Know what your
solar panels will
produce tomorrow.
Accurate PV forecasts up to 7 days ahead. Built on many years of solar research.
No credit card · Free tier included · API + Studio
Tomorrow
53 kWh
Peak
8.4 kW
Updated
12 min
Powering smart energy products and open-source projects
HOW IT WORKS
Forecast in
three steps.
Sign up free
Create your account in seconds. No credit card required. You get access to Studio and your API key.
Define your PV system
Set location, slope, orientation, and power — visually in the Studio or as API parameters.
Get your forecast
Receive 15-minute power predictions from −30 days to +7 days ahead. View in charts or as JSON.
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.
Delivered through the same /forecast endpoint. No code changes — upgrade to a plan with Nowcasting and the quality improves automatically. Nowcasting is available in selected regions only.
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.
SEE IT IN ACTION
The Studio experience.
Select a location, configure your system, view the forecast — all without writing code.
FOR DEVELOPERS
One request.
Fully customizable.
Pass location and system parameters, choose your output columns, and fine-tune with advanced configuration. Get exactly the time series you need.
import requests
response = requests.get(
"https://api.pvnode.com/v1/forecast",
headers={"Authorization": f"Bearer {KEY}"},
params={
"latitude": 47.848,
"longitude": 12.062,
"slope": 30,
"orientation": 180,
"pv_power_kw": 10
}
)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.
TWO WAYS TO USE PVNODE
Use the Studio.
Or call the API.
No-code dashboard for engineers. REST API for developers. Both use the same forecast engine.
pvnode Studio
Select a location on the map, configure your PV system visually, view the forecast, and export CSV, XLSX, or JSON.
REST API
Simple REST endpoint with JSON response. Get your API key, make a request, get a forecast back. Works with any language, any platform.
The science behind it
Years of research.
One API call.
Many years of PV research condensed into one API. Every model below is included by default — no enterprise tier, no hidden add-ons.
Satellite Weather Data
High-resolution irradiance and weather data, automatically sourced. Global coverage across Europe, Africa and beyond.
High Spatial Resolution
Satellite data starting from 2 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.
COMING SOON
Forecasts calibrated to your system.
Upload your PV production time series and we calibrate the forecast to fit your system uniquely — including automated shading detection and more. In active development.
Not yet available. Current plans unchanged.
BEYOND FORECASTING
Need historical data?
We've got that too.
The same engine that powers our forecast also provides monitoring reference data and historical time series back to 2015.
Historical Time Series
15-minute PV simulation data back to 2015. Stress-test financial models against real weather years, validate your algorithms, or train ML models.
Monitoring Reference Data
High-resolution reference performance for the last 6 months. Compare expected vs. actual output to detect faults, degradation, and soiling.
Also available: Yield analysis (kWh/kWp, 2015–today) and full system modeling (PV + battery + heat pump + loads) are accessible via our API for planning and simulation use cases. See API docs →
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
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
Tried many solutions [...] nothing was as accurate as pvnode.
GitHub User
Open-source contributor
Big kudos to pvnode! Tried a few forecasts, but what these guys deliver is more than top-notch!
GitHub User
Open-source contributor
PRICING
Fair Pricing for Every Need.
Accurate solar forecasts for everyone — from a single rooftop to utility-scale plants.
Every new account starts with a 14-day free trial on Pro. No credit card. No cancellation needed — you just drop to Free when the trial ends.
Hobbyist
billed yearly10-minute updates. Highest accuracy, same /forecast endpoint.
Pro
POPULARPay-per-use for extra sites coming soon
10-minute updates. Ideal for battery dispatch, intraday trading, and live control loops.
All prices include VAT. Cancel anytime. Request limits apply on all plans.
Need something custom? Talk to us →CONTACT
Talk to the founders directly.
No support tickets, no chatbots. You'll hear back from the people who built it. Reach out via email or connect on LinkedIn.
Your first forecast in 60 seconds.
Get your API key or open Studio — free tier, no credit card required.
