Best Solar Energy Companies in Arizona, United States
The 51 best Solar Energy companies in Arizona, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: NovaSource Power Services.
Our analysis of 50 Solar Energy companies
$17.8b in tracked funding; 84% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Solar Energy companies in Arizona
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | NovaSource Power Services Provider of solar O&M services | $100M | 47 mo ago | Late Stage | Akshay Sagar President and Chief Executive Officer | 2020 | WordPress Block EditorWordPressZoho+19 | — | 3 job openings |
| 2 | ERTHOS Manufacturer of solar PV modules | $53M | 35 mo ago | Series C | Jim Tyler CEO | 2017 | WordPressMySQLPHP+37 | 50 patents Patents concentrated in electrical & electronics | 3 launchs · 1 partnership |
| 3 | Depcom Power Utility-scale solar and energy storage solutions provider, delivering lasting energy solutions | $20M | 118 mo ago | Acquired | — | 2013 | WordPressMySQLPHP+23 | — | — |
| 4 | REhnu TPV technology developer with option to harvest both power and thermal heat | $3M | 90 mo ago | Series A | Roger Angel Founder & CTO | 2009 | — | — | — |
| 5 | Amtech Systems Manufacturer of solar cells, semiconductors, and silicon wafers | $2M | 255 mo ago | Public | Jong Whang Founder & Co-CEO | 1981 | SalesforceAzureApache HTTP Server+10 | — | — |
| 6 | Fusion Power Provider of solar maintenance & monitoring, repair, and installation services for residential & commercial… | $2M | 12 mo ago | Funding Raised | Tyler Mcallister Founder & Co-Owner | 2017 | WordPress Block EditorElementorWordPress+36 | — | — |
| 7 | New Use Energy Provider of rugged portable power stations, solar panels, and battery solutions | $200K | 63 mo ago | Seed | — | 2020 | ShopifyElement UIBootstrap+28 | — | 1 partnership |
| 8 | Kinematics Provider of solar energy operation & maintenance services | — | 146 mo ago | Late Stage | John Payne Chief Executive Officer | 1996 | — | 44 patents Spacecraft antenna and solar array positioning mechanisms with integrated torque sensing | — |
| 9 | Rooftop Solar Offers commercial and residential solar solutions | — | 151 mo ago | Seed | — | 2009 | WordPressMySQLPHP+21 | — | — |
| 10 | ABCO Energy Alternative energy solutions provider specializing in solar, HVAC, LED, and financing | — | — | Unfunded | Charlie Dowd CEO & President | 2012 | — | — | — |
| 11 | ABCO Solar Arizona's solar panel experts providing residential, commercial, and LED lighting solutions | — | — | Public | — | 2008 | — | — | — |
Top 9 Solar Energy companies in Arizona
#1
Funding Raised · Chandler, Arizona · founded 2017 · 161 employees$2Mraised▾
Fusion Power is Arizona's #1 Solar Sales Organization and quickly growing.
- Jul 2025Conventional Debt$2M
#2
Series C · Tempe, Arizona · founded 2017 · 86 employees$52.8Mraised▾
Manufacturer of solar PV modules
- Aug 2023Series C$24.5M
- Dec 2022Series B$1M
- Feb 2022Series B$17.5M
- Aug 2021Series A$500K
#3
Late Stage · Chandler, Arizona · founded 2020 · 518 employees$100Mraised▾
Provider of solar O&M services
- Aug 2022PE$100M
#4
Acquired · Phoenix, Arizona · founded 2013 · 101 employees$20.4Mraised▾
Utility-scale solar and energy storage solutions provider, delivering lasting energy solutions. The company is a trusted leader, providing proven solutions across the project lifecycle. With deep technical expertise and financial strength, they offer development support, engineering, procurement, construction (EPC), plant services, and field services. They support complex, large-scale PV and battery energy storage (BESS) projects, working with utilities, IPPs, and large energy users. The company delivers fully integrated EPC and lifecycle services, focusing on long-term operations. They are committed to optimizing energy cost, performance, and reliability, offering innovative solutions for a sustainable energy future. They are a B2B company, providing renewable energy solutions, project management, and long-term service agreements.
- Sep 2016Series B$15M
- 2016Angel—
- May 2016Series A$875K
- May 2015Series A$950K
#5
Series A · Tucson, Arizona · founded 2009$3.2Mraised▾
REhnu solar develops Thermal PV solutions which captures solar energy both in the form of power as well as usable thermal heat. Their concentrated structures uses commercial multi-junction PV cells with 42% efficiency in the center to harvest solar energy in the form of power, apart from this, the heat thus captured by a heat transfer fluid, and can be provided as additional thermal power output. REhnu is now manufacturing 800W photovoltaic mirror modules at its Tucson headquarters, each module with a 25 square foot glass mirror and 36 multi-junction cells in a small power converter unit. The modules are sold in dual-axis trackers carrying either two or eight modules. Both trackers are available with the option of hot water as well as electrical output. In addition to modules and trackers, They also supply concentrating mirrors customized for a variety of solar generation or illumination applications, and provid consulting services.
- Feb 2019Grant (prize money)$224.8K
- Jun 2017Series A$400K
- Jan 2015Series A$754.2K
- Jun 2013Series A$350K
#6
Public · Tempe, Arizona · founded 1981 · 405 employees$2.2Mraised▾
Manufacturer of solar cells, semiconductors, and silicon wafers
- Apr 2005Post IPO$2.2M
#7
Seed · Tempe, Arizona · founded 2020 · 8 employees$200Kraised▾
Provider of rugged portable power stations, solar panels, and battery solutions. The company engineers mobile solar and battery generator systems, plus industrial lithium batteries. Products are designed for commercial, industrial, and government use. Product lines include portable solar plus battery generators encased in durable cases, offering AC and DC power output. Also offered are lithium iron phosphate batteries in various voltages.
- Apr 2021Seed$200K
- Apr 2021Conventional Debt—
#8
Late Stage · Phoenix, Arizona · founded 1996 · 400 employees—raised▾
Provider of solar energy operation & maintenance services
- May 2014PE—
#9
Seed · Flagstaff, Arizona · founded 2009 · 30 employees—raised▾
Offers commercial and residential solar solutions
- Dec 2013Seed—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Solar Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Solar Pv in Arizona is moving
A read on the academic research around Solar Pv in Arizona — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 137 papers.
- Arizona State University94
- University of Arizona41
- Arizona Research Center1
- Mayo Clinic in Arizona1
- Solar energy1→5
- Solar energy4→11
- Photovoltaic system2→6
- Photovoltaics2→4
- Silicon1→3
- Renewable energy2→3
- Nanotechnology1→3
- Heterojunction1→3
- Photovoltaic system1→3
- Solar energy2→4
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.