Transparency

What data we keep, and why.

What Sunnix saves, for how long, and who it goes to. Using the site asks nothing of you: name, phone and email only matter if you open an account or write to a company, and then they go to that company.

The rules, in short

  • We never ask for a contact to give you a number

  • We don't sell or hand data to anyone

  • No targeted ads, and analytics only if you accept cookies

  • Every piece of data expires, as written below

Last updated: 6 November 2026

Estimates on the site

When you run a simulation or a configuration without an account, Sunnix saves it to show you the summary and let you share it with a link.

What is saved

  • The address and the coordinates of the point picked on the map, encrypted in the database
  • Power, panels and, for a configuration, the roof faces you drew (area, tilt, orientation)
  • The estimated production, yearly and monthly, with the accuracy PVGIS returns
  • The creation date

What is not saved

  • Consumption, costs, battery and the other choices made in the summary: they stay in the open page
  • The bill, when the company uploads it to compose your quote, as a PDF or a photo: it's read in their browser, including the text of photos and scans, and the file never leaves it

For how long

48 hours, then it is deleted automatically. If you save it in your account, or made it on a company's link, it stays as long as that account exists.

Sessions

Every estimate opens a technical session, used to run the steps and to count how many estimates are made.

What is saved

  • The coordinates of the chosen point
  • The type (simulation or configuration) and whether Google's roof data was used
  • The status (started or finished) and, if finished, which estimate it leads to

For how long

30 days, then it is deleted automatically.

Your account

The account lets you save estimates and, for companies, use Sunnix Pro. You sign in with a link or a code sent by email: there is no password to keep.

What is saved

  • The email you sign in with
  • A technical cookie that keeps you signed in (not readable by page scripts)
  • The estimates you saved

For how long

As long as the account exists.

From the account you can download a copy of all your data (“Subscription and alerts” → “Your data”; for a company, inside “Company”). Closing the account deletes your sign-in and your estimates; if you are the only person in the company, the company goes too with everything in it, and the Sunnix Pro subscription is cancelled — if there are other people, the company stays and you leave it. An active monitoring subscription — on one of your systems, or on a customer's system you are paying for — blocks the closure instead: we tell you which system, and it has to be cancelled first, because we don't close an account with a charge still running.

Companies on Sunnix Pro

A company on Sunnix Pro has its own page and links to send to customers. To run them, Sunnix keeps the data the company writes.

What is saved

  • Company name, VAT number, contacts, logo and headquarters: the headquarters is used to list it among nearby companies
  • Price list, prices and the products it quotes with
  • The quotes it composes and the proposals it sends: products, costs and, when it reads them from a bill or types them, the customer's month-by-month consumption and the average price they pay. They are used to redo the same sum when the customer opens the link; the bill document and the name are not there
  • Its links and their counts: opens, estimates, requests. Without knowing who: at most the town, to tell the company someone is looking
  • Who accepted the data processing agreement for the customers' data, when and which version: it's the Art. 28 GDPR agreement, and without this it can't be shown to exist

For how long

As long as the company's account exists. If the subscription ends and is not renewed, everything is deleted twelve months later, after two notices.

The email the owner signs in with never appears on public pages: only the one the company writes to be contacted is shown.

The people in a company

A company on Sunnix Pro can give each of its people their own login. Everyone signs in with their own address, and of each person Sunnix keeps the minimum needed to let them in and to alert them.

What is saved

  • Name and email, written by the owner when adding the person
  • What that person wants to receive by email: the alert on every estimate and the monthly summary, two switches of their own
  • Where they want their alerts, if not at the email they sign in with: it only counts after tapping the confirmation link sent there, and of that link Sunnix keeps only a fingerprint, for two days
  • Who made a link or a proposal: it serves to send the alert to them as well as to the owner, and to let them find their own things

What is not saved

  • No password: you sign in with a link or a code sent to that address, and Sunnix stores none
  • No performance counters per person: «who made it» is a technical fact, «how much they made» is a ranking Sunnix does not build

For how long

For as long as the person is in the company. When the owner removes them, the row disappears and their work stays with the company, without their name next to it.

