NLR (formerly NREL) PVWatts v8 estimate for a grid-connected PV system at a lati
NLR (formerly NREL) PVWatts v8 estimate for a grid-connected PV system at a latitude and longitude: annual AC energy (kWh), capacity factor, annual solar radiation, and monthly AC energy. Uses the NSRDB typical-year weather file; this is an estimate, not a yield guarantee.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
49 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator
| Category | Everything else |
|---|---|
| Provider host | api.tradeenergy-api.workers.dev |
| Networks | eip155:10, eip155:137, eip155:143, eip155:42161, eip155:42220, eip155:480, eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet, xrpl:0 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.002 | 49 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"azimuth": "180",
"capacityKw": "4",
"lat": "40",
"lon": "-105",
"tilt": "40"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"azimuth": {
"description": "Azimuth in degrees, 0 to 360 (180 = south; default 180)",
"type": "string"
},
"capacityKw": {
"description": "DC system size in kW, 0.05 to 1000 (default 4)",
"type": "string"
},
"lat": {
"description": "Latitude, -90 to 90",
"type": "string"
},
"lon": {
"description": "Longitude, -180 to 180",
"type": "string"
},
"tilt": {
"description": "Panel tilt in degrees, 0 to 90 (default 20)",
"type": "string"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}