IMPORTANT — PLEASE READ CAREFULLY. By creating an account or using SolarPro Design you agree to be legally bound by these Terms. If you do not agree, do not use the platform.

Table of Contents

1. Parties and Agreement
2. Description of Service
3. Account Registration and Security
4. Subscription Plans and Payment
5. Acceptable Use Policy
6. Intellectual Property
7. User Content and Data
8. Beta Programme
9. Disclaimer of Warranties
10. Limitation of Liability
11. Indemnification
12. Dispute Resolution and Arbitration
13. Governing Law
14. Termination
15. Changes to These Terms
16. Contact

1. Parties and Agreement

These Terms of Service ("Terms") constitute a legally binding agreement between you ("User", "you") and SolarPro Design / AI App Invent ("Company", "we", "us"), the operator of the SolarPro Design platform accessible at https://solarpro.aiappinvent.com ("Platform").

By registering for an account, accessing, or using the Platform in any way, you confirm that:

• You are at least 18 years old or have legal capacity to enter contracts in your jurisdiction.
• You have read, understood, and agree to these Terms and our Privacy Policy.
• Where you act on behalf of an organisation, you have authority to bind that organisation to these Terms.

2. Description of Service

SolarPro Design provides a cloud-based software-as-a-service (SaaS) platform for solar photovoltaic (PV) system design, load estimation, financial modelling, bill of quantities generation, and related engineering tools ("Service").

Engineering Disclaimer: Outputs generated by the Platform (including sizing calculations, cost estimates, and system designs) are provided for informational and preliminary planning purposes only. They do not constitute professional engineering advice, certified designs, or construction documents. You must engage a licensed engineer or qualified professional to review, certify, and take responsibility for any design before procurement, installation, or submission to any authority. The Company accepts no liability for decisions made based solely on Platform outputs.

3. Account Registration and Security

3.1 Accurate Information. You agree to provide accurate, current, and complete information during registration and to keep it updated.

3.2 Credentials. You are solely responsible for maintaining the confidentiality of your username and password and for all activities under your account. Notify us immediately at support@aiappinvent.com of any unauthorised use.

3.3 One Account Per Person. Each person may hold one active free account. Creating multiple free accounts to circumvent plan limits is prohibited and may result in immediate termination of all associated accounts.

3.4 No Account Sharing. Your account is personal and non-transferable. Sharing credentials with other individuals or organisations is not permitted under any plan.

4. Subscription Plans and Payment

4.1 Plans. The Platform is offered under the following plans: Free Trial, Professional, Business, and Enterprise. Features, project limits, and pricing are described at solarpro.aiappinvent.com/upgrade and may change with reasonable notice.

4.2 Free Trial. The free plan is limited to one (1) project for fourteen (14) calendar days from account creation. At the end of the trial period, access to project data is retained but new project creation requires an upgrade.

4.3 Payment. Paid subscriptions are billed in advance on a monthly or annual basis via supported payment processors (Paystack, Stripe). All fees are non-refundable except as required by applicable law or as expressly stated in a refund policy communicated to you in writing.

4.4 Non-Payment. Failure to pay on the due date may result in downgrade to the free tier and restriction of access to premium features. We will provide at least 7 days' notice before downgrading a paid account.

4.5 Taxes. You are responsible for all applicable taxes, duties, or levies arising from your use of the Platform in your jurisdiction.

5. Acceptable Use Policy

You agree to use the Platform only for lawful purposes and in accordance with these Terms. You must not:

• Use the Platform for any purpose that is unlawful, fraudulent, harmful, or that violates any applicable law or regulation.
• Submit false, misleading, or inaccurate project data with the intent to defraud any third party, obtain financing, or misrepresent system performance.
• Attempt to gain unauthorised access to any part of the Platform, its servers, databases, or connected systems.
• Reverse-engineer, decompile, disassemble, or attempt to extract the source code or algorithms of the Platform.
• Scrape, crawl, or use automated means to extract data from the Platform without our prior written consent.
• Transmit any malware, viruses, or other malicious code through the Platform.
• Use the Platform to generate, distribute, or facilitate spam or unsolicited communications.
• Resell, sublicense, or commercially exploit the Platform or its outputs without written permission.
• Interfere with or disrupt the integrity, performance, or availability of the Platform or its infrastructure.
• Impersonate any person or entity, or misrepresent your affiliation with any person or entity.
• Use Platform outputs in any context where failure of a solar system could cause personal injury, property damage, or death, without independent professional review and certification.

Violation of this Acceptable Use Policy may result in immediate suspension or termination of your account without notice or refund, and may be reported to relevant authorities where required by law.

6. Intellectual Property

6.1 Platform. The Platform, including all software, algorithms, calculation engines, designs, graphics, and documentation, is owned by or licensed to the Company and is protected by copyright, trade secret, and other intellectual property laws. Nothing in these Terms grants you any ownership right in the Platform.

6.2 Your Data. You retain ownership of all project data, load schedules, and inputs you submit to the Platform ("User Data"). You grant the Company a limited, non-exclusive licence to process your User Data solely to provide and improve the Service.

