Hawaii's solar energy industry is increasingly vital as the state aims for 100% renewable energy by 2045. Companies in this sector range from installers to service providers and energy storage experts. They not only offer solar panel installation but also energy management solutions and financing options. The market is dynamic, driven by innovations in technology and incentives for residents and businesses. Amid growing demand for clean energy, the industry is positioned for significant growth. Hawaii's unique geographic and climatic conditions further enhance the viability of solar energy solutions, making this sector an essential component of the state's economic future.


This article highlights 19 notable solar energy companies based in Hawaii, varying in size from small local firms to larger corporations. Most are headquartered in Honolulu, reflecting the city's central role in the industry. Founded primarily between 1975 and 2019, these companies specialize in solar installations, energy storage, and efficiency consulting. Many prioritize sustainability and community engagement, while others focus on innovative solar technologies. By exploring their services, you gain insight into Hawaii's solar market and the firms shaping its future.


Continue reading to discover the top solar energy companies in Hawaii.


Top 19 Solar Energy Companies in Hawaii


1. Alternate Energy Inc.


Alternate Energy Inc., based in Honolulu, Hawaii, has been a significant player in the renewable energy sector since its inception in 1993. The company specializes in solar energy systems, air conditioning, and battery storage solutions, catering to both residential and commercial customers. With a workforce of around 61 employees, Alternate Energy is dedicated to reducing energy costs and promoting sustainability through high-quality installations. They have established themselves as a trusted provider in Hawaii, recognized for their expertise and commitment to customer satisfaction. Notably, they have been awarded the title of Best Solar Company in Hawaii multiple times and have recently been named the 2023 Residential Installer of the Year. Their status as the first Panasonic Elite Installer in Hawaii highlights their focus on quality and innovation in solar technology. The company prides itself on using high-quality materials and maintaining a fully licensed in-house team for all installations, ensuring a seamless experience for their clients.


2. RevoluSun Smart Home

  • Website: revolusun.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2009
  • Headcount: 51-200
  • LinkedIn: revolusun-llc

RevoluSun Smart Home, based in Honolulu, Hawaii, is a private solar energy provider founded in 2009. The company specializes in photovoltaic installations, energy storage solutions, and air conditioning services, catering to both residential and commercial clients. With a workforce of 51-200 employees, RevoluSun has built a reputation for delivering high-quality services tailored to the unique energy needs of its customers. They have successfully installed over 10,000 solar systems, making them the top provider of residential solar and battery storage in Hawaii. Their commitment to sustainability is reflected in their mission to help clients reduce energy costs while transitioning to renewable energy solutions. RevoluSun also offers various financing options and incentives, making solar energy more accessible to homeowners and businesses alike. Their strong local presence and dedication to customer satisfaction position them as a trusted partner in the solar energy industry.


3. Rising Sun Solar

  • Website: risingsunsolar.com
  • Ownership type: Private
  • Headquarters: Kahului, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1986
  • Headcount: 51-200
  • LinkedIn: rising-sun-solar

Rising Sun Solar, based in Kahului, Hawaii, is a private solar energy company that has been operational since 1986. Initially starting as an electrical contractor, the firm transitioned into solar energy solutions, completing its first solar installation in 2003. The company specializes in solar panel installations, solar roofs, and solar battery systems, catering to both residential and commercial customers across multiple Hawaiian islands, including Maui, Kauai, Big Island, and Oahu. Rising Sun Solar prides itself on its customer-centric approach, offering tailored solutions to meet the unique energy needs of its clients. With a strong emphasis on quality, they provide comprehensive warranties on their products and services, ensuring customer satisfaction. The company has garnered a solid reputation, reflected in its numerous five-star reviews and an A+ rating from the Better Business Bureau. Their commitment to promoting renewable energy in Hawaii positions them as a significant player in the local solar market.


4. Haleakala Solar & Roofing

  • Website: haleakalasolar.com
  • Ownership type: Corporate
  • Headquarters: Aiea, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: March 2018
  • Founded year: 1977
  • Headcount: 51-200
  • LinkedIn: haleakala-solar

Haleakala Solar & Roofing, based in Aiea, Hawaii, has been a prominent player in the solar energy industry since its inception in 1977. The company specializes in the installation and maintenance of solar energy systems tailored for both residential and commercial clients. Their product range includes solar photovoltaic (PV) systems, solar hot water systems, and advanced battery storage solutions. This variety allows them to cater to the unique energy needs of their customers, helping them reduce energy costs and transition to sustainable energy sources. Haleakala Solar also emphasizes customer engagement through free consultations and financing options, making solar energy more accessible. Their long-standing experience in the industry and focus on renewable energy solutions underscore their relevance in the solar market.


