Privacy Policy

Last Updated: September 30, 2026

This Privacy Policy describes how Marstek Energy (“we,” “us,” “our,” or the “Website”) collects, uses, and discloses your personal information when you visit or use our services, purchase products from Marstekenergy.com (the “Website”), or otherwise communicate with us through the Website (collectively, the “Services”).

For the purposes of this Privacy Policy, “you” and “your” refer to you as a user of the Services, whether you are a customer, website visitor, or another individual whose information we collect in accordance with this Privacy Policy.

Please read this Privacy Policy carefully.

Changes to This Privacy Policy

We may revise this Privacy Policy from time to time due to business adjustments or updates to applicable legal and regulatory requirements.

When we update this Privacy Policy, we will publish the revised version on the Website and update the “Last Updated” date. For material compliance-related changes, such as changes to our data processing practices or international data transfer mechanisms, we may notify registered users through a website announcement or email.

Unless otherwise required by applicable law, the revised Privacy Policy will become effective once it is published on the Website.

How We Collect and Use Your Personal Information

To provide the Services, we may collect personal information about you from various sources while you interact with the Website, as described below. The information we collect and how we use it may vary depending on how you interact with us.

In addition to the specific purposes described below, we may use the information we collect to communicate with you, provide or improve the Services, comply with applicable legal obligations, enforce applicable terms of service, and protect or defend the Services, our rights, and the rights of our users or other individuals.

What Personal Information We Collect

The types of personal information we collect depend on how you interact with our Website and use our Services. When we use the term “personal information,” we mean information that identifies, relates to, describes, or could reasonably be associated with you.

The following sections describe the categories and specific types of personal information we may collect.

Information We Collect Directly from You

Information that you submit directly through our Services may include:

• Contact information, including your name, address, telephone number, and email address.
• Order information, including your name, billing address, shipping address, payment confirmation, email address, and telephone number.
• Account information, including your username, password, security questions, and other information used to secure your account.
• Customer support information, including information you choose to provide when communicating with us through the Services.

Certain features of the Services may require you to provide certain information directly to us. You may choose not to provide such information; however, doing so may prevent you from using or accessing certain features.

For example, to process your order and perform our contractual obligations, you must provide the necessary contact and payment information. If you do not provide this information, we may be unable to process your order or complete the transaction.

Information We Collect About Your Use of the Services

We may also automatically collect certain information about your interactions with the Services (“Usage Data”). For this purpose, we may use cookies, pixels, and similar technologies (“Cookies”).

Usage Data may include information about how you access and use our Website and account, including device information, browser information, network connection information, IP address, and other information relating to your interactions with the Services.

Information We Obtain from Third Parties

We may also obtain information about you from third parties, including vendors and service providers that may collect information on our behalf, such as:

• Companies that support our Website and Services, including Shopify, Klaviyo, Google, and Meta.
• Our payment processors, which may collect payment information such as bank account details, credit or debit card information, and billing addresses in order to process your payments, fulfill your orders, and provide the products or services you request as part of our contractual relationship.
• Third parties and service providers that use online tracking technologies, such as pixels, web beacons, software development kits, third-party libraries, and Cookies, when you visit our Website, open or click emails we send, or interact with our Services or advertisements.

Any information we obtain from third parties will be processed in accordance with this Privacy Policy. Please also see the section “Third-Party Websites and Links” below.

How We Use Your Personal Information

Providing Products and Services

We use your personal information to provide the Services and perform our contractual obligations to you, including processing payments, fulfilling orders, sending account-related notifications, processing purchases, returns, exchanges, or other transactions, creating, maintaining, and managing your account, arranging shipments, facilitating returns and exchanges, and providing other account-related features and functionalities.

We may also improve your shopping experience by enabling Shopify, Klaviyo, Google, and Meta to connect your account with other services you choose to use. In such cases, Shopify, Klaviyo, Google, and Meta will process your information in accordance with their respective privacy policies and applicable consumer privacy policies.

If you are a resident of the European Economic Area (“EEA”), such processing activities may be based on our legitimate interests in operating our business and improving the service experience, or on other applicable legal bases under Article 6(1) of the GDPR, as applicable.

Marketing and Advertising

We may use your personal information for marketing and promotional purposes, including sending marketing, advertising, and promotional communications by email, SMS, or mail, and displaying advertisements for products or services to you.

This may include using your personal information to better tailor our Services and advertisements on our Website and other websites.

If you are a resident of the EEA, such processing may be based on our legitimate interests in promoting and selling our products under Article 6(1)(f) of the GDPR, where permitted by applicable law. Where consent is required, we will rely on your consent.

Security and Fraud Prevention

We use your personal information to detect, investigate, or take action against potential fraudulent, illegal, or malicious activities.

If you choose to use the Services and register an account, you are responsible for maintaining the security of your account information. We strongly recommend that you do not share your username, password, or other access credentials with others.

