scheduled_intervals, min_distance_from_avg):
return None, "selection_above_distance_threshold"
economics = calculate_plan_economics(
scheduled_intervals,
charging_efficiency=ctx.charging_efficiency,
discharging_efficiency=ctx.discharging_efficiency,
expected_discharge_price=ctx.expected_discharge_price_base,
unit_factor=ctx.unit_factor,
max_cost_per_kwh=ctx.max_cost_per_kwh_base,
reserve_for_discharge=ctx.reserve_for_discharge,
)
return (
{
"schedule": schedule,
"scheduled_intervals": scheduled_intervals,
"achieved_soc_kwh": ctx.current_soc_kwh + schedule["total_stored_energy_kwh"],
"deadline": _build_deadline_info(ctx, scheduled_intervals),
"economics": economics,
"warnings": warnings,
"economics_filter": economics_filter if ctx.economic_filter_active else None,
},
"",
)
async def handle_plan_charging(call: ServiceCall) -> ServiceResponse:
"""Handle the plan_charging service call."""
hass: HomeAssistant = call.hass
data, resolved_refs = resolve_entity_references(hass, call.data, _CHARGING_ENTITY_PARAMS)
validated = _validate_soc_inputs(data)
capacity_kwh = validated["capacity_kwh"]
current_soc_value = validated["current_soc_kwh"]
target_soc_value = validated["target_soc_kwh"]
if current_soc_value is None or target_soc_value is None:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="missing_current_soc" if current_soc_value is None else "missing_target_soc",
)
current_soc_kwh = float(current_soc_value)
target_soc_kwh = float(target_soc_value)
must_reach_soc_value = validated["must_reach_soc_kwh"]
must_reach_soc_kwh = float(must_reach_soc_value) if must_reach_soc_value is not None else None
entry_id = data.get("entry_id", "")
max_charge_power_w = int(data["max_charge_power_w"])
min_charge_power_w = int(data["min_charge_power_w"]) if "min_charge_power_w" in data else None
charge_power_steps_w = [int(step) for step in data.get("charge_power_steps_w", [])] or None
grid_import_limit_w = int(data["grid_import_limit_w"]) if "grid_import_limit_w" in data else None
charging_efficiency = float(data.get("charging_efficiency", 1.0))
discharging_efficiency = float(data.get("discharging_efficiency", 1.0))
use_base_unit = bool(data.get("use_base_unit", False))
max_price_level = data.get("max_price_level")
min_price_level = data.get("min_price_level")
include_comparison_details = bool(data.get("include_comparison_details", False))
smooth_outliers = bool(data.get("smooth_outliers", True))
min_distance_from_avg = data.get("min_distance_from_avg")
allow_relaxation = bool(data.get("allow_relaxation", True))
duration_flexibility_minutes = data.get("duration_flexibility_minutes")
reserve_for_discharge = bool(data.get("reserve_for_discharge", False))
min_charge_duration_minutes = (
int(data["min_charge_duration_minutes"]) if "min_charge_duration_minutes" in data else None
)
max_cycles_per_day = int(data["max_cycles_per_day"]) if "max_cycles_per_day" in data else None
if current_soc_kwh >= target_soc_kwh - 1e-6:
entry, _coordinator, _coordinator_data = get_entry_and_data(hass, entry_id)
currency = entry.data.get("currency", "EUR")
price_unit = f"{currency}/kWh" if use_base_unit else get_display_unit_string(entry, currency)
response: dict[str, Any] = {
"home_id": entry.data.get("home_id", ""),
"intervals_found": False,
"reason": "already_at_target",
"battery": _build_battery_info(
current_soc_kwh=current_soc_kwh,
target_soc_kwh=target_soc_kwh,
capacity_kwh=capacity_kwh,
requested_energy_needed_kwh=0.0,
charging_efficiency=charging_efficiency,
