How does the California Rate Relief Program work?

We install solar panels on your roof at no cost out of pocket. Instead of paying your utility company a different amount every month, you pay a fixed monthly payment that is typically 30 to 50% less than what you are currently paying. The program covers 100% of the cost for solar panels, backup batteries, and installation.

Who qualifies for the Rate Relief Program?

California homeowners with SCE, PG&E, or SDG&E as their utility provider, monthly electric bills of $150 or more, and a credit score of 650 or above typically qualify. Renters are not eligible for this program.

Is there any cost to the homeowner?

There is $0 out of pocket cost. The program covers the full cost of solar panels, battery storage, and professional installation. Instead of paying your utility company, you simply pay a lower, fixed rate for the power generated by the system on your roof.

What happens if something breaks?

The program includes a comprehensive 25-year bumper-to-bumper warranty. If a panel breaks, it gets fixed. If an inverter fails, it gets replaced. All maintenance and repairs are covered at no cost to you for 25 years.

Which utility companies are supported?

The program currently supports homeowners with Southern California Edison (SCE), Pacific Gas & Electric (PG&E), San Diego Gas & Electric (SDG&E), Moreno Valley Utility (MVU), and Los Angeles Department of Water and Power (LADWP).

Trina Solar Panels Review 2026: California Homeowner Guide

Trina Solar is one of the world's largest tier-1 solar panel manufacturers — publicly traded on the Shanghai Stock Exchange (688599), founded in 1997, and producing panels in high volume for residential, commercial, and utility-scale markets worldwide. If your California installer proposes Trina panels, you're getting mainstream tier-1 hardware from a company with meaningful financial scale. Here's the plain review for California homeowners.

The Company

Trina Solar Co., Ltd. is headquartered in Changzhou, China, and operates globally across more than 100 countries. The company has consistently been ranked among the top-tier module manufacturers by independent industry trackers (Bloomberg Tier 1, PV-Magazine Top Performer). Trina is a large public company — financial transparency comes from SSE filings, and the company has been in continuous operation for nearly 30 years, which matters for long-duration warranty confidence.

Panel Series

Trina's current flagship residential line is the Vertex S series (compact residential modules) and Vertex / Vertex S+ (larger format for commercial). The Vertex S residential modules typically come in the 400-450W range with efficiencies in the 21-22% range depending on specific model year.

Trina is investing in TOPCon (Tunnel Oxide Passivated Contact) cell technology, which is the current industry-wide successor to PERC cells for residential use. TOPCon panels have better temperature-coefficient behavior and slightly better bifacial performance than older PERC generations.

Warranty

Trina Solar offers a standard 25-year product warranty (defects) + 25-year power/performance warranty on residential panels. Specific degradation curves and year-25 guaranteed output percentages vary by model year and series — a Vertex S module typically guarantees ~84-87% of original output at year 25, depending on the specific datasheet. Verify with your installer for the exact specification sheet on the specific Trina model being quoted.

Who Uses Trina in California

Trina panels are installed by a broad range of California installers — they're a common tier-1 choice across residential and commercial. Based on our installer research, Momentum Solar and Freedom Forever both include Trina among their panel choices (alongside Qcells, Longi, and others). Trina supply is typically reliable — one reason installers use them is availability.

When Trina Makes Sense

Trina panels are a solid tier-1 baseline choice for most California homeowners. They're competitively priced, reliably available, and backed by a large public company. If your installer proposes Trina as part of a standard residential install, it's a defensible choice.

Trina may be less compelling if: you specifically want US-manufactured panels (Trina is primarily manufactured in China, so it doesn't qualify for the IRA domestic-content bonus), you want the absolute highest year-25 output guarantee (Qcells Q.Peak Duo or REC Alpha Pure guarantee higher), or you prefer a panel with enhanced-labor warranty coverage from your installer (Silfab Prime has this with Semper Solaris).

Trina vs Other Tier-1 Brands

Compared to Canadian Solar, REC, and Silfab, Trina is generally similar on residential panel spec and warranty, with differences in country of origin, installer relationships, and US-manufacturing status. Modern tier-1 panels from any of these brands will produce within a few percent of each other on the same roof. Pick based on your installer's supply chain, warranty depth, and whether domestic-content is important to you.

Frequently Asked Questions

Are Trina Solar panels good?

Yes. Trina is consistently tier-1 ranked by Bloomberg, PV Magazine, and other industry trackers. Panels are reliable and widely installed across California.

Where are Trina panels made?

Primarily in China, with some manufacturing in Southeast Asia and Brazil. Trina panels do not qualify for the IRA domestic-content bonus.

How long do Trina panels last?

Warranty covers 25 years of product defects and power output. Expected useful life 30-40 years with gradual degradation.

Is Trina Solar publicly traded?

Yes. Trina Solar Co., Ltd. is listed on the Shanghai Stock Exchange under ticker 688599.