50 Best Solar Companies to Watch in 2026

The most prominent solar companies ranked by global prominence, funding activity, and market position. Showing the top 50 out of 7,280 companies tracked on Fsome.

7,280
Total Companies
$358.1B
Total Funding
$49.2M
Avg Funding
London
Top Location
# Company Location Employees Total Funding Last Round Last Funded
1
SB Energy
SB Energy is a digital infrastructure and energy platform that develops, constru…
Redwood City $4.0B Corporate Round 2026-01-09
2
Masdar
Masdar is a state-owned renewable energy company that develops and operates sola…
Abu Dhabi 501 - 1K $3.3B Debt Financing 2025-05-16
3
PowerBank
PowerBank is a renewable and clean energy company that designs, constructs, and …
Toronto 11 - 50 $61.8M Grant 2026-04-07
4
T1 Energy
T1 Energy is a solar and battery manufacturing company for commercial and indust…
Austin 251 - 500 $1.4B Post Ipo Debt 2025-12-11
5
Aspen Power
Aspen Power Partners is a distributed generation platform with the dual mission …
Dallas 51 - 100 $1.1B Debt Financing 2026-01-12
6
SunPower
SunPower is a solar company with a distinct end-to-end customer offering, techno…
Fremont 501 - 1K $155.0M Post Ipo Equity 2026-01-13
7
ReNew
ReNew is a renewable energy company that focuses on solar & wind-energy projects…
Gurgaon 1K - 5K $13.7B Post Ipo Equity 2026-03-16
8
NextPower (formerly Nextracker)
NextPower is a global energy-technology company that delivers integrated solutio…
Fremont 1K - 5K $1.2B Grant 2025-10-27
9
Juniper Green Energy
Juniper Green Energy is a renewable energy power producer specializing in solar,…
Gurgaon 501 - 1K $1.8B Debt Financing 2026-01-06
10
NeoVolta
NeoVolta is a developer of smart residential energy storage solutions.
Poway 11 - 50 $278.2M Post Ipo Equity 2026-01-23
11
Sun King
Sun King designs, distributes, installs, and finances solar energy solutions for…
Nairobi 1K - 5K $990.0M Private Equity 2025-12-11
12
EcoFlow Tech
EcoFlow provides designs, develops and manufactures eco-friendly and affordable …
San Francisco 1K - 5K $114.4M Product Crowdfunding 2021-09-01
13
SolaREIT
SolaREIT is a renewable energy real estate company that offers financing solutio…
Vienna 11 - 50 $340.0M Debt Financing 2026-01-12
14
Inox Clean Energy
Inox Clean Energy serves as an integrated renewable energy platform under the IN…
Noida 251 - 500 $1.3B Debt Financing 2026-01-29
15
Origis Energy
Origis Energy develops and operates solar power plants to provide renewable ener…
Miami 251 - 500 $5.4B Undisclosed 2026-04-08
16
Acumen
Acumen is a non-profit venture fund that uses entrepreneurial approaches to solv…
New York 101 - 250 $20.0M Debt Financing 2025-09-23
17
Aetherflux
Aetherflux develops a novel design for space.
San Carlos 11 - 50 $50.0M Series A 2025-04-02
18
United Solar Polysilicon
United Solar Polysilicon is a clean energy company that provides focused on phot…
Sohar 1K - 5K $2.1B Debt Financing 2026-01-19
19
Solstice
Solstice provides turnkey customer solutions for shared solar.
Cambridge 11 - 50 $4.8M Grant 2024-07-23
20
AMEA Power
AMEA Power is a renewable energy company that develops, owns, and operates clean…
Dubai 101 - 250 $2.0B Debt Financing 2025-12-18
21
Waaree
Waaree is a supplier and manufacturer of high-quality solar PV modules and solar…
Mumbai 1K - 5K $257.9M Private Equity 2023-08-02
22
Pivot Energy
Pivot Energy is a national renewable energy provider that develops, finances, bu…
Denver 101 - 250 $1.2B Debt Financing 2025-12-17
23
Atlas Renewable Energy
Atlas Renewable Energy is a renewable energy company that develops, builds, and …
Miami 101 - 250 $5.0B Debt Financing 2026-04-10
24
Renewa
Renewa is a land and infrastructure investor in the renewable energy industry.
