Solar Forecast Viewer

Minimal viewer for forecast.solar.

Shows today's hourly watts, day totals, and energy still left today.

No chart libraries. No date helpers. Just fetch(), simple parsing, and an inline SVG chart.

Tool

Inputs

simple mode

Latitude

Location used for all strings.

Longitude

Use decimal degrees.

API key (optional)

Added as ?apikey=... when filled.

PV strings Tilt is fixed at 45° for all rows.

C1 · String 1

Compass azimuth, north is up.

Azimuth (°)

API azimuth: -50

C1 · String 2

Compass azimuth, north is up.

Azimuth (°)

API azimuth: 130

C2 · String 1

Compass azimuth, north is up.

Azimuth (°)

API azimuth: -130

Status

Ready

Fetch the forecast to populate results.

API time

—

Taken from the API response, not your browser clock.

JSON

Results

forecast.solar

Today total

—

Forecast for the full day.

Remaining today

—

Energy still forecast from now to sunset.

Tomorrow total

—

Next day total if present.

Rate limit

—

Remaining calls from the API response.

Today hourly watts

Fetch data to draw the chart.

Hourly table

One network call per string. No chart library. All charting is inline SVG.

About

lightweight

The chart uses result.watts grouped by hour.

Remaining today is estimated from result.watt_hours using the API's own current time.

Each azimuth card shows the panel direction relative to north.