Cookie Policy
The English version of this policy is the authoritative one. Translations are provided for convenience.
Sustainergy.ai
Last updated: 8 March 2026
This Cookie Policy explains how Sustainergy.ai (“Sustainergy”, “we”, “our”, or “us”) uses cookies and similar technologies on our website and related digital services.
This policy should be read together with our Privacy Policy, which explains how we process personal data.
Our use of cookies complies with the General Data Protection Regulation (EU) 2016/679 (“GDPR”), the ePrivacy Directive (2002/58/EC), and applicable national legislation.
1. Company Information
Website operator and data controller:
VoltAI BV (trading as Sustainergy.ai)
Hessenweg 251, 3791 PH Achterveld, The Netherlands
Phone: +31 6 11 08 73 00 · Email: info@sustainergy.ai
2. What Are Cookies
Cookies are small text files stored on your computer, tablet, or mobile device when you visit a website.
They are widely used to enable websites to function properly, improve efficiency, and provide information to website operators.
Cookies may store technical information such as:
- session identifiers
- authentication tokens
- user preferences
- browsing behaviour
- analytics data
- security verification data
Cookies may be classified as:
Session Cookies: Temporary cookies that are deleted when the browser is closed.
Persistent Cookies: Cookies that remain stored on your device until they expire or are deleted.
3. Legal Basis for Using Cookies
Our use of cookies is based on the following legal grounds under Article 6 of the GDPR:
Article 6(1)(a) — Consent: For non-essential cookies such as analytics or marketing cookies, we rely on your consent.
Article 6(1)(f) — Legitimate Interest: For strictly necessary cookies required for website functionality, security, and infrastructure stability.
In accordance with the ePrivacy Directive, non-essential cookies are only placed after obtaining your consent through our cookie banner or preference manager.
You may withdraw your consent at any time.
4. Types of Cookies We Use
4.1 Strictly Necessary Cookies
These cookies are essential for the operation of the website and cannot be disabled in our systems.
They are typically set in response to actions made by you such as:
- logging into secure areas
- submitting forms
- managing sessions
- load balancing
- security verification
Without these cookies, parts of the website may not function properly.
Legal basis: GDPR Article 6(1)(f) – legitimate interest
4.2 Security Cookies
Security cookies help us detect and mitigate malicious activity and protect our infrastructure.
These cookies may be used for:
- bot detection
- fraud prevention
- DDoS mitigation
- rate limiting
- firewall protection
Security mechanisms may be implemented through infrastructure providers such as Cloudflare or similar content delivery and security services.
Legal basis: GDPR Article 6(1)(f)
4.3 Performance and Analytics Cookies
These cookies allow us to understand how visitors interact with our website.
They collect information such as:
- pages visited
- session duration
- referring sources
- user navigation behaviour
- system performance metrics
The information collected is generally aggregated and anonymised and used to improve the performance, usability, and reliability of the website.
Examples may include:
- web analytics tools
- server-side analytics
- performance monitoring tools
Legal basis: GDPR Article 6(1)(a) – consent
4.4 Functional Cookies
Functional cookies enable the website to remember choices you make and provide enhanced features.
Examples include:
- language preferences
- user interface settings
- saved preferences
- region settings
These cookies improve usability and personalization.
Legal basis: GDPR Article 6(1)(a) – consent
5. Third-Party Cookies
Some cookies may be placed by trusted third-party service providers who support our infrastructure or analytics capabilities.
These may include services related to:
- cloud infrastructure
- security services
- content delivery networks
- analytics and performance monitoring
- embedded content
Examples of infrastructure providers may include:
- content delivery networks (CDNs)
- DDoS protection services
- analytics providers
- monitoring services
These third parties may process limited technical data such as:
- IP addresses
- browser type
- device identifiers
- usage patterns
Such processing is governed by the respective third party’s privacy policies.
Where applicable, we ensure appropriate safeguards under GDPR Chapter V for international data transfers.
5.1 Third Parties We Use
The section above describes the kinds of third party we work with. This section names them. None of them loads before you have answered the cookie banner, and each one is tied to the choice shown next to it.
Google Tag Manager — Loads and manages the measurement tags below. It sets no cookies of its own, and it is not loaded at all until you have made a choice. Consent category: Statistics. Privacy policy: https://policies.google.com/privacy
Google Analytics 4 — Measures how the website is used: pages visited, session duration, referring source and navigation behaviour. Consent category: Statistics. Privacy policy: https://policies.google.com/privacy
Ahrefs Analytics — Website analytics, used alongside Google Analytics for traffic and referral reporting. Consent category: Statistics. Privacy policy: https://ahrefs.com/privacy
Snitcher — Identifies the organisation a visit is likely to come from, by looking up the network address, so that enquiries can be put in context. It does not identify you personally. Consent category: Marketing. Privacy policy: https://www.snitcher.com/privacy-policy
Google Ads — Measures the effect of advertising campaigns. Consent category: Marketing. Privacy policy: https://policies.google.com/privacy
Sustainergy CRM (crm.sustainergy.ai) — Our own customer system. It records which pages an enquiry came from, so that a request for contact can be answered with its context. Consent category: Marketing. Privacy policy: https://sustainergy.ai/privacy-policy/
OpenStreetMap — Shows the map on the contact page. Nothing is requested from OpenStreetMap until you press Accept on the map itself. Consent category: Preferences. Privacy policy: https://osmfoundation.org/wiki/Privacy_Policy
Google Maps — Available as an alternative map provider. Not currently used on any page. Consent category: Preferences. Privacy policy: https://policies.google.com/privacy
You can change or withdraw your choice at any time through the “Cookie settings” link at the bottom of every page.
6. Server Logs and Technical Data
Like most websites, our servers automatically record certain information when users access the website.
This may include:
- IP address
- browser type
- operating system
- referring URL
- requested pages
- timestamps
- error logs
This information is primarily used for:
- infrastructure security
- debugging
- performance monitoring
- abuse prevention
Server logs are processed under legitimate interest (GDPR Article 6(1)(f)).
7. Cookie Consent Management
When you first visit our website, you may be presented with a cookie consent banner allowing you to:
- accept all cookies
- reject non-essential cookies
- customise your cookie preferences
Your consent preferences are stored using a consent management cookie.
Consent records may be stored to demonstrate compliance with GDPR Article 7 (Conditions for Consent).
You can update your preferences at any time through the cookie settings on our website.
8. Managing Cookies
Most web browsers allow you to control cookies through browser settings.
You can:
- delete cookies already stored on your device
- block cookies entirely
- restrict certain categories of cookies
- receive alerts before cookies are stored
Please note that disabling cookies may affect the functionality of the website.
Instructions for managing cookies can usually be found in your browser’s help section.
9. Data Subject Rights
Under the GDPR, you have the right to:
- access your personal data (Article 15)
- rectify inaccurate data (Article 16)
- erase personal data (Article 17)
- restrict processing (Article 18)
- data portability (Article 20)
- object to processing (Article 21)
You may exercise these rights by contacting us.
10. Updates to This Cookie Policy
We may update this Cookie Policy periodically to reflect:
- legal or regulatory changes
- technological developments
- updates to our services
The updated version will be published on this page with a revised “Last updated” date.
11. Contact Information
If you have any questions regarding this Cookie Policy or our use of cookies, please contact:
VoltAI BV (trading as Sustainergy.ai)
Hessenweg 251, 3791 PH Achterveld, The Netherlands
Phone: +31 6 11 08 73 00
Email: info@sustainergy.ai