Sales & proposal integrity
Sales Integrity7.7/10
Reviewers largely describe the sales process as clear, informative, and low-pressure. A small number of complaints mention bid changes, site-visit fees, or expectations that shifted during final contract steps.Solar.com's composite of published customer feedback, not a customer quote
Clear, informative sales process. Many reviewers say the proposal phase was straightforward, with staff explaining the process, answering questions, and setting expectations clearly. Representative review excerpt: "They fully explained how it would go/went, what to expect and any other questions I could come up with."
Low-pressure approach. Reviewers also describe the sales style as helpful rather than pushy, with information presented and decisions left to the customer. Representative review excerpt: "We appreciated that it was low pressure; he simply gave the information, answered all of our questions, and then left it up to us."
Contract and fee watch-outs. A few reviewers report changes to the original bid, unexpected fees for a site visit, or pressure around proposal terms near the end of the sales process. Representative review excerpt: "Initially Allterra was our choice, but when got down to finalizing the go ahead contract, they waffled on the original bid and increased it significantly."
Price & financing transparency
Price Transparency6.8/10
Feedback on pricing is generally favorable, with several reviewers saying costs were reasonable, deposits were handled smoothly, and payment timing was managed with flexibility. At the same time, this category has a meaningful set of complaints about bid changes, financing discussions, surprise cost concerns, and rebate or incentive timing.Solar.com's composite of published customer feedback, not a customer quote
Reasonable pricing and flexible payment. Some reviewers say the project cost felt fair, payments were handled smoothly, and the team was patient around final payment timing. Representative review excerpt: "They were patient with me on my final payment as I was waiting for a home equity line to fund."
Deposit and upfront handling. Reviewers also mention smooth deposit handling and upfront answers to questions about the financial side of the project. Representative review excerpt: "They refunded me my deposit without any issues and consistently delivered excellent customer service."
Pricing and financing concerns. Other reviewers report changes to the original bid, repeated financing discussions when they were not interested, or concerns tied to rebate timing and later cost surprises. Representative review excerpt: "Initially Allterra was our choice, but when got down to finalizing the go ahead contract, they waffled on the original bid and increased it significantly."
Communication & coordination
Communication8.2/10
Most reviewers describe the company as responsive, helpful, and easy to reach during the project. The few complaints focus on unreturned inquiries, scheduling uncertainty, or poor follow-through on some service requests.Solar.com's composite of published customer feedback, not a customer quote
Responsive project updates. Reviewers frequently praise quick replies and steady communication from inquiry through installation, including clear handoffs among staff members. Representative review excerpt: "Excellent communication from the initial inquiry, to the installation, Greg, Micah, Aubrey and staff were responsive to my questions and Miguel’s installation went smoothly and quickly."
Friendly and helpful follow-up. Several reviewers describe the staff as prompt, attentive, and easy to work with when questions came up. Representative review excerpt: "She called back promptly, was a great listener, and came across as friendly and helpful."
Gaps in follow-through. A small number of reviewers say their inquiries went unanswered or that scheduling and service follow-up did not stay consistent. Representative review excerpt: "They have not responded to any of my inquires over the last year, which included how we could add to my existing system, how to determine why 2 panels underproduce..."
Timeline reliability
Timeline Reliability7.6/10
Most reviewers say the project moved on schedule, including installation, removal and replacement around reroof work, and grid connection. The limited complaints center on estimate timing, permit-related delays, and cases where customers felt the process stalled before completion.Solar.com's composite of published customer feedback, not a customer quote
On-schedule installation work. Reviewers commonly say the crew arrived as planned and completed the work within the expected window. Representative review excerpt: "The install crew led by Saki and Jeremiah arrived as scheduled, took the time to explain what they would be doing over two-days, answered all questions, and completed the work..."
Coordinated around reroofing and activation. Some reviewers note that panels were removed and reinstalled promptly around reroof projects, and that the team worked through coordination issues to get the system connected. Representative review excerpt: "You removed the panels within two weeks or so of being notified of the start of a reroof project and replaced them in about a week of its completion."
Permit and estimate timing issues. A few reviewers report scheduling uncertainty, missed timing for estimates, or delays that carried into inspections and permit closeout. Representative review excerpt: "The inspection never passed and they ignored repeated requests to get everything finished, until the permit expired and then they tried to stick me with blame."
Workmanship & site care
Workmanship8.6/10
Installation feedback is mostly positive, with reviewers describing professional crews, clean work, and careful handling of roofs and equipment. The smaller complaint set points to safety concerns, equipment placement choices, or isolated site-care issues.Solar.com's composite of published customer feedback, not a customer quote
Professional, careful crews. Reviewers often describe the installers as professional, polite, and careful while working on the roof and around the home. Representative review excerpt: "Everyone from the sales person, to billing, customer service, and the installers were knowledgeable, professional, helpful and polite."
Clean and tidy workmanship. Several reviewers say the finished work was clean and that the installation details were handled neatly. Representative review excerpt: "The equipment they installed is of top-notch quality, the quote was competitive, their staff was knowledgeable and professional, and their work was clean."
Site-care concerns. A few reviewers mention concerns about roof safety practices or specific equipment placement decisions that they did not like. Representative review excerpt: "I was very happy with the installation, and the team who worked on ours was great (though they did not secure themselves at all while on my roof, and frankly..."
Long-term support & performance
Long-Term Support8.8/10
Long-term feedback is a strength overall, with many reviewers saying systems have performed well for years and that support remained responsive after activation. The limited complaints focus on underperforming equipment, inverter failures, or difficulty getting post-install help on specific issues.Solar.com's composite of published customer feedback, not a customer quote
Strong long-term performance. Reviewers report systems working well over time, including examples of multi-year performance after installation. Representative review excerpt: "Alterra Solar installed my system 10 years ago and it’s been working great."
Helpful warranty support. Some reviewers say the team stayed attentive after the install and helped them work through warranty-related questions or issues. Representative review excerpt: "I recently had an inverter issue and they helped me go through the warranty process."
Post-install issues in a few cases. A small number of reviewers describe inverter failures, underproducing panels, or difficulty getting support when performance problems appeared later. Representative review excerpt: "But now I am stuck with a system where 10% of the panels seem to not be working, and I am getting no support at all from Allterra."
How this is built: category scores and summaries weigh the company's full published rating record (73 Google reviews averaging 4.9 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle and Yelp. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.