5. Photonworks Engineering LLP

  • Website: photonworks.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2003
  • Headcount: 51-200
  • LinkedIn: photonworks-engineering-llp

Photonworks Engineering LLP is a renewable energy contractor based in Honolulu, Hawaii, specializing in solar energy solutions since its inception in 2003. The company provides a range of services, including the installation of photovoltaic systems, battery energy storage solutions, and energy efficiency consulting. Photonworks caters to a variety of clients, including residential homeowners, businesses, and government entities, all seeking to reduce energy costs and transition to renewable energy sources. With a commitment to supporting Hawaii's renewable energy goals, Photonworks plays a significant role in the state's efforts to achieve 100% renewable energy generation by 2045. The company has successfully completed numerous projects, demonstrating its capability and expertise in the solar energy sector. Their focus on customer satisfaction is evident through a high rate of referrals and repeat business, underscoring their reputation as a reliable contractor in the industry.


6. Island Pacific Energy


Island Pacific Energy, based in Honolulu, Hawaii, is a private solar energy company that has been operational since 2007. The firm specializes in providing renewable energy solutions through the installation of solar systems for both residential and commercial clients. They also offer battery storage systems, enhancing the efficiency and reliability of solar energy use. Island Pacific Energy is dedicated to helping customers reduce their energy costs and environmental impact. Their approach is tailored to meet the specific energy needs of their clients, ensuring a personalized experience. The company has built a strong reputation for customer satisfaction, boasting a 100% satisfaction rate and a portfolio that includes notable clients such as Hawaiian Electric and various educational institutions. They have received multiple awards for their performance in the solar industry, including recognition as a top solar contractor for eight years running. Their mission aligns with Hawaii's goal of achieving 100% clean energy by 2045, making them a key player in the local renewable energy landscape.


7. Malama Solar

  • Website: malamasolar.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2018
  • Headcount: 51-200
  • LinkedIn: malamasolar

Malama Solar is a privately owned solar energy company based in Honolulu, Hawaii, established in 2018. The firm specializes in solar panel installation and energy storage solutions tailored for residential customers. With a mission to help homeowners reduce their electricity costs through renewable energy, Malama Solar is deeply rooted in the local community. The company actively engages with residents, providing financing options and assistance with solar tax credits to facilitate the transition to solar energy. Their team is composed of local professionals who understand the unique energy needs of Hawaiian households. Malama Solar has garnered a strong reputation for customer service, as evidenced by numerous positive reviews from satisfied clients. They operate primarily on Oahu and the Big Island, focusing on making solar energy accessible and beneficial for the local population.


8. HI Power Solar

  • Website: hipowersolar.com
  • Ownership type: Private
  • Headquarters: Aiea, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2009
  • Headcount: 11-50
  • LinkedIn: hi-power-solar

HI Power Solar, established in 2009, is a private company located in Aiea, Hawaii. With a team of 19 employees, the company specializes in providing solar energy solutions tailored to the unique needs of homeowners and businesses in Hawaii. Their offerings include photovoltaic systems, solar hot water systems, and battery storage solutions, all aimed at reducing energy costs and enhancing efficiency. In addition to solar services, HI Power Solar also provides air conditioning services, showcasing their commitment to comprehensive energy solutions. The company prides itself on superior customer service and has built a reputation for quality work over its years of operation. With a focus on helping Hawaii achieve its clean energy goals, HI Power Solar is actively contributing to the state's renewable energy landscape.


9. ProVision Solar

  • Website: provisionsolar.com
  • Ownership type: Private
  • Headquarters: Hilo, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1998
  • Headcount: 11-50
  • LinkedIn: provisionsolar

ProVision Solar, based in Hilo, Hawaii, has been a prominent player in the solar energy industry since its founding in 1998. The company specializes in the installation of solar panels and energy storage systems, catering to residential, commercial, and non-profit clients. With a workforce of approximately 27 employees, ProVision Solar prides itself on delivering customized solar solutions that help customers reduce energy costs and embrace renewable energy. Their extensive experience, spanning over 25 years, allows them to provide expert guidance on navigating the complexities of solar energy regulations and incentives specific to Hawaii. ProVision Solar is dedicated to promoting sustainable energy practices and enhancing property value through their high-quality installations. They also offer services such as solar panel removal and reinstallation, system check-ups, and financing options, making them a comprehensive provider in the solar market.


