Tephra Solar Logo

Tephra Solar

star star star_border star_border star_border


Overall Score

LAST UPDATED: September 10th, 2022

Tephra Solar is an affordable, residential solar provider that provides renewable energy to 14 states: California, Colorado, Arizona, North Carolina, Florida, Minnesota, Missouri, Utah, New Mexico, South Carolina, Idaho, Nevada, Wyoming, and Illinois.

Tephra installs custom-designed solar systems by connecting clients to certified, local solar experts. The company's process starts with a consultation in which a Tephra consultant creates a free estimate based on the client's energy usage and the size of home and roof and then helps select the right plan. Tephra engineers then take precise measurements of the roof and create a customized solar system.

During installation, Tephra Solar takes care of permits and scheduling, easing the process for the client. Most installations take just one day. Clients can potentially save up to 10 to 30 percent on their energy bill through Tephra's solar systems.

Top Ranked Companies

SunPower Logo
#1 SunPower chevron_right
9.9 Overall Score
star star star star star_half
ADT Solar Logo
#2 ADT Solar chevron_right
9.3 Overall Score
star star star star star_half

The Good

  • Solar Service Payment Options
  • Experienced CEO

Solar Service Payment Options

Tephra offers four service payment plans to finance a solar panel installation:

  • Purchase — When clients purchase the solar service outright, they immediately own the system with no monthly payment, but have upfront costs. This option qualifies for the federal solar tax credit, worth 26 percent of upfront costs.
  • Loan — Through a loan, clients can own their solar system with little to no money down by paying a monthly payment to the financing partner.
  • Power purchase agreement — With a solar PPA, the client has no upfront costs and is essentially renting the equipment and paying for the energy they use (often at a rate lower than their current energy bill).
  • Lease — Tephra also offers leasing plans. Leasing solar systems is similar to PPA plans in that the client has no upfront costs and rents the equipment, but instead of paying for what they use, they pay a set amount each month. Clients do not own the equipment with PPA and leasing plans and clients may also be bound to a long term contract with possibility of an annual increase of interest rate.

Experienced CEO

CEO Jared Slemboski previously worked at Vivint Solar, a residential solar energy company that operates in 23 states, before starting Tephra Solar. Jared Slemboski worked at Vivint Solar for more than four years as a District Sales Manager in East Bay California and Director of Sales for Northern California.



The Bad

  • Short Time in Business
  • Solar Panels Undisclosed
  • Warranty Lengths Undisclosed

Short Time in Business

Founded in 2017, Tephra Solar has only been in the solar industry for three years. When clients choose a younger solar company, they run the risk of it not being in business for the solar system's full warranty. If a solar company goes out of business before the full warranty, clients lose the remaining warranty on their system and have to hire a separate solar company for maintenance services.

Solar Panels Undisclosed

Tephra Solar does not disclose the types of panels the company installs or the manufacturers it uses. There are three commonly installed solar panels:

  • Amorphous — Amorphous panels are more affordable, but have the lowest efficiency and durability ratings out of the three panel options.
  • Polycrystalline — Polycrystalline panels are a good option for clients who have plenty of installation space, but need a more affordable option than monocrystalline.
  • Monocrystalline — Monocrystalline panels are popular because they have the highest efficiency ratings and take the least amount of space.

Clients will need to ask for further information on the types of panels Tephra provides and research the reputation of the manufacturer.

Warranty Lengths Undisclosed

Although Tephra Solar states that system warranties are provided in its payment plans, it does not disclose any details pertaining to its warranties. Solar systems are an investment and warranties help protect clients from additional, unexpected costs. Reputable solar companies will offer the following:

  • Equipment warranty of 10 to 12 years
  • Performance warranty of 90% up to 10 years
  • Performance warranty of 8% up to 25 years

The Bottom Line

Tephra Solar offers four finance options to help customers in various circumstances benefit from cost saving solar energy. We recommend reading contracts for PPA and leasing agreements closely to look for increases in annual rates.

Tephra Solar does not disclose much information on its website pertaining to its solar panel types and warranties. Clients need to ask Tephra Solar specific questions about the solar panels, solar panel manufacturers, and length of warranties. We recommend comparing the solar panel types, solar panel manufacturers, and length of warranties to other well established solar companies before hiring.