achieved_soc_kwh=current_soc_kwh,
must_reach_soc_kwh=must_reach_soc_kwh,
),
"charging": None,
"currency": currency,
"price_unit": price_unit,
}
if resolved_refs:
response["_resolved"] = resolved_refs
return response
requested_energy_needed_grid_kwh = calculate_energy_needed(current_soc_kwh, target_soc_kwh, charging_efficiency)
entry, coordinator, coordinator_data = get_entry_and_data(hass, entry_id)
rating_lookup = build_rating_lookup(coordinator_data)
home_id = entry.data.get("home_id")
if not home_id:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="missing_home_id",
)
validate_price_level_range(min_price_level, max_price_level)
validate_search_params(data)
home_timezone = resolve_home_timezone(coordinator, home_id)
from zoneinfo import ZoneInfo # noqa: PLC0415
home_tz: ZoneInfo = ZoneInfo(home_timezone)
effective_data, must_finish_by_dt = apply_must_finish_by(data, home_tz)
now = dt_util.now().astimezone(home_tz)
search_start, search_end = resolve_search_range(effective_data, now, home_tz)
currency = entry.data.get("currency", "EUR")
unit_factor = 1 if use_base_unit else get_display_unit_factor(entry)
price_unit = f"{currency}/kWh" if use_base_unit else get_display_unit_string(entry, currency)
expected_discharge_price_base = (
float(data["expected_discharge_price"]) / unit_factor if "expected_discharge_price" in data else None
)
max_cost_per_kwh_base = float(data["max_cost_per_kwh"]) / unit_factor if "max_cost_per_kwh" in data else None
try:
_mode, effective_max_power_w, _allowed_steps = determine_power_mode(
max_charge_power_w=max_charge_power_w,
min_charge_power_w=min_charge_power_w,
charge_power_steps_w=charge_power_steps_w,
grid_import_limit_w=grid_import_limit_w,
)
except ValueError as error:
raise _translate_error_key(str(error)) from error
max_interval_energy = energy_for_power(effective_max_power_w, INTERVAL_MINUTES)
requested_intervals = max(1, int((requested_energy_needed_grid_kwh / max_interval_energy) + 0.999999))
try:
deadline, deadline_source = resolve_deadline(
coordinator_data=coordinator_data,
now=now,
home_tz=home_tz,
must_reach_by=data.get("must_reach_by"),
must_reach_by_event=data.get("must_reach_by_event"),
)
except ValueError as error:
raise _translate_error_key(str(error)) from error
if deadline is not None and (deadline <= search_start or deadline > search_end):
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="deadline_outside_search_range",
)
api_client = coordinator.api
user_data = coordinator._cached_user_data # noqa: SLF001
pool = entry.runtime_data.interval_pool
try:
price_info, _api_called = await pool.get_intervals(
api_client=api_client,
user_data=user_data,
start_time=search_start,
end_time=search_end,
)
except Exception as error:
_LOGGER.exception("Error fetching price data for %s", PLAN_CHARGING_SERVICE_NAME)
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="price_fetch_failed",
) from error
plan_ctx = _PlanContext(
price_info=price_info,
current_soc_kwh=current_soc_kwh,
target_soc_kwh=target_soc_kwh,
capacity_kwh=capacity_kwh,
must_reach_soc_kwh=must_reach_soc_kwh,
deadline=deadline,
charging_efficiency=charging_efficiency,
discharging_efficiency=discharging_efficiency,
max_charge_power_w=max_charge_power_w,
min_charge_power_w=min_charge_power_w,
charge_power_steps_w=charge_power_steps_w,
grid_import_limit_w=grid_import_limit_w,
min_charge_duration_minutes=min_charge_duration_minutes,
max_cycles_per_day=max_cycles_per_day,
smooth_outliers=smooth_outliers,
