Know what your
solar panels will
produce tomorrow.
The forecast accuracy once reserved for megawatt parks — now for every PV system, from a single rooftop to utility scale.
Free tier included · no credit card required
400k+
calls / mo
15 min
resolution
+7 days
forecasts
Tomorrow
53 kWh
Peak
8.6 kW
Updated
10 min
Trusted across research, integrations and business
WHAT'S NEW IN 2.0
A simpler API.
A lot more headroom.
Fixed sites with a site ID
Configure a location once — orientation, power, module tech, shading — and store it. From then on every request is just GET /v2/forecast/{site_id}. No more giant query strings.
Multiple solar arrays
Store many arrays per site and get the forecast for the whole system in a single request.
Variability band
For today and tomorrow, see the range your forecast is likely to land in. Only available in Europa and not in all plans.
Our most advanced engine, now in every plan
Yes, even the free tier. Plans differ only in how often your forecast refreshes.
Calibration & monitoring Beta
Upload your measured production and pvnode learns how your site truly behaves — then folds it back into every forecast.
See how
Much higher limits, for everyone
Forecast caching lets us significantly increase limits for all users. Quotas are shared per endpoint, so you can use them across your sites however you like and monitor usage live.
Forecasts calibrated
to your real system.
Upload your measured production and pvnode learns how your site really behaves — detecting each array's true geometry, performance and shading, then folding it back into your forecasts and history. Built on 20+ years of performance assessment.
01 · GEOMETRY
Detected, not guessed
We reconstruct each array's true tilt and orientation straight from its production — and flag where it drifts from what you configured.
02 · PERFORMANCE
How your system really performs
See how each array measures up to expectation. 100% means spot on — anything less captures real-world degradation and soiling.
03 · SHADING
A shading map from the sky
A full-year shading map per array, built from the sun's path — revealing the trees and buildings that cost you yield.
Active beta · available in the web app, included in calibration plans.
Powered by real-time satellite data.
Updated every 10 minutes.
With Nowcasting enabled, your forecast is re-computed every 10 minutes to track cloud movement as it happens. Engineered specifically for PV forecasting, and one of the most accurate on the market.
Outside of Europe, updates are every 15 minutes where nowcasting is available.
10-minute refresh
The full forecast is re-run every 10 minutes against the latest satellite observations.
Purpose-built weather model
Based on a high-resolution model, designed specifically for solar.
Same endpoint
No second integration, no new fields to parse — your existing client keeps working as-is.
A weather report
for your PV system.
Open any site and you land straight in the forecast weather view: an up to 7-day PV outlook folded together with high-resolution weather data.
- ✓Default view for every site
- ✓PV production paired with the weather behind it
- ✓Built for every owner, whatever the experience level
HOW YOU USE IT
Three ways, one engine.
FOR DEVELOPERS
Configure once,
query by ID.
Your site stores the whole configuration. Requests collapse to a single ID — clean, cacheable, and easy to read. Same pattern for forecast and history.
import requests
site_id = "site_a1b2c3.."
response = requests.get(
f"https://api.pvnode.com/v2/forecast/{site_id}",
headers={"Authorization": f"Bearer {KEY}"},
)
forecast = response.json()The science behind it
Years of research.
One API call.
Our most advanced engine is included in every plan. Only requests, sites and timeframe are limited.
Satellite Weather Data
High-resolution irradiance and weather data, automatically sourced. Global forecast coverage.
High Spatial Resolution
Satellite data from 1 km² spatial resolution. Best coverage in Central Europe.
Horizon Shading
Automatic terrain-based far shading (25m Europe, 30m global). Row shading and detailed string shading.
Physical Snow Model
Realistic snow loss with slide-off behavior based on actual weather. Physics simulation, not percentages.
Module Technologies
PERC, TOPCon, CdTe and more. Spectral effects, angle-of-incidence losses, configurable albedo and temperature coefficient.
Objective Losses
Technology-dependent low-light and temperature losses, cable losses, and inverter clipping — all included by default.
BEYOND FORECASTING
Need historical data?
We've got that too.
The same engine that powers your forecast also serves historical time series back to 2007.
USE CASES
What people build
with our forecast.
Smart Battery Charging
Optimize charge/discharge cycles based on expected solar production. Maximize self-consumption, minimize grid purchases.
EV Charging Scheduling
Charge your EV when solar surplus is highest. Integrates with EVCC and other smart charging solutions.
Home Energy Management
Plan household loads around solar production. Heat pumps, washing machines, dishwashers — all scheduled by forecast.
Energy Trading
Bid into day-ahead and intraday markets with reliable PV production forecasts. Reduce balancing costs.
COMMUNITY
What people say.
The input of technical parameters and shading scenarios with pvnode is much easier than with established software. Our students were very positive.
Prof. Dr. Bernd Hüttl
Professor, HS Coburg
Tried plenty of forecast services — nothing was as accurate as pvnode. Plus you get nice extras like the temperature outlook.
The best provider out there right now.
I use the pvnode Forecast API with Home Assistant. The precision is impressive [...] I can keep my battery SOC in the optimal range much longer.
Roman F.
Developer · Home Assistant
I've tested quite a few. pvnode is the most accurate for me, with so many options — snow-covered roofs, shading and more.
Almost magically accurate.
I'd used a couple of services and the differences could be noticeable depending on the weather. With pvnode the gap at peak PV was only around 0.5 kW.
PRICING
Every system deserves an accurate forecast.
Over 85 percent of all PV systems are rooftops under 20 kWp — and they get the same engine the megawatt parks do. Choose how precise your forecast should be.
Update limits count model re-runs, not reads — free plan includes 250 cached forecast requests and all paid plans include 3,000 cached forecast requests per month. Need more than one site? Light and Plus let you add extra sites on the billing page.
Every new account starts free — no credit card.
Explore what pvnode can do for 14 days. The trial ends automatically — nothing to cancel.
Free
For trying it out and a private look at your roof.
Light
≈ 2,08€/mo · billed yearly only
The cheapest way into the 7-day forecast.
Plus
≈ 5,00€/mo, billed yearlybilled monthly
Nowcasting, history, calibration — the full package.
Enterprise
CommercialFor products, platforms and research that build on pvnode at scale. The only plan licensed for commercial use. Manage thousands of sites programmatically, skip the app entirely, and let us shape limits and history depth around what you actually ship.
Every enterprise account is set up together with the founders — a quote built around your case.
Commercial license
Use pvnode inside your product or service.
Sites API
Create, update and delete sites in code — no app.
Inline endpoints
Pass config per request, no pre-created site.
No site limits
Scale to thousands, plus temporary auto-deleting sites.
History on demand
Extend to 1 year or back to 2007 on request.
All prices include VAT. Cancel anytime. Free, Light and Plus are for non-commercial use; commercial use requires Enterprise.
Your first forecast in 60 seconds.
Create a site, grab your API key, get a forecast back — free tier, no credit card required.
Already on the V1 API? It stays fully active until 31 December 2026 — plenty of time to migrate at your own pace.