Houston 11 - 50 $1.2B Debt Financing 2026-01-15
25
Tigo Energy
Tigo Energy provides module level power electronics (MLPE) technology for the so…
Campbell 101 - 250 $209.2M Post Ipo Equity 2026-02-24
26
Haven Energy
Haven Energy a climate technology firm that is hastening the adoption of home ba…
Los Angeles 11 - 50 $51.2M Series B 2025-12-09
27
Vikram Solar
Vikram Solar is a solar energy solutions provider, specializing in efficient sol…
Kolkata 1K - 5K $195.4M Debt Financing 2025-08-20
28
Summit Ridge Energy
Summit Ridge Energy offers solar, battery storage project acquisition, project d…
Arlington 101 - 250 $770.0M Debt Financing 2026-01-13
29
Nextpower Arabia
Nextpower Arabia drives solar across the (MENA) with advanced tracker systems de…
Riyadh $88.0M Corporate Round 2026-01-12
30
Capstone Green Energy
Capstone Green Energy is the world’s leading producer of low-emission microturbi…
Chatsworth 251 - 500 $64.6M Post Ipo Equity 2025-11-24
31
GameChange Solar
GameChange Solar are changing the world by making the solar affordable.
New York 251 - 500 $151.7M Series A 2023-02-18
32
ACME Solar
ACME Solar designs, constructs, and operates solar power plants.
Gurgaon 101 - 250 $3.0B Post Ipo Debt 2025-12-18
33
Intersect Power
Intersect Power develops and operates clean energy infrastructure and power gene…
Beaverton 251 - 500 $8.9B Private Equity 2024-12-10
34
Aerem
Aerem provides a platform that offers financing, procurement, and management sol…
Mumbai 101 - 250 $34.2M Series B 2026-01-20
35
Leap
Leap serves as a marketplace linking distributed energy resources with energy ma…
San Francisco 101 - 250 $60.1M Series B 2023-11-16
36
Greentown Labs
Greentown Labs is a climate technology incubator that seeks to invest in the cle…
Somerville 11 - 50 $5.0M Grant 2024-12-18
37
Adapture Renewables
Adapture Renewables develops, owns, and operates utility-scale solar facilities …
Oakland 51 - 100 $554.0M Undisclosed 2026-01-07
38
BoxPower
BoxPower's software and hardware innovations allow utilities and commercial cust…
Grass Valley 11 - 50 $14.4M Series Unknown 2026-01-02
39
Akaysha Energy
Akaysha Energy offers full-cycle development for projects including Battery Ener…
Cremorne 101 - 250 $1.1B Debt Financing 2025-11-05
40
Heelstone Renewable Energy
Heelstone Energy is a leading independent power producer and solar developer wit…
Chapel Hill 51 - 100 $375.0M Debt Financing 2026-01-13
41
Aptera
Aptera Motors is an electric vehicle manufacturer that designs and develops aero…
Carlsbad 11 - 50 $223.7M Series B 2025-10-14
42
Sunstone Credit
Sunstone Credit is an technology-enabled solar loan finance platform for busines…
Baltimore 11 - 50 $20.0M Series A 2023-01-31
43
Yellow Door Energy
Yellow Door Energy develops solar projects to deliver energy solutions for comme…
Dubai 101 - 250 $492.3M Debt Financing 2024-11-13
44
Pine Gate Renewables
Pine Gate Renewables is a developer and owner-operator of utility-scale solar an…
Asheville 251 - 500 $2.0B Private Equity 2024-10-24
45
SolarAfrica
SolarAfrica provides solar energy services.
Centurion 51 - 100 $235.9M Undisclosed 2026-01-14
46
Spearmint Energy
Spearmint Energy is a merchant energy trading company founded to combine innovat…
Miami 51 - 100 $591.5M Corporate Round 2026-01-07
47
BluWave-ai
BluWave-ai is a SaaS-based grid energy optimization platform for more sustainabl…
Ottawa 11 - 50 $11.1M Series A 2023-02-14
48
Astronergy
Astronergy specializes in the research, development, and production of solar mod…
Hangzhou 5K - 10K $552.6M Series C 2023-07-25
49
Enact
Enact's platform enables customers to simplify their solar purchase, also used b…
Pleasanton 11 - 50 $18.3M Series A 2025-07-17
50
Enery
Enery is a renewable energy company that develops and constructs solar energy pl…
Vienna 251 - 500 $763.6M Debt Financing 2026-03-03