expected_discharge_price_base=expected_discharge_price_base,
reserve_for_discharge=reserve_for_discharge,
max_cost_per_kwh_base=max_cost_per_kwh_base,
unit_factor=unit_factor,
)
planning_result, reason = _attempt_plan(
plan_ctx,
effective_energy_needed_grid_kwh=requested_energy_needed_grid_kwh,
max_price_level=max_price_level,
min_price_level=min_price_level,
min_distance_from_avg=min_distance_from_avg,
)
relaxation_applied = False
relaxation_steps = 0
warnings: list[str] = []
if planning_result is None and allow_relaxation:
max_reduction = calculate_max_duration_reduction_intervals(requested_intervals, duration_flexibility_minutes)
steps = generate_relaxation_steps(
min_distance_from_avg=min_distance_from_avg,
max_price_level=max_price_level,
min_price_level=min_price_level,
total_intervals=requested_intervals,
min_duration_intervals=max(MIN_RELAXED_DURATION_INTERVALS, 1),
max_duration_reduction_intervals=max_reduction,
reverse=False,
)
for step in steps:
reduced_energy = max(
calculate_energy_needed(current_soc_kwh, must_reach_soc_kwh, charging_efficiency)
if must_reach_soc_kwh is not None
else 0.0,
requested_energy_needed_grid_kwh - (step.duration_reduction * max_interval_energy),
)
attempt, reason = _attempt_plan(
plan_ctx,
effective_energy_needed_grid_kwh=reduced_energy,
max_price_level=step.max_price_level,
min_price_level=step.min_price_level,
min_distance_from_avg=step.min_distance_from_avg,
)
if attempt is not None:
planning_result = attempt
relaxation_applied = True
relaxation_steps = step.step_number
warnings.append("target_reduced_by_relaxation")
break
if planning_result is None:
response: dict[str, Any] = {
"home_id": home_id,
"search_start": search_start.isoformat(),
"search_end": search_end.isoformat(),
"must_finish_by": must_finish_by_dt.isoformat() if must_finish_by_dt else None,
"intervals_found": False,
"reason": reason,
"battery": _build_battery_info(
current_soc_kwh=current_soc_kwh,
target_soc_kwh=target_soc_kwh,
capacity_kwh=capacity_kwh,
requested_energy_needed_kwh=requested_energy_needed_grid_kwh,
charging_efficiency=charging_efficiency,
achieved_soc_kwh=current_soc_kwh,
must_reach_soc_kwh=must_reach_soc_kwh,
),
"charging": None,
"deadline": {"must_reach_by": deadline.isoformat(), "source": deadline_source} if deadline else None,
"economics": None,
"currency": currency,
"price_unit": price_unit,
"relaxation_applied": relaxation_applied,
}
if relaxation_applied:
response["relaxation_steps"] = relaxation_steps
if resolved_refs:
response["_resolved"] = resolved_refs
return response
scheduled_intervals = planning_result["scheduled_intervals"]
schedule_data = planning_result["schedule"]
warnings.extend(planning_result.get("warnings", []))
achieved_soc_kwh = float(planning_result["achieved_soc_kwh"])
response_intervals = [
_build_charging_interval(interval, unit_factor=unit_factor, rating_lookup=rating_lookup)
for interval in scheduled_intervals
]
response_segments = _build_response_segments(
scheduled_intervals,
unit_factor=unit_factor,
rating_lookup=rating_lookup,
)
power_profile = [int(interval["power_w"]) for interval in scheduled_intervals]
stats = calculate_window_statistics(
scheduled_intervals,
unit_factor=unit_factor,
round_decimals=4,
power_profile=power_profile,
)
total_cost_base = sum(
float(interval["total"]) * float(interval["grid_energy_kwh"]) for interval in scheduled_intervals
)
avg_price_per_kwh_base = (
total_cost_base / schedule_data["total_grid_energy_kwh"] if schedule_data["total_grid_energy_kwh"] > 0 else 0.0
