Best solar companies California Alternative Energy Systems

Alternative Energy Systems Reviews

Based in Chico, CA. This profile is built from public installation records and published ratings, not paid placement.

3,134verified installs in California utility records*
116recent installs, 2025-26 records*
2006first year in county records
7.8/10Solar.com Score · 118 reviews analyzed

Solar.com Installer Score for Alternative Energy Systems

One score, computed the same way for every installer. We read the full text of all 118 substantive published Alternative Energy Systems review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

7.8/10

Blends the six category scores (70%) with the recency-weighted star record (30%).

Synthesized from 118 substantive customer review texts (149 published reviews collected).

Google 4.6★ · 112 reviewsYelp 4.1★ · 37 reviews

Updated September 28, 2026 · No installer can pay to change this score · How scores work →

Read what customers actually say ↓
Review star recordRecency-weighted star ratings across platforms, converted to a 0-10 signal before it is blended into the headline Solar.com Score.9.8

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.6.5

39 reviews speak to this · 28 praise · 11 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.5.7

20 reviews speak to this · 10 praise · 10 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.6.8

64 reviews speak to this · 48 praise · 16 complaints

Timeline ReliabilityHow well the company manages the path from contract through permits, installation, inspection, and turn-on — without the customer having to chase it.6.5

22 reviews speak to this · 16 praise · 6 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.3

43 reviews speak to this · 41 praise · 1 complaints

Long-Term SupportHow well the system performs after turn-on, how the company handles monitoring, warranty claims, and service calls — and its staying power to honor them.7.8

30 reviews speak to this · 23 praise · 7 complaints

#435 of 678 scored in California by Solar.com Installer Score

How does Alternative Energy Systems compare where you live? Rankings are local; an installer that leads one city can trail in the next. See how they rank in your city →

Why this differs from star ratings: most five-star reviews say “great company” and stop, and star averages reward that. These category scores only count reviews with concrete evidence, weighted by recency and the reviewer’s track record. A company can hold a strong star average while specific categories score lower; that gap is usually where the real story is. Categories with more complaints than praise are the questions worth asking any bidder, not necessarily dealbreakers.

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Where Alternative Energy Systems builds

County-by-county activity from CPUC records through May 2026.

What this data covers: *Counts on this page, including the totals up top, come from investor-owned-utility interconnection records (SCE, SDG&E, PG&E). Work in municipal-utility territory, such as LADWP or city utilities, and outside California does not appear here, so this company's true totals are higher than shown. Unlike the county rankings, this profile also shows counties below the 250-install ranking floor.

CountyVerified installsRecent 2025-26Active sinceMedian system% leasedCounty rankingLink to the county ranking page. This company's rank on this page is its Solar.com Installer Score rank, shown above.
Butte County2,1389020067.2 kW0.4%See county ranking →
Tehama County2951120079.0 kW0.7%See county ranking →
Glenn County257520078.1 kW0.4%See county ranking →
Sutter County154120117.8 kW0.0%See county ranking →
Shasta County146520099.0 kW1.4%See county ranking →
Yuba County96220116.4 kW0.0%below ranking floor (under 250 installs)
Colusa County22220127.1 kW0.0%below ranking floor (under 250 installs)
Placer County16020157.7 kW0.0%below ranking floor (under 250 installs)
Yolo County10020168.6 kW10.0%below ranking floor (under 250 installs)

% leased counts systems recorded as third party owned (lease or power purchase agreement); the remainder are customer owned. Median system size is the middle system this company installed in that county. Star ratings and review counts are from Google.

Alternative Energy Systems reviews: what customers say

An independent synthesis of published customer feedback across Google and Yelp, updated September 23, 2026. Green marks praise, amber mixed experiences, red complaints.

Sales & proposal integrity

Sales Integrity6.5/10

Reviewers most often describe the sales process as helpful and informative, with several saying they got clear explanations of system options and felt confident in their choices. Complaints are also material, though, and focus on pressure, unanswered follow-up questions, and expectations that did not match later experience.Solar.com's composite of published customer feedback, not a customer quote

Clear explanations. Several reviewers say representatives walked them through options and answered questions in a way that helped them feel comfortable with the proposal. These accounts describe a low-pressure, informative sales experience. Representative review excerpt: "He walked us through a few different options for the system and gave us enough information that we were able to have a lot of confidence in our final choice."

Helpful follow-through. Some customers report that a sales contact handled early communication and kept the process moving. This suggests the handoff from proposal to project launch was smooth for part of the review set. Representative review excerpt: "John my sales guy was great and did most of the follow through and office communication during the initial start."