When Sunnix sets up your company

If you ask for it, or if Sunnix prepares the company before handing it over, a person from Sunnix works inside your account: the page, the price list, the links. They can't touch the subscription, the people or the page's address, and what they create carries nobody's name: it belongs to the company.

What is saved

  • Until when Sunnix can enter: seven days from your request, two weeks after handover
  • Every change Sunnix makes, with the time: you read it in "Company", under "What Sunnix did"
  • For a company prepared and not yet handed over, who at Sunnix prepared it

What is not saved

  • The content of the changes a second time: it's already in your company, and the log only says what changed and when
  • The phone number you leave when asking for help: it reaches Sunnix by email, and isn't kept

For how long

The log stays as long as the company does. You close the door whenever you want, and from the next request Sunnix can't enter. A company prepared and never handed over is deleted after two months.

A company's systems

A company on Sunnix Pro opens a system with an address, even before the estimate, and inside it live the estimates, proposals, installation and the work in the years after. For each system Sunnix keeps the history: what happened, and which person in the company did it.

What is saved

  • The system's address and coordinates, encrypted in the database (AES-256-GCM) with a key only our server has, and what kind it is: house, warehouse or land
  • The name the company gives it to recognise it, if it gives one (“Rossi house”, “Via Roma warehouse”): one line that the company writes and changes, encrypted in the database (AES-256-GCM) with a key only our server has
  • The street as the company typed it in the address field, before picking Google’s suggestion: it identifies the system next to the map, where Google’s address cannot be shown. It is encrypted like the name
  • Who in the company opened it, and who follows it if the company chooses
  • The steps taken on the system — the estimate saved, the site visit, each installation stage — with the person who took them and the day
  • How it is built, if the company writes it down: the roof sections with their modules, the module and inverter power, the batteries (how many and of what capacity) and the platform where its production is watched, for example the inverter's portal. They are data about the system, not about whoever lives there
  • The 3D canvas scene the company uses to estimate a field or a carport and, if it took the boundary from the land registry, the parcels it comes from (sheet and number, as the cadastral map writes them): never the owner, whom the map doesn't have
  • Whether it is archived
  • Requests from links: when someone on a company's link asks for a quote, their estimate — address and power — appears among that company's requests, with the day of the request

What is not saved

  • No customer data: no name, phone or email. The system is recognised by its address, or by the name the company gives it
  • No free notes: there is no field to write them in
  • No ranking of people: the history says who took a step, not who takes the most
  • We keep neither the name nor the contact details of whoever asks for a quote: they go only to the company, in the request email

For how long

As long as the company exists. An archived system stays, out of the list; when the company closes its account, its systems go with it. A request the company dismisses leaves its list; the estimate stays like the link's other estimates.

Orthophotos

A company on Sunnix Pro can draw the panels on a photo of the roof seen straight from above (the orthophoto) instead of on the map: Google's, or one from its own drone flight, which it uploads. The quote prints the photo the drawing was made on.

What is saved

  • Google's orthophoto around the address (140 metres), the heights of the same place, which points are roof and how much sun each gets, in the company's folder, when the company picks it in the editor or opens the pre-filled roof
  • Google's orthophoto of a large field (from 190 metres to almost two kilometres a side, from 10 cm to one metre per pixel), the photo only, in the company's folder, when the company puts it under the 3D canvas
  • Pitch and direction of the roof sections measured on those heights, when the company draws on the orthophoto: they are kept in the estimate, like those typed by hand
  • The company's flight orthophotos: the photo straightened with north up, the heights if it uploads them, its four sides on the ground, the flight date and who uploaded it
  • The piece of photo that goes under the panels of a quote, saved with the estimate

What is not saved

  • The original drone file: the browser reads it on the uploader's computer and sends only the straightened photo and the heights
  • No data about whoever lives in the house: the photo is found from the address
  • The editor's map imagery: it never leaves Google Maps

For how long

Google's orthophoto, its heights and the roof's sun 30 days, as Google's terms require; then they are removed, and requested again if needed. Flight orthophotos until the company removes them, from the editor, or closes its account. The piece printed in a quote stays with the estimate.