)
comparison_result = find_cheapest_n_intervals(price_info, len(scheduled_intervals), 1, reverse=True)
price_comparison: dict[str, Any] = {}
if comparison_result is not None:
comparison_stats = calculate_window_statistics(
comparison_result["intervals"],
unit_factor=unit_factor,
round_decimals=4,
)
own_mean = stats.get("price_mean")
comparison_mean = comparison_stats.get("price_mean")
if own_mean is not None and comparison_mean is not None:
price_comparison = {
"comparison_price_mean": comparison_mean,
"price_difference": abs(round(float(comparison_mean) - float(own_mean), 4)),
}
if include_comparison_details:
price_comparison["comparison_price_min"] = comparison_stats.get("price_min")
price_comparison["comparison_price_max"] = comparison_stats.get("price_max")
seconds_until_start = None
seconds_until_end = None
if response_segments:
first_dt = datetime.fromisoformat(response_segments[0]["start"])
last_dt = datetime.fromisoformat(response_segments[-1]["end"])
seconds_until_start = max(0, int((first_dt - now).total_seconds()))
seconds_until_end = max(0, int((last_dt - now).total_seconds()))
battery_info = _build_battery_info(
current_soc_kwh=current_soc_kwh,
target_soc_kwh=target_soc_kwh,
capacity_kwh=capacity_kwh,
requested_energy_needed_kwh=requested_energy_needed_grid_kwh,
charging_efficiency=charging_efficiency,
achieved_soc_kwh=achieved_soc_kwh,
must_reach_soc_kwh=must_reach_soc_kwh,
)
if relaxation_applied and achieved_soc_kwh < target_soc_kwh - 1e-6:
battery_info["target_met"] = False
deadline_info = planning_result.get("deadline")
if deadline_info is not None:
deadline_info = dict(deadline_info)
deadline_info["source"] = deadline_source
if capacity_kwh is not None and capacity_kwh > 0:
deadline_info["achieved_soc_percent"] = round(deadline_info["achieved_soc_kwh"] / capacity_kwh * 100.0, 2)
deadline_info["must_reach_soc_percent"] = round(
deadline_info["must_reach_soc_kwh"] / capacity_kwh * 100.0, 2
)
response: dict[str, Any] = {
"home_id": home_id,
"search_start": search_start.isoformat(),
"search_end": search_end.isoformat(),
"must_finish_by": must_finish_by_dt.isoformat() if must_finish_by_dt else None,
"intervals_found": True,
"currency": currency,
"price_unit": price_unit,
"battery": battery_info,
"charging": {
"mode": schedule_data["mode"],
"charge_power_w": max_charge_power_w,
"min_charge_power_w": min_charge_power_w,
"charge_power_steps_w": charge_power_steps_w,
"grid_import_limit_w": grid_import_limit_w,
"effective_max_charge_power_w": schedule_data["effective_max_power_w"],
"total_duration_minutes": len(scheduled_intervals) * INTERVAL_MINUTES,
"total_energy_kwh": round(schedule_data["total_grid_energy_kwh"], 6),
"stored_energy_kwh": round(schedule_data["total_stored_energy_kwh"], 6),
"total_cost": round(total_cost_base * unit_factor, 4),
"avg_price_per_kwh": round(avg_price_per_kwh_base * unit_factor, 4),
"schedule": {
"segment_count": len(response_segments),
"segments": response_segments,
"intervals": response_intervals,
"seconds_until_start": seconds_until_start,
"seconds_until_end": seconds_until_end,
**stats,
},
},
"deadline": deadline_info,
"economics": planning_result.get("economics"),
"economics_filter": planning_result.get("economics_filter"),
"price_comparison": price_comparison or None,
"relaxation_applied": relaxation_applied,
"warnings": warnings or None,
}
if relaxation_applied:
response["relaxation_steps"] = relaxation_steps
if resolved_refs:
response["_resolved"] = resolved_refs
return response