Pressure and follow-up gaps. Other reviewers describe pressure during the sales process or say their questions went unanswered after the sale. A few also report that later pricing or service expectations did not line up with what they believed was promised. Representative review excerpt: "They create problems that should not even be problems when you don't give into their pressure."

Price & financing transparency

Price Transparency5.7/10

Feedback on pricing and financing is mixed, with some reviewers saying the financing process was handled smoothly and the value was worthwhile. Still, a significant share of complaints centers on surprise costs, deposit or refund disputes, and incentive timing or pricing assumptions that changed over time.Solar.com's composite of published customer feedback, not a customer quote

Surprise costs and deposit disputes. Complaints include unexpected bill amounts, disagreement over refunds, and frustration when pricing or incentive timing changed the final value customers thought they were getting. Reviewers also describe situations where service or warranty-related costs were not explained to their satisfaction. Representative review excerpt: "You are the ones that canceled the contract therefore you should refund my deposit in FULL!!!!"

Financing support. Some reviewers say the company handled financing smoothly and helped make the purchase process easier to manage. These comments frame the financial side of the project as organized and straightforward. Representative review excerpt: "Very smooth process and they handled the process of financing which helped a lot."

Value for quality. A few customers say the price was acceptable because they felt the workmanship and service justified it. These reviews are positive, but they still imply price was a consideration rather than a standout strength. Representative review excerpt: "While their price may have been a little higher than some of the competition, it was well worth it for the quality of work and service."

Communication & coordination

Communication6.8/10

Most reviewers describe the company as responsive and supportive during parts of the project, especially when staff took time to explain options or work with customer schedules. The complaint pattern is still meaningful and focuses on missed callbacks, unclear handoffs, and communication that seemed to fade after the sale or service visit.Solar.com's composite of published customer feedback, not a customer quote

Responsive and patient. Several reviewers say staff were patient, explained the process clearly, and helped them navigate questions during an already stressful time. These accounts point to strong interpersonal support when communication was working well. Representative review excerpt: "My family had a lot going on personally at the time (death in the family) and we were stressed and also had a lot of questions."

Helpful coordination. Some customers say the company coordinated well across multiple steps or multiple projects, and that staff worked through questions without making the process feel difficult. These reviews suggest solid project ownership in successful cases. Representative review excerpt: "We have utilized your services twice now (two separate projects) over the last number of years, and each time, you did not disappoint."

Missed callbacks. Complaints describe calls that were not returned, questions that went unanswered, and service communication that did not continue after the initial sale or job visit. Some reviewers also report confusion around account or service changes.

Timeline reliability

Timeline Reliability6.5/10

Reviewers often say work was completed on time or even ahead of schedule, with crews showing up as planned and finishing quickly. At the same time, a smaller but real complaint pattern mentions delays, slow starts, and waiting through permitting or activation steps longer than expected.Solar.com's composite of published customer feedback, not a customer quote

On-time visits. Some reviewers say scheduled crews arrived on time or early and completed work quickly. These comments suggest good day-of coordination when appointments were set. Representative review excerpt: "Each time somebody was scheduled to be here, they were on time (or even a little early), they did high quality work, and they were super pleasant human beings to..."

Fast completion. A few customers describe projects that moved from installation to finish efficiently, with electrical or final steps wrapped up shortly afterward. This points to reliable execution on at least some timelines. Representative review excerpt: "They installed the Sunpower panels completely on a Friday and the next Tuesday (Monday was a holiday) their electrician came out and finished the installation that day."

Delays and waiting. Other reviewers report slow starts, long waits, or project delays that affected financing or activation timing. A few also describe a prolonged period before the system was fully operating. Representative review excerpt: "So after 8 months and more excuses I would like to say all done and working but that's not the case."

Workmanship & site care

Workmanship8.3/10

Workmanship is one of the stronger parts of the review record. Reviewers frequently describe professional crews, careful installation, clean job sites, and solid attention to quality, with only a rare mixed note about difficult roof access.Solar.com's composite of published customer feedback, not a customer quote

Professional crews. Reviewers often say the installation team was professional, patient, and timely, with work that met or exceeded expectations. These comments show strong confidence in the crew’s overall conduct. Representative review excerpt: "AES was nothing but professional the entire time, very patient, timely, and did A+ quality work."

