# SunPower Estimate Powered by US Power

> Get a free, no\-obligation SunPower solar estimate\. Compare panels, battery backup, and financing with an authorized SunPower dealer\.

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## Pages
- [Contact](https://sunpowerestimate.com/contact-sunpower/)
- [HomePage](https://sunpowerestimate.com/)
- [Technology](https://sunpowerestimate.com/technology/)
- [Home Solar Systems](https://sunpowerestimate.com/home-solar-systems/)
- [Battery Backup](https://sunpowerestimate.com/battery-backup/)

## Posts
- [SunPower Panel Wattage Explained: 320W to 440W Compared](https://sunpowerestimate.com/sunpower-panel-wattage-explained/): SunPower panel wattage ranges from 320W on legacy E\-Series and X\-Series panels up to 440W on the current Maxeon 6 line\. Here's what drives that spread and how it changes your system size and cost\.
- [How to Add More Panels to an Existing SunPower System](https://sunpowerestimate.com/adding-panels-to-existing-sunpower-system/): Adding panels to a SunPower system is usually possible, but roof space, inverter headroom, panel\-generation compatibility, and NEM interconnection rules all affect whether it makes sense and what it will cost\.
- [SunPower vs Tesla Solar: Which Panels Perform Better](https://sunpowerestimate.com/sunpower-vs-tesla-solar/): Comparing SunPower and Tesla solar panels? Here's how Maxeon cell technology stacks up against Tesla's standard panels on efficiency, long\-term degradation, and warranty coverage, plus which one fits your roof\.
- [Understanding Your SunPower Lease Buyout Options](https://sunpowerestimate.com/sunpower-lease-buyout-options/): Paying a monthly bill on a leased SunPower system and wondering if buying it out makes sense? Here's how the payoff is calculated, what the 2024 bankruptcy did and didn't change, the step by step buyout process, and how to pay for it\.
- [SunPower Panel Cleaning: DIY vs Professional Service](https://sunpowerestimate.com/sunpower-panel-cleaning-diy-vs-professional/): Dirt and dust cost a SunPower system a few percent of output a year, and owners have two ways to fix it: clean it themselves or pay for a professional service\. This guide compares the cost, the risks, and the results of each so you can pick the right approach for your roof\.

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