If you believe your account has been compromised, please contact us immediately.

If you are a resident of the EEA, such processing may be based on our legitimate interests in protecting the security of the Website under Article 6(1)(f) of the GDPR.

Communications and Service Improvement

We use your personal information to provide customer support and improve the quality of our Services.

This processing may be based on our legitimate interests in responding to you in a timely manner and providing effective customer service, where permitted by applicable law, including Article 6(1)(f) of the GDPR for EEA residents.

Data Retention

We retain personal information only for as long as necessary to fulfill the purposes for which it was collected.

Unless we are required to retain information to comply with a legal obligation or to establish, exercise, or defend legal claims, personal information will be deleted or anonymized when it is no longer required.

Once applicable statutory retention periods have expired, the relevant information will be deleted.

Cookies

Like many websites, we use Cookies on our Website, including both necessary and non-essential Cookies.

Necessary Cookies

These Cookies are required to browse our Website and use its features. Without these Cookies, we may not be able to provide services such as shopping cart functionality and electronic checkout.

Non-Essential Cookies

Performance Cookies

Performance Cookies collect information about how visitors use the Website, such as which pages visitors access most frequently and whether they encounter errors.

These Cookies do not directly identify individual visitors. The information collected is generally aggregated or anonymized and is used to analyze Website usage and improve Website performance.

Functional Cookies

Functional Cookies allow the Website to remember choices you make, such as language, region, font size, and customized interface settings, in order to provide a more personalized experience.

They may also be used to provide functions you actively request, such as video playback or commenting features.

Some information may be anonymized. These Cookies are not intended to track your browsing activity across unrelated websites.

Targeting and Advertising Cookies

Targeting and advertising Cookies are used to provide advertising content that may be more relevant to your interests, limit the number of times advertisements are displayed, and measure the effectiveness and conversion of advertising campaigns.

These Cookies are generally placed by advertising partners or advertising networks with our permission. They may record information about your activity on our Website, and such information may be shared with advertising service providers.

We may also allow third parties and service providers to use Cookies on our Website to better tailor our Services, products, services, and advertisements on our Website and other websites.

For information about Cookies used by Shopify, please see Shopify’s Cookie Policy.

For information about Cookies used by Klaviyo, please see Klaviyo’s Cookie Policy.

For information about Cookies used by Google, please see Google’s Cookie Policy.

For information about Cookies used by Meta, please see Meta’s Privacy Policy.

Most browsers accept Cookies by default, but you can use your browser settings to remove or reject Cookies.

Please note that removing or blocking Cookies may negatively affect your user experience and may cause certain Services, features, or functionalities to malfunction or become unavailable. Blocking Cookies may also not completely prevent us from sharing information with third parties, such as advertising partners.

For more information, please see our Cookie Policy.

How We Disclose Personal Information

In certain circumstances, we may disclose your personal information to third parties for the performance of contracts, legitimate business purposes, and other purposes permitted under this Privacy Policy.

These circumstances may include:

• Working with vendors or other third parties that provide services on our behalf, such as IT management, payment processing, data analytics, customer support, cloud storage, fulfillment, and shipping.
• Working with business and marketing partners to provide Services and advertising to you. Our business and marketing partners will use your information in accordance with their own privacy policies.
• Disclosing information when you direct us, request us to do so, or otherwise consent to such disclosure, such as when you provide consent for us to ship products to you, use social media widgets, or use login integrations.
• Sharing information with our affiliates or other members of our corporate group where necessary for the legitimate interests of operating a successful business.
• In connection with business transactions such as mergers, acquisitions, or bankruptcy, complying with applicable legal obligations, including responding to subpoenas, search warrants, and similar requests, enforcing applicable terms of service, and protecting or defending the Services, our rights, and the rights of our users or others.

We do not use or disclose sensitive personal information for purposes of inferring characteristics about you without your consent.

Third-Party Websites and Links

The Website may provide links to websites or other online platforms operated by third parties.

If you click a link to a website that is not affiliated with or controlled by us, you should review its privacy and security policies and other terms and conditions.

We do not guarantee and are not responsible for the privacy or security of such websites, including the accuracy, completeness, or reliability of information provided on those websites.

Information you provide in public or semi-public spaces, including information you share on third-party social networking platforms, may also be viewed by other users of the Services and/or users of those third-party platforms and may be subject to the terms and policies of those platforms.

Our inclusion of such links does not, by itself, constitute an endorsement of those platforms or their owners or operators, unless expressly stated within the Services.

Automated Decision-Making and Profiling

In certain circumstances, we may use automated processing, including profiling, to evaluate certain personal characteristics or preferences relating to you.

Advertising Targeting

We may use advertising tools provided by Google and Meta to display advertisements for products or services that may be more relevant to you based on your browsing behavior, device information, and interactions with our Website.