10. Sunspear Energy

  • Website: sunspearenergy.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2017
  • Headcount: 11-50
  • LinkedIn: sunspear-energy

Sunspear Energy is a private solar energy provider based in Honolulu, Hawaii, founded in 2017. The company specializes in renewable energy solutions tailored for both residential and commercial clients. Their offerings include solar panel installation, battery storage solutions, and financing options, all aimed at helping customers reduce energy costs and transition to sustainable energy sources. Sunspear Energy has installed over 60,000 solar panels and generated more than 22 megawatts of solar power through various projects. Their team consists of NABCEP certified installers, ensuring high-quality service. The company is dedicated to supporting Hawaii's goal of achieving 100% renewable energy, and they actively engage in community initiatives to promote clean energy. Their projects include significant installations at the Honolulu International Airport and educational campuses, showcasing their capability and commitment to the solar industry.


11. Neighborhood Power Corporation


Neighborhood Power Corporation, based in Kahului, Hawaii, is a private renewable energy company that specializes in solar energy solutions. Established in 2009, the company aims to make solar power accessible to a wide range of customers, including businesses, consumers, and organizations. They offer services such as community solar, roof leasing, and energy savings proposals. Neighborhood Power operates as a micro utility, producing renewable energy where it is consumed, and focuses on providing clean power at costs equal to or lower than traditional grid-sourced electricity. Their projects are designed to deliver long-term savings through power purchase agreements, allowing clients to benefit from renewable energy without any upfront investment. The company has a strong commitment to sustainability and aims to alleviate the environmental impact of energy production by promoting solar energy adoption.


12. Inter-Island Solar Supply

  • Website: solarsupply.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1975
  • Headcount: 51-200
  • LinkedIn: inter-island-solar-supply

Inter-Island Solar Supply, based in Honolulu, Hawaii, is a private company that specializes in renewable energy solutions, particularly solar energy and plumbing products. Established in 1975, it has become one of the oldest and most experienced renewable energy equipment distributors in the world. The company caters to a wide array of clients, including contractors and builders, providing high-quality equipment and expert support to facilitate the shift towards clean energy. With five branch locations across the Hawaiian Islands, Inter-Island Solar Supply serves over 650 wholesale customers, showcasing its extensive reach and local knowledge. The company prides itself on its strong relationships with manufacturers and its commitment to offering top-tier products. Their team boasts over 300 years of combined experience in the solar industry, which enhances their ability to meet the needs of their customers effectively. Inter-Island Solar Supply is recognized for its role in helping to reduce Hawaii's reliance on fossil fuels, aligning with broader environmental goals.


13. Energy Industries Corporation

  • Website: energy-industries.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1994
  • Headcount: 51-200
  • LinkedIn: energy-industries

Energy Industries Corporation, founded in 1994 and based in Honolulu, Hawaii, is a private energy efficiency provider specializing in lighting and solar energy solutions. With a workforce of approximately 41 employees, the company serves a variety of clients, including businesses and organizations, by offering services designed to reduce energy consumption and costs. Their Solar Division is particularly noteworthy, as it focuses on the installation of solar photovoltaic (PV) systems, catering to both commercial and residential markets. This division underscores their commitment to renewable energy, making them a significant contributor to Hawaii's clean energy initiatives. Energy Industries has built a reputation for delivering comprehensive energy solutions, combining their expertise in solar and lighting to maximize energy savings for their clients.