Datasheets and sentences read by AI

A company on Sunnix Pro can have the AI read the datasheets of the products it sells, to fill in its price list, and write in one sentence what goes into a quote (“24 panels, an inverter, installation and grid connection included”). They are read by Gemini, Google’s model, on the paid plan: Google does not use what it reads to train its models, but keeps it for up to 55 days to check for abuse, and may store it outside the European Union too. The sentence travels with the names and sizes of the price list items, never the prices; Sunnix removes phone numbers and e-mails before sending it. Sunnix checks and counts, and the company chooses what to add. If the company asks to look the datasheet up online, Google (through Gemini) only receives the brand, model and size of the product; Sunnix downloads the PDF it finds only from the manufacturer’s website, never from a reseller or another site (if Google finds the product page, Sunnix looks for the datasheet among that page’s links, on the same site), and reads it like an uploaded datasheet, showing where it comes from and Google’s search suggestions. Every PDF, downloaded or uploaded, is checked before it is kept: one with programs, attachments or hidden actions is not kept.

What is saved

  • The products the company adds to its price list, with the data read, when it presses “Add”
  • The lines the company adds to the quote, when it saves it: like the ones written by hand
  • How many readings the company made in a month, for the monthly cap: a number, nothing else
  • The PDF datasheet of the products the company adds, among its documents: it is downloaded separately with its quotes, and the customer downloads it from the link. One found online is downloaded again by Sunnix from the same address, only from the manufacturer’s website and only when the product is added, or when the company adds it to a product in its price list that didn’t have one

What is not saved

  • The copy of the PDF the AI reads: it is deleted as soon as it has been read. The datasheet kept with the product is a separate upload, and only for the products added
  • The sentence written in the quote: it goes to Gemini and nowhere else
  • The datasheet text, the sentence and Gemini’s answers: logs keep only length, times and cost
  • The PDF found online and the search results: the copy read is deleted, and nothing of the search is kept

For how long

The PDF and the sentence for the time of the reading. The products until the company removes them from the price list, the lines with their quote; the reading count goes with the company. The datasheet kept with the product until the company removes it from the product and deletes it among its documents, or closes the account.

Bills read by AI

When Sunnix’s reader can’t confirm the numbers on a bill (a crooked photo, a supplier it has never seen), a company on Sunnix Pro can have it read by AI. The bill doesn’t leave as it is: in the company’s browser, Sunnix copies onto blank pages only the numbers and bill words needed for the sums (consumption, amounts, dates, time bands, the lines of the receipt) and leaves everything else out: name, addresses, tax code, POD, IBAN, contract codes, signatures, QR codes and barcodes. Before sending, it reads the copied pages again and removes any tax code, IBAN, POD, email or phone number it still finds; the company sees them exactly as they’ll be sent and can remove more. The pages are read by Gemini, Google’s model, on the paid plan: Google doesn’t use them to train its models, but keeps them for up to 55 days to check for abuse, and may store them outside the European Union. Gemini answers only with numbers and fixed choices, never with text, and Sunnix checks them with the same cross-checks as a bill read in the browser.

What is saved

  • Nothing from the bill: the numbers fill the page’s fields, like those read in the browser, and stay only if the company saves the estimate
  • How many readings the company used in a month, for the monthly cap: a number, nothing else

What is not saved

  • The original bill: it never leaves the company’s browser
  • The copied pages and Gemini’s answer: they pass through the Sunnix API without being written anywhere
  • In Sunnix’s logs, only how many pages, the timing, the tokens, the cost, how many numbers were read and whether Gemini says it saw personal data: never a number from the bill

For how long

The copied pages for the time of the reading at Sunnix; at Google for up to 55 days, as the terms of the Gemini API paid plan say. The numbers read stay on the page until the company saves the estimate or closes it.

