Together we're shaping the energy transition through sustainable investments in charging parks, grid-scale storage and renewable energy plants.
XTRA-E® plans, organizes & accompanies – you benefit from day one. Start your risk-free planning now.
Learn MoreBehind every profitable photovoltaic system lies a well-thought-out plan. With XTRA-E® you receive your individual plan as a complete package
Learn MoreXTRA-E® project management – implementing your energy strategy makes your company future-proof.
Learn MoreScale electromobility with powerful charging parks at traffic-optimized locations. Ideal for highway proximity and logistics centers.
Learn MoreStabilize power grids with intelligent battery storage solutions. Attractive returns through frequency regulation and spot market participation.
Learn MoreClean energy generation on unused land. Long-term lease agreements with guaranteed compensation for landowners.
Learn MorePan-regional presence in Germany, Netherlands, Belgium, Luxembourg and Switzerland – close to customers, partners and markets.
The XTRA-E® brand is part of the Green Shark Group and operates from strategically selected locations in Germany and Europe. The decentralized structure enables short distances, fast response times and close cooperation with customers and partners.
Invest securely in the energy transition – starting from €1,000 with attractive returns and maximum risk protection.
The XTRA-E® brand is part of the Green Shark Group and operates from strategically selected locations in Germany and Europe. The decentralized structure enables short distances, fast response times and close cooperation with customers and partners.
economic advantages, security, support and professionalism.
The XTRA-E® brand is part of the Green Shark Group and operates from strategically selected locations in Germany and Europe. The decentralized structure enables short distances, fast response times and close cooperation with customers and partners.
Status: May 2025 | Information obligations pursuant to Articles 13 and 14 GDPR
The controller responsible for processing personal data within the scope of this website is:
Green Shark GroupOur company data protection officer is available to answer your questions or concerns regarding data protection:
Thomas HeilmannWe process personal data of our users only to the extent necessary to provide a functional website as well as our content and services. The processing of personal data is always carried out in accordance with the General Data Protection Regulation (GDPR) and the applicable national data protection regulations.
Processing of your data takes place:
Each time our website is accessed, our system automatically collects data and information from the computer system of the accessing end device. The following data is collected:
The data is stored in the log files of our server. Storage of this data together with other personal data of the user does not take place.
The legal basis for the temporary storage of the data is Art. 6 (1) lit. f GDPR. The purpose of data storage is to ensure the functionality of the website as well as the detection and prevention of attacks. Evaluation for marketing purposes does not take place.
The data is deleted as soon as it is no longer required to achieve the purpose of its collection. In the case of data collection for the provision of the website, this is the case when the respective session is ended.
You can contact us via our contact form or by email. The data transmitted in this process (e.g. name, email address, phone number, message text) is stored for processing your request.
The legal basis is Art. 6 (1) lit. f GDPR. If the contact serves contract initiation, the additional legal basis is Art. 6 (1) lit. b GDPR.
Your data will only be forwarded to internally authorized persons and will not be disclosed to third parties unless there is a legal obligation or you have given explicit consent.
The data will be deleted as soon as it is no longer required to achieve the purpose of its collection, usually after the communication has ended, but no later than 6 months, unless statutory retention periods prevent this.
Our website does not use cookies for tracking or marketing purposes. Only technically necessary cookies (session cookies) are used to enable the use of certain functions (e.g. contact form).
These cookies are automatically deleted after the end of the browser session. Storage beyond the session does not take place.
The use of technically necessary cookies is based on Art. 6 (1) lit. f GDPR. They serve user-friendliness and the secure functionality of the website.
You can deactivate or delete the storage of cookies in your browser settings at any time. Deactivation may restrict the functionality of the website.
We use Google Maps (provider: Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland) on our website to display maps and create directions.
When Google Maps is called up, data is transmitted to Google's servers (e.g. IP address, location). We point out that Google may process this data in the USA. Google has an adequate level of data protection according to the EU-US Data Privacy Framework (DPF).
The use of Google Maps is in our legitimate interest in a user-friendly presentation of our locations (Art. 6 (1) lit. f GDPR).
Further information on the handling of user data can be found in the Google Privacy Policy.
You have the following rights regarding your personal data:
If you wish to exercise any of these rights, please contact the contact details mentioned above.
You also have the right to lodge a complaint with a data protection supervisory authority regarding our processing of personal data. The competent authority is the data protection authority of your habitual residence, your workplace or our company headquarters.
We take comprehensive technical and organizational measures to protect your personal data against accidental or intentional manipulation, loss, destruction or access by unauthorized third parties. Our security procedures are regularly reviewed and adapted to the state of the art.
Data transmission takes place via an encrypted HTTPS connection (SSL/TLS).
We reserve the right to adapt this privacy policy in order to adjust it to changed legal or technical framework conditions. The respective current version can be accessed on this page at any time.
Should individual provisions of this privacy policy be or become wholly or partially invalid, the validity of the remaining provisions shall remain unaffected. A valid provision that comes closest to the economic purpose of the invalid provision shall take its place.
Status: May 2025 | Valid for the use of www.XTRA-E.com
These General Terms and Conditions apply to the use of the website www.xtra-e.com, as well as www.xtra-e.de (hereinafter "Website") as well as to all offers, services and communication between users and the operator of the website.
The operator of the website is:
Green Shark GroupDeviating conditions of the user will not be recognized unless they have been expressly agreed to.
