Privacy & cookies
How this website handles data.
This policy explains data handling by EnergySystemSizer and by third-party services used to deliver, secure, and potentially monetize the website.
Calculator inputs stay in your browser
The solar, battery, and EV charging calculators perform their calculations in the browser. The site does not intentionally send the values you enter, imported load-profile contents, or generated calculator results to the site operator. Printing and file exports are initiated on your device.
Do not enter confidential, personal, export-controlled, or safety-critical project information into any web calculator unless you have independently assessed the risk.
Advertising and Google services
This website includes Google AdSense code. Google and its partners may use cookies, web beacons, IP addresses, or other identifiers to provide, measure, personalize, and protect advertising. Third parties may place and read cookies in your browser or use web beacons and IP addresses as a result of ad serving.
Learn how Google uses information from sites or apps that use its services. You can also review Google's advertising technologies and manage ad personalization in My Ad Center.
Where consent is legally required, advertising choices should be presented through the consent platform configured for this site. Your choices may affect whether personalized or non-personalized ads are shown.
Hosting, security, and technical logs
The hosting provider and content-delivery services may automatically process routine request information such as IP address, browser and device type, requested URL, referring page, timestamps, and security events. These records are commonly used to operate the site, prevent abuse, diagnose faults, and maintain security.
Some calculator pages load software, fonts, or icons from third-party content-delivery networks. Those providers may receive ordinary technical request data when your browser connects to them.
Local notebook and issue worksheet
The planning notebook stores saved scenarios in localStorage on this browser and site origin. Use each scenario’s Remove button or clear site data to delete them. CSV exports and issue reports are generated locally. The issue worksheet does not submit its text to a server. Saved inputs are not shared with an analytics service by this version.
Forms, accounts, and direct collection
The current static website does not provide user accounts, comments, purchases, or a server-side contact form. If those features are added, this policy should be updated before they are launched.
Children's privacy
The website is intended for general energy-planning and technical audiences and is not directed to children under 13. The operator does not knowingly request personal information from children.
Your choices
- Use browser controls to delete or block cookies. Blocking cookies may change how ads or some third-party resources work.
- Use Google's advertising controls linked above to manage personalization.
- Do not use the calculators for sensitive information; use non-identifying example values where practical.
Policy updates
This policy may change when the site adds services or when legal and advertising requirements change. The date at the top identifies the latest published version.