Semper Solaris

4.8 (1235 reviews)

| El Cajon, CA | Solar

Semper Solaris is an El Cajon, CA-based solar contractor that also specializes in home battery storage and roofing services.

At a Glance

Category: Solar
Location: El Cajon, CA
Rating: 4.8/5 (1235 reviews)
Phone: +16193574142
Services: Roofing Contractor, General Contractor, Service

About Semper Solaris

Semper Solaris is a solar contractor operating in El Cajon, CA, specializing in solar panel installations. They hold a Google rating of 4.8/5 based on 1235 reviews. The company also operates as a roofing contractor and general contractor. Information on specific certifications or years in business is not provided.

The company primarily performs solar installations for residential properties. As a general contractor, they may handle associated electrical work and roofing modifications necessary for solar projects. The services align with home electrification goals by providing renewable energy solutions. Their subcategories indicate capability in broader construction and service roles.

When evaluating Semper Solaris for a project, homeowners may consider their experience in solar installations, particularly for their specific roof type. Inquire about equipment brands used, warranty details, and project timelines. Due to their additional classifications as a roofing and general contractor, it is advisable to clarify the scope of work included in a solar installation bid and if it covers any necessary roof repairs or upgrades. Obtain multiple quotes to compare pricing and services.

Services

Roofing Contractor

General Contractor

Service

Point Of Interest

Establishment

Hours

Friday 7:00-0:00 Monday 7:00-0:00 Sunday 9:00-0:00 Tuesday 7:00-0:00 Saturday 7:00-0:00 Thursday 7:00-0:00 Wednesday 7:00-0:00

Business information verified via Google Business Profile. Last updated: 2026.

Last verified: May 2026

Contact

1805 John Towers Avenue

El Cajon, CA 92020

(619) 357-4142

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Map

How to evaluate Semper Solaris

Before hiring Semper Solaris for solar work in El Cajon, take a few minutes to verify their qualifications and confirm they are the right fit for your project. The right solar for one homeowner may not be the right fit for another, so do the diligence up front.

Verify licensing and insurance

Confirm that Semper Solaris carries an active CA contractor license appropriate for the scope of work, plus general liability and workers’ compensation coverage. Ask for the license number and look it up on the state board website. A solar that hesitates to share these details is a red flag, regardless of how favorable their reviews look.

Get a written, itemized quote

Request a detailed written estimate that lists materials, labor, permit fees, timeline, and payment schedule. Itemized quotes make it possible to compare Semper Solaris side-by-side with other solar options in El Cajon, and they protect you from scope creep once the work begins.

Ask about project experience

Ask Semper Solaris how many projects similar to yours they have completed in the last 12 months, whether they will be the primary on-site team or are subcontracting, and how they handle change orders. Request two or three local customer references and actually call them — reviews on Google are useful but a five-minute conversation reveals much more about how a solar actually shows up.

Frequently Asked Questions

What services does Semper Solaris offer in El Cajon?

Semper Solaris in El Cajon offers a comprehensive range of home improvement services including solar power installation, battery storage solutions, roofing repair and installation, and heating and air conditioning (HVAC) services.

Does Semper Solaris offer any deals or promotions?

Yes, Semper Solaris is currently running a "Solar Sale" where they pay the tax on qualifying purchases. They also offer various deals and offers for solar, battery storage, HVAC, roofing, and window replacement, which can be viewed on their website.

Why should I consider solar battery storage from Semper Solaris?

Solar battery storage from Semper Solaris, featuring products like the Tesla Powerwall, allows homeowners to store solar energy for use at night or during peak hours, protecting against Time-of-Use rate spikes and providing a safety net during power outages from providers like SDGE.

What makes Semper Solaris a reliable choice for roofing services?

Semper Solaris aims to be the best roofing company in El Cajon, offering a 50-year warranty, being a preferred contractor, and providing cool roof protection to ensure quality and durability for your home's roof.

Is Semper Solaris involved with the community or veteran support?

Yes, Semper Solaris, a veteran-owned company, actively supports veterans and first responders through hiring and discounts. This commitment to veteran values was highlighted by actor and Marine Corps veteran Rob Riggle, who chose them for his solar and Tesla Powerwall installation.