Clean finish. Some customers specifically mention spotless cleanup and technicians who reviewed the work before leaving. That kind of detail suggests care for the home as well as the system itself. Representative review excerpt: "Your technician, Sandro, consistently arrives on time, performs high-quality work, leaves the area spotless, and takes the time to review the system with me before he leaves."

Site challenges noted. One mixed review notes that accessing panels on a metal roof was time-consuming and difficult. The comment does not describe poor workmanship, but it does show that certain installs can be more complex. Representative review excerpt: "Some time consuming and difficult accessing the panels on the metal roof."

Long-term support & performance

Long-Term Support7.8/10

Post-install feedback is generally positive, with many reviewers saying the system produced well, monitoring worked, and service issues were addressed effectively. Even so, complaints do appear around billing expectations, account changes, and follow-up after the sale or service period, so the picture is not uniformly strong.Solar.com's composite of published customer feedback, not a customer quote

Strong production. Several reviewers say their systems are producing well or even overproducing, and some mention monitoring or battery activity that confirmed the system was working as expected. These are clear signs of positive post-install performance. Representative review excerpt: "I am overproducing and putting into the grid every day, despite running 3 AC units in 3 structures, plus a 220v well pump and a wife who has never turned..."

Fast problem resolution. A number of customers say service issues were identified and fixed quickly after installation. In these reviews, the company appears responsive when a system needs attention. Representative review excerpt: "I called about a problem with my system and within 2 hours the technician was there to fix the issue."

Post-install frustrations. Complaints include billing surprises, concerns about ongoing service costs, and cases where customers say follow-up after the sale was limited. Some reviewers also report account or service changes that made it harder to track system performance or support. Representative review excerpt: "I mentioned more than once that the service should be included since it was a leased system, and I should not be charged for any service visits."

Bottom line: ALTERNATIVE ENERGY SYSTEMS earns a 7.8/10 overall from 118 substantive reviews. Reviewers are most positive about workmanship and post-install system performance, while pricing transparency and sales expectations draw the most consistent criticism. Communication and timeline reliability are generally decent but show enough missed follow-up and delay complaints to keep the overall picture mixed.

How this is built: category scores and summaries weigh the company's full published rating record (112 Google reviews averaging 4.6 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.

About Alternative Energy Systems

Company background from published business information and licensing records.

Also files CPUC records as: Alternative Energy System.

Products

Solar

Service area

California. Note: the install counts on this page cover California investor-owned-utility records only.

Work for this company or see something out of date? Profiles can be claimed and corrected: contact partners@solar.com. Placement on solar.com is never for sale.

Recorded installs by year

Residential interconnections statewide in PG&E, SCE, and SDG&E records through May 2026.
5
2006
24
'07
22
'08
29
'09
29
'10
54
'11
46
'12
33
'13
126
'14
297
'15
357
'16
289
'17
240
'18
286
'19
205
'20
251
'21
294
'22
307
'23
153
'24
101
'25
16
'26

Important context: this chart shows investor-owned-utility records only. Companies that shift work toward municipal-utility territory (LADWP and city power departments) or other states will show declining bars here even while building steadily elsewhere, and 2025-26 records also lag real installation dates. Treat this as a partial window, not the company's full trajectory.

FAQ about Alternative Energy Systems

What do customers say in Alternative Energy Systems reviews?

We analyzed 118 substantive published customer reviews of Alternative Energy Systems in full. The company's Solar.com Installer Score is 7.8/10, with category-level detail on this page covering sales integrity, price transparency, communication, timeline reliability, workmanship, and long-term support.

How many solar systems has Alternative Energy Systems installed?

Alternative Energy Systems appears as installer of record on 3,134+ residential systems in California investor-owned-utility interconnection records through May 2026. Work in municipal-utility territory or other states does not appear in those public records.

How can I compare Alternative Energy Systems' pricing?

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How we built this data

Methodology: Counts are residential PV interconnections in investor-owned-utility territory (PG&E, SCE, SDG&E) per CPUC Rule 21 public records through May 2026. Postal and name variants are merged. Municipal utility territory such as LADWP, Glendale, Pasadena, Burbank, Anaheim, and Riverside Public Utilities is not included in those CPUC counts. Counts show recorded installations, not quality ratings. Reported costs are self-reported on owned-system interconnections. No installer can pay for placement.

Who we are: Solar.com is a solar marketplace — we connect homeowners with installers and earn a fee when projects move forward. These rankings and scores are computed from public installation records and published customer reviews. No installer can pay for placement, and no installer — including those we work with — can pay to change a score.