Bills sent to teach the reader

When the Sunnix reader cannot confirm a bill, the company can prepare a copy without personal data and send it to us, so the reader learns that supplier. The copy is made in the company’s browser: only the bill’s numbers and words remain, with their positions on the page, and every other word becomes «□». Sunnix receives nothing on its own: the company downloads the file, looks at it and decides whether to email it to info@sunnix.it.

What is saved

  • The file the company sends us: the bill’s numbers and words with their positions, the supplier, the day it was prepared and how many pages it had

What is not saved

  • The bill: the PDF never leaves the company’s browser
  • Names, addresses, tax code, VAT number, POD, IBAN, phone numbers, emails and contract codes: they are not in the file, nor any word that is not a bill word

For how long

As long as it helps to test the reader: the file becomes a test case, on the computer of whoever develops the reader, and never goes on the site.

If you come from a company's link

An estimate made on a company's link belongs to that company: it sees it, with its prices. For this data the company is the controller, and Sunnix processes it on its behalf.

What is saved

  • The estimate, like those on the site
  • If the company emails you a proposal: your address, encrypted, to recognise you when you reply
  • Your reply to the proposal and any comment
  • If you ask for a job from the system check, or from the panel cleaning check, without booking: address (encrypted), type and size of the system, the suggested service and one line on what the check found, among the company's requests. Not your name or phone: those only go in the email to the company

What is not saved

  • The name, phone and email you write to ask for a quote: they go to the company by email, and Sunnix doesn't keep them
  • The consumption you type in the estimate, if you send it with the request: you see it before sending, it goes to the company by email, and Sunnix doesn't keep it
  • Your name on the PDF: it stays in your browser

For how long

As long as the company has its account, and at most twelve months after its subscription ends.

If a company sends you a quote for a job

A thermography, a cleaning, an inspection: the company writes the quote, sometimes with photos of your system. It's theirs: the company is the data controller, and Sunnix processes this data on its behalf.

What is saved

  • The quote: items, prices, what's included, notes and the system's address
  • If it is a supply with no address for your company: its name and registered address, encrypted, which the company uses to keep the quotes it makes you together. Never a phone number or an email, and never if you are a private customer
  • The photos the company adds, in a private space: they open only with a link that expires within hours, and whoever has the quote link can see them
  • Your answer and any comment, as for the other proposals; with the «yes», the optional items you chose and — if you're a private customer — whether you asked to start before the 14-day withdrawal period

What is not saved

  • Your name, if you are a private customer or the quote is for a system: the company writes it on the sheet, and it stays in their browser and in the link they send you, after the # sign
  • The location inside the photos: the phone saves it in the file, and we remove it before uploading
  • Your system's production on the link, unless you signed in with the email the quote was sent to

For how long

As long as the company has its account: if it closes it, quotes and photos are deleted with it. A photo removed from the quote is deleted right away, unless a version you were sent still shows it; a photo uploaded and never saved in a quote is deleted after a day.

If you supply a company

A company on Sunnix Pro can save its suppliers, to address a job's material list to them. The company is the data controller for these data, and Sunnix processes them on its behalf.

What is saved

  • The company name and, if the company writes it, the ordering email, encrypted: only that company sees them, and they end up on the material list it sends you
  • What you supply (panels, inverters, mounting…), picked by the company from a few fixed options: it is used to send you only the lines that concern you

What is not saved

  • A contact person's name, a phone number, an address: the form doesn't ask for them
  • The orders: the company downloads or writes the list and sends it to you itself. Sunnix doesn't write to you
  • Prices and the customer: the material list doesn't carry them

For how long

Until the company removes you from its suppliers or closes its account, and at most twelve months after its subscription ends.

If a company prepares your plant’s declaration of conformity

A company on Sunnix Pro can download the declaration of conformity form (DM 37/2008) already filled in with the plant’s data. The PDF is made in its browser: the company signs it and files it.

What is saved

  • Nothing new about the plant: the power, the address and the materials come from the plant and the accepted quote, which Sunnix already has
  • The details of the company and of who signs for it (owner, technical manager, designer, Chamber of Commerce registration) and the materials it usually installs, such as cables and boards: they stay in its profile, for next time, and don’t appear on its pages

What is not saved

  • The client’s and the owner’s names: the company writes them in the window and they end up only in the PDF, never on the server or in the browser
  • The PDF: it is made in the company’s browser and doesn’t go through Sunnix

For how long

Sunnix keeps nothing of the declaration. The details of the company and of who signs stay in its profile until the company changes them or closes its account.