View Best Solar Companies

Was this content helpful?
thumb_up Yes thumb_down No

Star Rating


star star star_border star_border star_border

10 Reviews

Review Breakdown

5 grade


4 grade


3 grade


2 grade


1 grade


Sentiment Criteria


star star star_half star_border star_border


star star star_border star_border star_border


star star_half star_border star_border star_border


star star_half star_border star_border star_border

Filter by:


Sort by:


Review Source

star star star star star

Penelope Harrison Aurora, CO

Great working with Tephra for solar installation. Dan E responded promptly to all inquiries and kept me informed on the progress. Highly recommend this company.

5 months ago

star star star star star

Emo Emerson Hurricane, UT

They were personable, open honest and knowledgeable. We felt like we would probably become very good friends with the salesman, because he was interested in us and what we did. John was interested in our getting our stuff right and the best for us.

10 months ago

star star star star star

Happy customer Riverview, FL

We had the best experience with Tephra. The sales rep Mercedes was the absolute best. She explained everything to us thoroughly, set us up with our solar panels and we couldn’t be happier! She came back to visit after installation and really sold us on loving our panels! Solar is the way to go and we couldn’t pass up the 26% rebate and the overall benefits solar will have on my family and the planet.

1 year ago

star star_border star_border star_border star_border

Gerrie Maveety

Finished sale in March 2022. It's now September 2022, NO SERVICE, paid the loan company 4 consecutive payments and still paying $350 or more in electric bills. Lost a whole sunny summer of credits here in Nevada. Our electric bill has actually increased. Wondering how I made this mistake. Efforts to reach Tephra have fallen on deaf ears. No answers or returned calls from the company. I may need to contact a lawyer. Save yourself the time and aggravation and do not use this company!

4 months ago

star star_border star_border star_border star_border

AngeloJ Colorado Springs, CO

True to their words they have installed solar panels to my home in May 24, 2022. But are they producing power no their current state. According to Tephra Project management website my project is only 87% complete. Im waiting on an inspection from Pikes Peak Regional Building Department. https://app.portalcx.io/portal/2d8894a0-bdab-4abd-8e8a-1fe20fd41138. At first when I reach out Tephra Project Management team they informed me of plan changes and that it would have to be resubmitted. I was told wait 2 weeks. Then they just stop picking up the phone after I've waited and called back. Ive texted the persons provided the updates and no answer. Ive called Colorado Springs Utilities to what was holding up was CSU stated that a inspection is required. Was able to access my Pikes Peak Regional Building Department plans/permits online and show no movement from May 12, 2022. Now I'm stuck with paying for solar panels and a electric bill.

6 months ago

star star_border star_border star_border star_border

frustrated Colorado Springs, CO

Have waited MONTHS to complete my installation. Communication from their Project Manager has been frustrating at best, wasting a LOT of my time on missed appointments, failed inspections, and weak excuses. Cannot recommend.

5 months ago

star star_border star_border star_border star_border

Jesse Pueblo, CO

We were sold system that doesn't even cover the electricity we use. We are now paying for a useless system alo g with a utility bill. I have called and emailed for o er a year and nothing has been done. All we hear is they will get back to us. I am now looking into a lawyer. Worst company I have ever dealt with. Don't bother with them.

8 months ago

star star_border star_border star_border star_border

Mark S Salt Lake City, UT

Their sales tactics are very misleading and disrespectful to every homeowner. To tape a flier to the garage door leaving residue. Misleading people to think that this is Rocky Mountain Power that is trying to get homeowners to call. Our city has No Soliciting regulations and what they did is blatant disregard to these rules.

8 months ago

star star_border star_border star_border star_border

Clinton Dowland Herriman, UT

I have never been so dissatisfied with a company they promise a lot and deliver very little. Just try getting ahold of customer service. My salesman totally ghosted me before the panels were installed. He promised to be there through completion. The last time he got back with me he was very negative about the company also. Not very comforting feeling I have about them being Around much longer

5 months ago

star star_border star_border star_border star_border


I have been disappointed in Tephra. It months longer than agreed to install the panels and then I never received the $400 referral bonus I was promised after I got my son to install. He also is unhappy with Tephra. Sorry I got them involved!

1 year ago