Privacy statement
Last updated: 2 November 2026
1. Who we are
TG Advisory is an independent energy advisory practice (KVK 42177765) based in Utrecht, the Netherlands. TG Advisory is the controller of the personal data described in this statement, under applicable data protection law, including Regulation (EU) 2016/679 (General Data Protection Regulation, GDPR). This statement covers visits to tgadvisory.eu, enquiries and assignments. Questions about privacy go to tiemen@tgadvisory.eu.
2. Data we collect
Data you provide. Name, email address, phone number, organisation, role, your messages, and correspondence and documents exchanged during an assignment.
Data collected automatically. Our hosting provider records technical data when you visit the site, such as IP address, browser type, referring page and time of the request. We do not use it to identify visitors.
3. Why we use your data
| Purpose | Legal basis (GDPR) |
|---|---|
| Answering enquiries and keeping in touch | Legitimate interest (Art. 6(1)(f)): handling business enquiries and maintaining professional relationships; for individuals and sole traders, steps before a contract (Art. 6(1)(b)) |
| Carrying out and invoicing assignments | Contract (Art. 6(1)(b)) for individuals and sole traders; otherwise legitimate interest (Art. 6(1)(f)): performing the assignment and managing the client relationship; legal obligation for bookkeeping and tax (Art. 6(1)(c)) |
| Keeping the website secure and working | Legitimate interest (Art. 6(1)(f)): keeping the site secure and available |
4. Cookies
This website does not use cookies, analytics or advertising trackers. Links to other sites, such as LinkedIn, are plain links; once you open them, that site’s privacy policy applies.
5. Sharing your data
We do not sell personal data. We share it only with service providers that help us run the practice (hosting, email, cloud storage, IT, accounting) under agreements that protect your data, with authorities where the law requires it, and with professional advisers, such as an insurer or lawyer, where needed to obtain advice or meet legal obligations.
6. Transfers outside the EEA
Some providers may process data outside the European Economic Area (EEA: the EU plus Iceland, Liechtenstein and Norway). Such transfers rely on an adequacy decision or the European Commission’s standard contractual clauses, in line with the GDPR.
7. How long we keep data
- Enquiries that do not lead to an assignment: up to 12 months after the last contact.
- Assignment files: 7 years after the assignment ends.
- Invoices and financial records: 7 years, as Dutch tax law requires. Website server logs: kept by the hosting provider for a short period only.
After that, data is deleted or anonymised.
8. Security
We protect personal data with technical and organisational safeguards appropriate to the risk. Where the law requires, we report data breaches to you and the authorities.
9. Your rights
Under the GDPR you can ask us for access to your data, correction, deletion, restriction of use or a portable copy, and object to processing based on legitimate interest. Email tiemen@tgadvisory.eu; we may ask you to confirm your identity and aim to reply within one month. You can also complain to the Dutch Data Protection Authority (Autoriteit Persoonsgegevens).
10. Changes
We may update this statement. The date at the top shows the latest version.