If a company confirms your order

When you accept a quote, on the link or outside Sunnix (signed, by email, in person), the company can mark it on the version you accepted and prepare the order confirmation: the lines and prices of that version, with payment, shipping and notes. After the “yes” you can download it too, from your link.

What is saved

  • On the accepted version: the day of the “yes”, whether it came from the link or was marked by hand, how (signed, by email, in person) and which person at the company marked it
  • The optional lines you chose, recounted on that version
  • Payment, shipping (courier, delivery or pickup, the day, where, the costs) and notes of that order, the day the company says it sent it and, for a supply, the days it marks it shipped and delivered

What is not saved

  • Your name, your tax code or VAT number: the company writes them in the window and they end up only in the PDF
  • Phone numbers and emails: if the company writes them in the notes or the delivery address, they go only on its PDF; Sunnix saves the notes without that sentence
  • The confirmation PDF: it is made in the browser of whoever downloads it and doesn’t go through Sunnix

For how long

They stay with the quote version, as long as the company keeps it. A “yes” marked by hand can be removed by the company; the one you gave on the link can’t.

If you book an appointment on a company's calendar

On a company's calendar you pick the day and time of a site visit, a thermal inspection or a service visit. The appointment belongs to the company: it is the controller of this data, and Sunnix processes it on its behalf.

What is saved

  • What you booked, the day, time and length of the appointment, and whether it is confirmed, moved or cancelled
  • The address of the appointment, encrypted in the database, and the estimate you started from, if there was one
  • The fingerprint of the code that moves or cancels it: the actual code is only in your link
  • If you come from the system check: what kind of system it is and one line on what the check found (for example «13% drop, never washed»), which the company finds in the system's folder when it confirms

What is not saved

  • Name, phone and email: they go to the company by email, and Sunnix doesn't keep them
  • Reminders: your phone's calendar does them, from the file you download. Sunnix doesn't write to you

For how long

As long as the company has its account: if it closes it, its appointments are deleted with it.

Nearby companies

Below an estimate on the site we show up to three Pro companies within 60 km, found from the estimate's coordinates. Sunnix doesn't pass contacts to anyone: you choose whether to open a company's estimate and write to it.

What is not saved

  • Who looked at which companies: the search leaves no trace, and companies know nothing until you write

If you report content

Through the "Report content" link at the bottom of a company page you tell us what's wrong, with your name and email. The report reaches Sunnix by email, and you get a receipt with date and time.

What is not saved

  • The report does not go into any table: it sits in Sunnix's inbox, where we decide and reply
  • Your name and email are not given to the reported company, unless strictly necessary

For how long

The email stays in Sunnix's inbox for as long as it is needed to decide and to answer for a contested decision.

The anti-bot check on forms

When you send a form on the site (a request to a company, an appointment, a contact) or ask for the sign-in link, your browser runs an invisible check, Vercel BotID, that tells a person from a program. There is nothing to click, and a submission from a program is stopped.

What is saved

  • Vercel receives technical signals from the browser and the request headers, not what you wrote in the form
  • The check may leave a technical cookie in the browser (it starts with "KP_") used only for this

What is not saved

  • The result of the check: Sunnix uses it to send or stop that submission, and does not keep it

Checks and monitoring

If you connect a plant, every day Sunnix works out how much it should have produced with the real weather and compares it with what it produced.

What is saved

  • The plant: coordinates, power, roof faces, panels and inverter
  • Daily production read from the inverter's portal. Portal credentials are encrypted (AES-256-GCM) and never go back to the browser
  • Each day's estimate, the weather used, the alerts and the notes you write in the log
  • Your phone notification subscription, if you turn it on

For how long

As long as the subscription lasts. After closing, the data is deleted within 30 days. One exception: if the company that installed the system closes its account, and the system came from a proposal you accepted, we hold it for 24 months — so you can claim it into your own account from the link you already have.

