Privacy policy

Last updated September 24, 2026.

Calculator inputs and contact messages

Solar Payback Calculator is operated by Nathan Management, Andrew James Flores. The calculator on the page performs its calculations in your browser. Its input controls do not submit your ZIP, system size, cash price, electricity prices or household assumptions to a contact form or an account. There is no need to enter your name, street address, utility account number or tax information.

A page visit is still a network request. A ZIP or other information placed in a URL, including a legacy ZIP-page address or a request made directly to our calculation API, can be received by the hosting service even though the on-page calculator does not send it. Do not put sensitive information in URLs. If you email us, we receive the email address, message and any attachments you choose to send; please redact account numbers and personal documents.

Hosting, request information and retention

Vercel hosts this website and processes network and request information such as IP address, requested URL, browser information and referrer to deliver and protect the service. This is separate from whether a calculator input is sent. Read Vercel's privacy notice.

We have not configured an external log drain (checked September 24, 2026). Vercel's published runtime-log limits set how long request logs can be viewed in our hosting account: one hour or one day, depending on the account plan. That is not a promise that every security, infrastructure or provider record is deleted after one hour. Provider retention varies by purpose and service. Contact us about information you have sent directly to us.

The optional Vercel Web Analytics integration is disabled in our current production build configuration. If enabled in a later release, it collects page-view information under Vercel's analytics privacy documentation. This does not change the hosting or advertising processing described here.

Google advertising technology

The site includes Google AdSense code, which loads on every page. When a page loads, that code can send Google your IP address, page URL and device or browser information, make ad-related requests, and set or read cookies and similar identifiers (for example, a test cookie on the doubleclick.net domain). This can happen even when no ad is displayed, and on a visit where no privacy message is shown. Ads may not appear on every visit.

Third-party vendors, including Google, use cookies to serve ads based on a visitor's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the Internet. Google and participating vendors may also use cookies, web beacons and similar identifiers to measure ads and prevent fraud. Google publishes the list of ad technology partners that publishers can allow to serve and measure ads for visitors in the European Economic Area, the UK and Switzerland, with a link to each partner's data-use page. That list is limited to those regions. Read how Google uses information from partner sites and Google's privacy policy.

Your choices and consent

You can manage Google personalized advertising through My Ad Center, review industry choices at YourAdChoices, opt out of some third-party vendors' use of cookies for personalized advertising at www.aboutads.info, and use your browser's cookie and tracking controls. These choices may apply only to that browser or account; opting out of personalization does not necessarily stop all ads or all service-related processing.

Where a privacy message is displayed, use its available choices to manage consent. We do not promise that every visitor will see a particular prompt: display depends on geography, prior choices and the advertising service. Absence of a prompt does not itself mean that no third-party request occurred. Please report an unexpected consent or advertising experience without sending cookie values or other sensitive identifiers.

Privacy requests

Depending on where you live and which privacy laws apply, you may have rights to request access, correction or deletion, or to opt out of certain uses or sharing of personal information. We do not sell contact messages. Advertising data sharing is described separately above and should not be mistaken for a blanket no-sharing promise. For requests relating to information you provided to us, email hello@nathanmanagement.pro. California law, for example, describes a right to opt out of the sale or sharing of personal information (Civil Code section 1798.120). You can email a request of that kind to the same address with "Opt-out request" in the subject line; it is answered, though no response time is guaranteed. The email does not by itself change anything in your browser: this site has no per-visitor advertising setting that an email can switch, and the Google advertising cookies are stored in your browser. To apply your choice directly, use the My Ad Center, YourAdChoices and browser controls above. Google and Vercel also provide privacy-request channels in their linked notices.

Children

This utility is not directed at children under 13. Please do not send children's personal information. Contact us if you believe a child has sent information to us so we can investigate and address it.