Is your solar system losing you money.
A dirty panel or a degraded inverter can cost you hundreds of euros per year without you noticing. Sunnix compares your real production with what you should be producing based on the weather, and tells you exactly how much you're losing.
Don't have a system yet? Simulate for free how much you could save with solar.
Manufacturers on Sunnix
What users say
“Fast and easy”
User · Simulation
“Effective and very clear”
User · Configuration
“Excellent, lots of details and options”
User · Simulation
“Complete”
User · Configuration
“Good way to find productivity and feasibility”
User · Simulation
Is your system producing what it should?
Sunnix compares what your system actually produces with what it should produce based on today's weather. If there's a problem, we tell you right away and calculate how much it's costing you.
Add your system
Sign up and tell us where your roof is. Just your address and system size.
Upload your data
Download your history from your inverter's portal and upload it. Works with any brand.
Sunnix checks every day
Each morning we check the real weather in your area and calculate how much you should have produced.
We alert you if you're losing money
If your system produced less than expected, we tell you why and how much it's costing you in euros.
We don't alert you when it rains. Only when you're actually losing money.
If your system produces less on a cloudy day, that's normal. But if it produces less on a sunny day, there's a problem. Sunnix tells the difference and shows you exactly how much you're losing.
Performance dropped to 52% of the theoretical potential in clear sky conditions.
Have questions or want to see a demo?
Contact us for a personalized monitoring demo or for any questions about how it works.
How much could you save with solar?
Enter your address and find out in 30 seconds how much you can save on your energy bill every year. No registration, no cost.
Real climate data
We use European Commission data for your exact location.
Savings in euros
How much you save on your bill every month and year, in euros.
Payback time
How many years to recover what you spent on the system.
Multiple roof faces
Roof faces pointing different directions? Simulate them all together.
Enter your address
Tell us where your roof is and what system you want to simulate. Takes 30 seconds.
We do the math
Sunnix analyzes the sun, temperatures, and shadows in your area using European Commission data.
See how much you save
Get your annual savings in euros, payback time, and month-by-month production instantly.
Design your system in a few clicks
Pick panels and inverters from manufacturer catalogs, place them on your roof faces, and get a ready-to-share technical quote instantly.
Satellite map
Find your roof on the map and automatically detect its surfaces.
Customize everything
Set the tilt, orientation, and area of each roof face however you want.
Updated catalogs
Panels and inverters from major manufacturers, always up to date.
Ready-made quote
Download the PDF with the complete bill of materials to send to your client or installer.
Installers
Do the site visit, configure the system, and send the quote to your client in minutes.
Designers
Compare different layouts and find the one that produces the most for your client's roof.
Homeowners
Want to know what you can put on your roof? Try it before calling an installer, it's free.
All tools, for free
Simulate, configure, and calculate without paying anything. No credit card required.
How much does it cost to know if you're losing money?
Analyze your system's history or activate daily monitoring. Costs less than a coffee a day. Simulation and configuration are always free.
Find out how much you lost last year
Past AnalysisUpload your inverter's history and find out if you had problems last year. We tell you how much money you lost and why.
Or activate real-time monitoring
Small
Up to 6 kWpStandard residential systems
Cancel anytime
Ideal for classic single-phase home systems.
Medium
Up to 15 kWpLarge roofs or multi-facet
Cancel anytime
Optimized for houses with multiple strings.
Large
Up to 50 kWpCompanies and warehouses
Cancel anytime
Designed for three-phase commercial systems.
Secure payments with Stripe. Cancel online anytime.
Your system could be losing money every day without you knowing.
A dirty panel, a degraded inverter, seasonal shading — invisible problems that cost hundreds per year. Sunnix finds them.
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Solar monitoring, simulation and configuration in one platform
Sunnix is the Italian platform for solar system monitoring via digital twin technology. Unlike traditional monitoring systems, Sunnix requires no sensors, gateways or SIM cards. The system uses PVGIS climate data from the European Commission and real satellite weather to simulate your system's expected production every day, comparing it with the actual production recorded by your inverter.
The free Sunnix solar simulator calculates estimated energy production for any GPS position in Italy and Europe, considering solar irradiance, temperatures, horizon profile and local shading. The configurator lets you design the system directly on your roof map, selecting panels and inverters from updated catalogs of leading manufacturers (LONGi, JA Solar, Huawei, Fronius, SolarEdge, Enphase, Zucchetti). The technical report includes the bill of materials, monthly production curve and investment payback calculation.
Digital twin monitoring auto-calibrates with an adaptive Kalman filter across three weather regimes (sunny, mixed, cloudy). When it detects an anomalous production drop, it identifies the probable cause — panel soiling, hardware fault, curtailment or exceptional weather — and calculates the daily economic loss. Compatible with any inverter on the market: just upload your production data in CSV format.
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New features, development roadmap, and release updates.
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