The price observatory

Anyone who installed a plant can say what they paid, to help those still deciding. Entries are anonymous.

What is saved

  • Price, power, area and, if you like, details of the plant and what was included

What is not saved

  • Who sent it: no name, email or phone

For how long

It can be completed in the first 24 hours and removed whenever you want, from the same browser. Figures are only shown aggregated.

Google

The map, the address search and the roof data come from Google.

  • Google Maps receives the address you type and the map's coordinates
  • The Solar API receives the building's coordinates, and Sunnix keeps the answer (roof shape, sun hours) tied to those coordinates: it's data about the building, not about you
  • For a company's estimates, if it picks it in the editor, the Solar API also provides the roof orthophoto and the heights of the same place: see «Orthophotos»
  • Tag Manager and Google Analytics only start if you accept analytics cookies

Payments

Subscriptions are paid by card, through Stripe, or by bank transfer: you ask for it from your account and Sunnix writes to you with the invoice.

What is saved

  • The subscription status and the dates of the paid period
  • For the electronic invoice: SDI code (or PEC), VAT number and, for a natural person, the tax code. These stay with Stripe alongside billing, ten years as accounting law requires
  • If you ask for a bank transfer: the request email, in Sunnix's inbox, with your phone only if you wrote it. Nothing stays in the database

What is not saved

  • Card details: Stripe handles them and they never pass through Sunnix

Average values used in calculations

The costs estimated by Sunnix are based on average market values collected from public and private sources.

Here are all the average cost items on Sunnix

ItemUsed valueAverage range
Inverter (≤ 6 kW)150 €/kW120-180 €/kW
Inverter (≤ 20 kW)105 €/kW90-120 €/kW
Inverter (≤ 60 kW)67 €/kW50-85 €/kW
Inverter (≤ 250 kW)47 €/kW40-55 €/kW
Inverter (> 250 kW)32 €/kW25-40 €/kW
Battery storage 700 €/kWh500-1000 €/kWh
Installation + labor 250 €250-350 €
Battery installation per kWh 120 €/kWh90-150 €/kWh
Site mobilization 300 €200-400 €
Electrical panel adjustment 500 €(Only if requested)400-600 €
Scaffolding 250 €/floor200-300 €/floor

Currently, costs are calculated on average market values. We are working to make the algorithm increasingly precise and closer to real cases: in the future, estimates will also take into account more concrete factors beyond system values. Furthermore, it will be possible to customize average values to adapt them to your case.

Who else sees the data

The services Sunnix relies on, and what for.

  • Supabase: the database, sign-in and the files companies upload, on servers in Europe
  • Vercel: the site and the API, on servers in Europe
  • Twilio SendGrid: emails
  • Stripe: payments
  • Upstash: anti-abuse limits, with the IP address encrypted, on servers in Europe
  • Google: map, roof data and, with consent, analytics
  • Open-Meteo and PVGIS: weather and yield, and they only receive coordinates
  • INGV: the ground heights (TINITALY) of fields in the 3D canvas, and it only receives the coordinates of the area
  • Agenzia delle Entrate: the land-registry parcels around the place and the boundary of the one tapped in the 3D canvas, and it only receives the coordinates of the box or the point, from Sunnix's server
  • Ministry of Culture (SITAP), Ministry of the Environment (National Geoportal) and, where SITAP doesn't reach, the Sicilian Region and the Autonomous Provinces of Trento and Bolzano: landscape constraints, Natura 2000 sites and protected areas at a system's location, when the company checks them on the system page, and they only receive the system's coordinates, from Sunnix's server; the answer stays a week in the server's memory, and is not saved
  • CookieYes: your cookie choice

The rest is in the Privacy Policy.

If Sunnix changes how it handles data, this page and the date at the top change first. If you find something Sunnix does that isn't here, we treat it as a bug.

A question about your data?

Write to us: a person answers, not a form. And if you find something Sunnix does that this page doesn't say, to us that's a mistake to fix.

Write to us