The use of the website is generally freely accessible to all users. The operator provides the website and its content (texts, images, graphics, functions) to the extent technically and economically possible.
Each user undertakes to use the website exclusively for permitted purposes and in particular:
In case of violations, the operator reserves the right to block access and take legal action.
The website serves to provide information about services in the field of renewable energies, in particular the leasing of land for solar systems.
All offers contained on the website are subject to change and non-binding. The operator points out that the information (e.g. on compensation, terms, locations) is non-binding and does not create any legal claims.
A contract is only concluded upon written confirmation (e.g. by email or signed contract).
Users can submit inquiries via the contact form provided on the website or by email. By submitting an inquiry, they agree that their personal data will be stored and processed for processing (see also Privacy Policy).
The operator endeavors to answer inquiries promptly, but assumes no liability for delayed or omitted responses.
All content of this website (texts, images, logos, graphics, software, layout) is protected by copyright and is the property of XTRA-E GmbH or licensed third parties.
Any reproduction, editing, distribution or use outside the narrow limits of copyright law requires the written consent of the rights holder.
In particular, downloading, copying or automated storage of content for commercial purposes is prohibited.
The operator of the website does not assume any warranty for the correctness, completeness and timeliness of the information provided. Use is at your own risk.
Liability for damages that arise directly or indirectly from the use of the website is – insofar as legally permissible – excluded.
This does not apply in particular to:
The website contains links to external websites of third parties. The operator has no influence on their content and assumes no liability for them. The respective provider or operator is always responsible for the content of the linked pages.
Upon becoming aware of legal violations, such links will be removed immediately.
The operator reserves the right to change or supplement these GTC at any time, in particular in the event of legal innovations or technical developments.
The respective current version can be accessed on this page at any time. Continued use of the website after publication of the amended GTC is deemed to be acceptance of these.
Should individual provisions of these GTC be or become invalid or unenforceable, the validity of the remaining provisions shall remain unaffected. A valid provision that comes closest to the economic purpose shall take the place of the invalid provision.
The law of the Federal Republic of Germany shall apply, excluding the UN Convention on Contracts for the International Sale of Goods (CISG).
The place of jurisdiction for all disputes arising from or in connection with the use of the website is – insofar as legally permissible – Berlin.
Consumers have the option of settling disputes via the EU online dispute resolution platform: https://ec.europa.eu/consumers/odr.
Information according to § 5 TMG
Responsible for content according to § 55 para. 2 RStV:
Green Shark Group
In den Rosengärten 27
64711 Erbach, Germany
The XTRA-E® brand is a registered trademark at the German Patent and Trademark Office (DPMA).
Intelligent battery storage uses arbitrage – high returns through digital energy market control.
With the XTRA-E® Storage Cashback model, the Green Shark Group offers a high-yield participation in future-proof battery storage systems. Through automated trading strategies on the energy market (arbitrage), high utilization and stable cash flow generation are achieved.
Charge your e-mobility – and benefit at the same time. Your charging station becomes a return object.
The XTRA-E® Mobility Cashback model combines infrastructure for e-mobility with economic return. Charging parks are operated at strategic locations and made profitable through usage fees, cooperations and energy market integration.
Become an investor now
Professional PV planning for private, commercial & installation companies – complete, fast and cost-effective
Whether single-family home, commercial enterprise or large-scale project: Behind every profitable photovoltaic system lies a well-thought-out plan. With XTRA-E® you receive your individual plan as a complete package – without detours, without waiting times, without compromises. Our electrical engineers deliver turnkey PV plans tailored exactly to your requirements.
Finally save – without excuses
You believe photovoltaics is too complicated, too expensive or "simply not your thing"?
Maybe that's just the story you tell yourself – to avoid having to decide.
The truth:
You don't need specialist knowledge. No time. No perfect roof.
Just one moment when you stop getting in your own way.
XTRA-E® checks free of charge and without obligation whether an economical solution can be found for your property –
without salespeople, without pressure, without hidden agenda.
Complemented by professional energy consulting for holistic assessment of consumption, storage needs and system economics.
Costs only arise upon implementation – clear, transparent and success-based.
Until then? Zero euros. Zero risk. Just facts.
Building . Values . Together
for craft businesses, service providers and agencies
The perfect cross-selling product for craft businesses such as painters, plumbing companies, carpenters, landscapers etc. & service providers such as insurance brokers, emergency locksmiths, caretaker services etc.
You are the perfect partner – without competition
You are in direct contact with customers who want to modernize, build or save. When the topic "photovoltaics" comes up, often just a brief hint is needed – and you create real added value.
With the XTRA-E® partner program, you become a referrer – and receive an individual bonus for each successful recommendation. No effort. No liability. No sales.
How it works
Your tool – ready to use immediately
Add this line to your email signature:
Or simply use your landing page as a text link in your email signature
e.g.: ...You're the type of person who uses something like this – or?
Transparent framework conditions
average cashback
Full Service Agreement
realistic implementation lead time
guaranteed charging capacity
Attractive investments in the energy infrastructure of the future.
Charge electricity, increase value – your charging station pays off.
Arbitrage with electricity: Intelligent storage, maximum return.
Forward-looking power plants. Sustainable energy. Above-average return.
Implementing your energy strategy makes your company future-proof.
Lease your land and become part of the energy transition.
Contact us for a non-binding consultation on investments or your photovoltaic project.
Photovoltaic check for free Schedule appointment