Solar Knowledge Base & Guides

Guides built on public installation records: what homeowners actually pay, which installers lead in each market, and what to do when something breaks.

Best Solar Panel Brands, Ranked by 900,000 Real Installations
Market Data

Best Solar Panel Brands, Ranked by 900,000 Real Installations

Qcells panels went on 26% of U.S. home solar systems installed in 2021–2023. Market share, median price and leasing for every major panel brand, from public records.

Are Solar Batteries Worth It in 2026? What the Numbers Say
Battery Storage

Are Solar Batteries Worth It in 2026? What the Numbers Say

Who is actually installing home batteries, what they paid (median $21,400 in public records), and when a battery pays for itself without the federal tax credit.

Best Solar Companies in Texas: What the Records Show (2026)
Installers

Best Solar Companies in Texas: What the Records Show (2026)

The installers with the most home solar systems in San Antonio and the most permits in Austin, the Texas installers that closed, and how to vet a solar company in Houston or Dallas.

The Biggest Home Solar Companies in the U.S., by Installations
Installers

The Biggest Home Solar Companies in the U.S., by Installations

The 20 companies that installed the most home solar systems in 2021–2023, from nearly a million public installation records: market share, leasing, prices, and which ones have since closed.

Freedom Forever Bankruptcy: What Homeowners Should Do Now
Industry News

Freedom Forever Bankruptcy: What Homeowners Should Do Now

Freedom Forever filed for Chapter 11 in April 2026 and is now being liquidated. Key dates, the October 16, 2026 claim deadline, and what happens to warranties, loans, leases and unfinished installations.

How Many Homes Have Solar Panels? Every State in 2026
Market Data

How Many Homes Have Solar Panels? Every State in 2026

About 5.6 million U.S. homes have rooftop solar enrolled in net metering, 8.5% more than a year earlier. State-by-state numbers from utility reports to the EIA, with growth, system size and batteries.

Solar Panel Cost in 2026: What Homeowners Actually Paid
Cost & ROI

Solar Panel Cost in 2026: What Homeowners Actually Paid

The median home solar system cost $4.22 per watt, about $30,000 for 7.2 kW, before incentives. Real prices by state, system size and battery, and payback without the federal credit.

Solar Companies That Went Out of Business: The 2026 List
Industry News

Solar Companies That Went Out of Business: The 2026 List

The home solar installers that closed or went bankrupt, how many systems each left behind according to public records, and what to do if yours is on the list.

Solar Lease vs. Buy in 2026: What the Records Show
Cost & ROI

Solar Lease vs. Buy in 2026: What the Records Show

Fewer homeowners lease solar than a decade ago, but leases and PPAs are the only way left to benefit from a federal credit. Lease shares by state and year, which installers lease, and how to compare.

SunPower Bankruptcy: What SunPower Owners Can Do in 2026
Industry News

SunPower Bankruptcy: What SunPower Owners Can Do in 2026

SunPower filed for Chapter 11 in August 2024. Who honors panel and microinverter warranties now, what happened to the mySunPower app, and who services SunPower leases.

Solar Tax Credits in 2026: What Ended and What's Left
Incentives

Solar Tax Credits in 2026: What Ended and What's Left

The 30% federal solar tax credit for homeowners ended on December 31, 2025. Here is what replaced it, how carryforward works if you installed in 2025, and which incentives still exist in 2026.

Solar Panel Maintenance: A Homeowner's Checklist
Maintenance

Solar Panel Maintenance: A Homeowner's Checklist

What solar panel maintenance actually involves: cleaning, a yearly visual check, watching the monitoring app, and what to do if the company that installed your system has closed.

Solar Panels Not Working? A Step-by-Step Troubleshooting Guide
Repair

Solar Panels Not Working? A Step-by-Step Troubleshooting Guide

Diagnose common solar panel problems with our troubleshooting guide. Learn how to handle inverter error lights, zero production issues, tripped breakers, and more.