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Halowerk Off-Grid Weather Alarm
x402
Halowerk Off-Grid Weather Alarm is a paid API for AI agents from solar.halowerk.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Simulates a solar+wind+battery off-grid system over 12–120 hours using DWD MOSMIX_L forecasts and returns a risk alert when renewable coverage drops below a configurable threshold.
Price / call$0.005
Success—
StatusUnknown
How this service works
Uses the nearest current DWD MOSMIX_L station forecast, or a station explicitly supplied by the caller. Global irradiance drives a transparent PV estimate and forecast wind speed drives a stated generic turbine curve; neither replaces a site-specific yield model. A constant hourly load and optional battery are simulated over 12 to 120 hours. The result is an installation-risk signal, not an official weather warning, emergency alert or guarantee of supply.
Output
Returns a risk alert signal indicating whether the simulated off-grid system will sustain the configured load with sufficient renewable coverage. Includes an alert flag with details on shortfall periods (duration, severity), and optionally an hourly time-series of solar generation, wind generation, battery state of charge, net load balance, and renewable coverage percentage across the forecast horizon.
Example use cases
Off-grid cabin weekend risk check
“I have a remote cabin at 47.8°N, 12.1°E with 3 kWp of solar (performance ratio 0.78), no wind turbine, and a 10 kWh battery at 75% charge. My daily load is 2 kWh. Will I have enough power for the next 48 hours, and alert me if coverage drops below 60% for more than 4 hours?”
Wind-solar hybrid farm supply alarm
“Run a 5-day energy balance for my hybrid site at 53.5°N, 9.9°E: 50 kWp solar, a wind turbine with 10 kW capacity, cut-in at 3 m/s, rated at 12 m/s, cut-out at 25 m/s, and a 100 kWh battery currently at 40% state of charge with 20% reserve. Daily load is 30 kWh. Tell me if renewable coverage goes below 50% for 6 or more consecutive hours.”
Pre-storm battery top-up decision
“Before the incoming storm, tell me if my off-grid site at 51.2°N, 6.8°E — 8 kWp solar, 15 kWh battery at 55% charge, 5 kWh/day load — will sustain itself over the next 72 hours with at least 50% renewable coverage. If not, I need to know so I can top up from the grid now.”
Technical details
Endpoint
POSThttps://solar.halowerk.com/off-grid-weather-alarmWhen to prefer
Choose this endpoint when you need a transparent, simulation-based risk signal for an off-grid renewable energy installation using real near-future weather forecast data (DWD MOSMIX_L). It is ideal for autonomous agents that need to proactively warn users before energy shortfalls occur, or for pre-trip checks on remote off-grid properties. Prefer it over generic weather APIs when the question is specifically about whether a solar+wind+battery system will meet a constant load — not just what the weather will be. Not suitable as a replacement for certified yield models or official emergency alerts.
Side effects
- No DWD MOSMIX station found within max_station_distance_km — returns an error indicating no nearby station
- Invalid coordinates (out of range) — validation error
- Battery object missing required fields (capacity_wh, soc_percent) — schema validation error
- Forecast horizon outside 12–120 hour range — rejected with validation error
- Invalid station_id format — rejected by regex pattern
- Load or capacity values of zero or unrealistically large — may produce trivially trivial results
- DWD upstream data temporarily unavailable — upstream fetch error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lat | number | |
| lon | number | |
| wind | object | |
| alert | object | |
| solar | object | |
| battery | object | |
| station_id | string | Optional DWD MOSMIX station id. Use this or coordinates. |
| forecast_hours | integer | |
| include_series | boolean | |
| load_wh_per_day | number | |
| max_station_distance_km | number |
Tags
x402
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