This processing may involve automated systems analyzing your browsing history, click behavior, and device characteristics to determine which product categories may be of interest to you and which advertising content may be displayed.

The potential effect of this processing is that you may see advertising content that differs from what you would see without such automated processing.

Such processing does not produce legal effects concerning you and does not similarly significantly affect you.

If you do not want your personal data to be used for these purposes, you may object to such processing at any time, as described in the “Right to Object” section, or withdraw applicable consent through our Cookie consent management tool.

Where applicable, you may also request human intervention, express your point of view, and contest a decision resulting from such automated processing.

Children's Data

The Services are not intended for children, and we do not knowingly collect personal information from children.

If you are a parent or legal guardian of a child who has provided personal information to us, you may contact us using the contact details below and request that the information be deleted.

In Germany, users aged 16 or older may provide valid consent to the processing of their personal data in connection with information society services. For users under 16, we will not rely on their consent without the required parental authorization.

Information Security and Retention

Please note that no security measures are perfect or completely impenetrable, and we cannot guarantee “perfect security.”

In addition, any information you send to us may not be secure while in transit. We recommend that you do not use unsecured channels to communicate sensitive or confidential information to us.

The length of time we retain your personal information depends on various factors, including whether we need the information to maintain your account, provide Services, comply with legal obligations, resolve disputes, or enforce other applicable contracts and policies.

Your Rights

Depending on where you are located, you may have some or all of the following rights concerning your personal information.

These rights are not absolute and may apply only in certain circumstances. In some cases, we may lawfully refuse your request.

Right of Access / Right to Information

You may have the right to request access to the personal information we hold about you, including information about how we use and share your information.

Right to Erasure

You may have the right to request that we delete personal information we hold about you.

Right to Rectification

You may have the right to request that we correct inaccurate personal information we hold about you.

Right to Data Portability

In certain circumstances and subject to certain exceptions, you may have the right to receive a copy of your personal information and request that we transfer it to a third party.

Right to Restriction of Processing

You may have the right to request that we stop or restrict the processing of your personal information.

Right to Withdraw Consent

Where we rely on your consent to process your personal information, you may have the right to withdraw that consent at any time.

Right to Appeal

If we refuse to process your request, you may have the right to appeal our decision. You may do so by responding directly to our refusal.

Managing Communication Preferences

We may send you promotional emails. You may opt out at any time by using the unsubscribe option included in our emails.

If you opt out, we may still send you non-promotional communications, such as emails relating to your account or orders you have placed.

You may exercise these rights through the methods specified on our Website or by contacting us using the contact information below.

We will not discriminate against you for exercising your rights.

Before responding substantively to a request, we may need to collect information from you to verify your identity, such as your email address or account information.

Where permitted by applicable law, you may designate an authorized agent to submit a request on your behalf. Before accepting such a request, we may require the agent to provide proof that you have authorized them to act on your behalf, and we may require you to verify your identity directly.

We will respond to your request within the time required by applicable law.

Right to Object

You have the right to object to our processing of your personal data.

Where your personal data is processed on the basis of Article 6(1)(e) or Article 6(1)(f) of the GDPR, you have the right, on grounds relating to your particular situation, to object at any time to such processing, including profiling based on those provisions.

Following an objection, we will no longer process your personal data unless we can demonstrate compelling legitimate grounds for the processing that override your interests, rights, and freedoms, or the processing is necessary for the establishment, exercise, or defense of legal claims.

Where your personal data is processed for direct marketing purposes, you have the right to object at any time to the processing of your personal data for such marketing, including profiling related to direct marketing.

Once you object, we will no longer process your personal data for direct marketing purposes. You do not need to provide reasons for exercising this right.

You may exercise your right to object by sending an email to support@marstekenergy.com.

Complaints

If you have a complaint about how we process your personal information, please contact us using the contact information below.

If you are not satisfied with our response to your complaint, depending on where you are located, you may have the right to appeal our decision or lodge a complaint with your local data protection authority.

For residents of the EEA, a list of the relevant data protection supervisory authorities is available from the European Data Protection Board.

International Data Transfers

Please note that we may transfer, store, and process your personal information outside the country in which you reside, including in the United States, the European Union, or other destinations.

Your personal information may also be processed by employees, third-party service providers, and business partners located in those countries.

When we transfer personal information outside the EEA or to other countries, we will rely on recognized transfer mechanisms, such as the European Commission’s Standard Contractual Clauses or equivalent contractual mechanisms issued or recognized by the relevant UK authorities, unless the recipient country has been recognized as providing an adequate level of data protection.

Contact Us

If you have any questions about our Privacy Policy or wish to exercise any applicable rights, please contact us by email at support@marstekenergy.com.

Marstek Energy GmbH

Registered Address: Wiesenstraße 21, 40549 Düsseldorf, Germany Email: support@marstekenergy.com

Unless otherwise stated, and to the extent required by applicable data protection laws, we are the data controller of your personal information.