6.3 Feedback. Any feedback, suggestions, or ideas you provide to us may be used by the Company freely and without obligation or compensation to you.

7. User Content and Data

7.1 Responsibility. You are solely responsible for the accuracy, legality, and completeness of all data you input into the Platform. The Company does not verify the accuracy of user-submitted data.

7.2 Storage. User Data is stored on third-party cloud infrastructure (Render.com). While we implement reasonable security measures, we cannot guarantee the security of data transmitted over the internet.

7.3 Backup. You are responsible for maintaining your own backups of critical project data. The Company is not liable for data loss due to technical failures, cyber incidents, or service interruptions.

8. Beta Programme

During the Beta Programme, features may be incomplete, unstable, or subject to significant change. Beta access is provided "as-is" with no warranty of any kind.

Beta participants acknowledge that:

• The Platform may experience outages, data loss, or unexpected behaviour during the beta period.
• Beta features may be modified, removed, or made available only on paid plans after the beta period ends.
• Feedback submitted during the beta may be used to improve the Platform without compensation.

The Company reserves the right to terminate beta access at any time without notice.

9. Disclaimer of Warranties

The Platform's engineering calculations are based on general industry data and standard methodologies. Results may differ from actual installed system performance due to site-specific conditions, equipment variations, installation quality, weather, and other factors beyond our control.

10. Limitation of Liability

10.1 Aggregate Cap. In no event shall the Company's total aggregate liability to you for all claims arising out of or relating to these Terms or the Platform exceed the greater of: (a) the total fees paid by you to the Company in the twelve (12) months preceding the event giving rise to the claim, or (b) USD $100.

10.2 Engineering Reliance. The Company expressly disclaims all liability for any loss, injury, damage, or legal liability arising from reliance on Platform-generated designs, calculations, or reports without independent professional review and certification by a licensed engineer.

10.3 Third-Party Services. The Company is not responsible for the acts, omissions, or failures of any third-party service providers integrated with the Platform (including payment processors, AI providers, or cloud hosting providers).

11. Indemnification

You agree to defend, indemnify, and hold harmless the Company and its affiliates, officers, directors, employees, and agents from and against any claims, liabilities, damages, losses, costs, and expenses (including reasonable legal fees) arising out of or in connection with: (a) your use of the Platform; (b) your violation of these Terms; (c) your violation of any applicable law or regulation; (d) any project designed, installed, or commissioned in reliance on Platform outputs without appropriate professional oversight; or (e) any claim by a third party arising from your use of the Platform.

12. Dispute Resolution and Arbitration

12.1 Good Faith Resolution. Before initiating any formal proceeding, both parties agree to attempt to resolve any dispute through good-faith negotiation for a period of not less than 30 days from written notice of the dispute.

12.2 Binding Arbitration. If a dispute cannot be resolved through negotiation, it shall be finally settled by binding arbitration under the rules of a mutually agreed arbitration body. The arbitration shall be conducted in English. The arbitrator's decision shall be final and binding and may be enforced in any court of competent jurisdiction.

12.3 Class Action Waiver. YOU AND THE COMPANY EACH AGREE THAT ANY DISPUTE RESOLUTION PROCEEDINGS WILL BE CONDUCTED ONLY ON AN INDIVIDUAL BASIS AND NOT AS PART OF A CLASS, COLLECTIVE, OR REPRESENTATIVE ACTION. If for any reason a claim proceeds in court, you waive any right to a jury trial.

12.4 Small Claims. Notwithstanding the foregoing, either party may seek relief in a small claims court of competent jurisdiction for disputes within that court's jurisdictional limits.

13. Governing Law

These Terms shall be governed by and construed in accordance with generally accepted principles of international commercial law. Where a specific jurisdiction must be designated, the parties agree to the jurisdiction of the courts of England and Wales. Nothing in this clause prevents either party from seeking urgent injunctive or equitable relief in any competent court.

14. Termination

14.1 By You. You may close your account at any time by contacting support@aiappinvent.com. Fees paid for the current billing period are non-refundable.

14.2 By Us. We may suspend or terminate your account immediately and without notice if you breach these Terms, if your account is used for fraudulent activity, or if we cease to operate the Platform.

14.3 Effect of Termination. Upon termination, your right to use the Platform ceases immediately. We may delete your account data after 90 days following termination. Provisions that by their nature should survive termination (including Sections 6, 9, 10, 11, 12) shall survive.

15. Changes to These Terms

We reserve the right to modify these Terms at any time. Material changes will be communicated by email to your registered address or by a prominent notice on the Platform at least 14 days before taking effect. Your continued use of the Platform after the effective date of revised Terms constitutes your acceptance of the changes.

16. Contact

If you have questions about these Terms, please contact us:

• Email: support@aiappinvent.com
• Platform: https://solarpro.aiappinvent.com
• Support ticket: Available after login via the Support menu

These Terms were last revised on 30 May 2026 and supersede all previous versions.