14. Holu Hou Energy

  • Website: holuhou.com
  • Ownership type: Private
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: $35.0M, March 2024
  • Founded year: 2019
  • Headcount: 11-50
  • LinkedIn: holu-hou-energy

Holu Hou Energy, based in Honolulu, Hawaii, is a private company founded in 2019 that specializes in solar energy solutions. The firm offers a range of products, including advanced solar energy storage systems and energy management technologies. Their primary clientele includes homeowners and businesses looking to cut energy costs and achieve greater energy independence. Holu Hou Energy operates mainly in Hawaii, a region with unique energy challenges, and is expanding its reach to the mainland USA. The company has developed the HoluPower xP Energy Storage System, which allows for energy sharing among multiple residential or commercial units, enhancing efficiency and resilience. In March 2024, Holu Hou Energy secured $35 million in funding, reflecting strong investor interest and confidence in their innovative solutions and growth potential in the solar energy market.


15. Blue Planet Energy

  • Website: blueplanetenergy.com
  • Ownership type: Venture Capital
  • Headquarters: Honolulu, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Seed, January 2019
  • Founded year: 2015
  • Headcount: 11-50
  • LinkedIn: blueplanetenergy

Blue Planet Energy, founded in 2015 and based in Honolulu, Hawaii, is an energy storage company dedicated to providing innovative solutions for homes, businesses, and communities. Their flagship products, including the Blue Ion series, are designed to enhance energy independence and reliability, especially in regions with limited access to traditional power sources. The company is committed to renewable energy technologies and aims to eliminate dependence on fossil fuels. Blue Planet Energy has made significant strides in the energy storage market, particularly in the context of integrating with solar energy systems. Their systems have been deployed in various projects, including microgrids that support critical infrastructure in remote areas. The company has also been recognized for its contributions to energy storage, receiving accolades such as Solar Builder Magazine’s Microgrid Project of the Year for their work in Alaska. With a focus on sustainability and community impact, Blue Planet Energy continues to play a vital role in the transition to cleaner energy solutions.


16. Hawai'i Unified

  • Website: hawaiiunified.com
  • Ownership type: Private
  • Headquarters: Waianae, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2007
  • Headcount: 51-200
  • LinkedIn: hawaii-unified

Hawai'i Unified, founded in 2007 and based in Waianae, Hawaii, operates as a private construction and energy solutions provider. The company specializes in facility maintenance, solar energy projects, and various construction services. With a workforce of approximately 71 employees, all based in Hawaii, they emphasize local expertise and self-performing trades to ensure high-quality service delivery. Hawai'i Unified is particularly focused on solar energy, acting as a project developer and EPC contractor for commercial, industrial, and small utility-scale solar installations. Their commitment to sustainability is evident in their support for Hawaii's 100% clean energy initiative, and they offer a range of services including photovoltaic technology, battery energy storage systems, and microgrid solutions. The company aims to create a positive social impact while providing innovative energy solutions to their clients.


17. American Electric Company, LLC

  • Website: americanelectric.com
  • Ownership type: Corporate
  • Headquarters: Mililani, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: May 2020
  • Founded year: 1946
  • Headcount: 51-200
  • LinkedIn: americanelectriccohi

American Electric Company, LLC, based in Mililani, Hawaii, has been a prominent electrical contractor since its founding in 1946. With a workforce of approximately 70 employees, the company provides a wide array of electrical services, including construction, maintenance, and alternative energy solutions. Their expertise extends to residential, commercial, and industrial clients, ensuring safe and efficient electrical systems. Notably, American Electric has a dedicated division for alternative energy, specializing in the design and installation of solar energy systems. They utilize high-quality solar panels and advanced technology to create efficient systems tailored to client needs. Additionally, they offer maintenance and repair services to ensure the longevity and performance of these solar installations. Their commitment to clean energy is evident in their efforts to help Hawaii achieve its goal of 70% clean energy use by 2030.


18. Kapili Solar Roofing & Painting dba Kapili Construction, LLC.


Kapili Solar Roofing & Painting dba Kapili Construction, LLC. is a family-owned business based in Waipahu, Hawaii, established in 2007. The company specializes in roofing, painting, and solar energy solutions, serving both residential and commercial clients across the Hawaiian Islands. With a dedicated team, Kapili aims to enhance property value and energy efficiency through its comprehensive services. Their solar division focuses on providing tailored solar panel installations and maintenance, addressing the unique energy needs of Hawaii's communities. The company prides itself on its commitment to quality workmanship and customer satisfaction, ensuring that each project is handled with care and professionalism. Kapili's involvement in the solar industry reflects a growing trend towards renewable energy in Hawaii, where the demand for sustainable energy solutions continues to rise.


19. Alpha Inc. Hawaii

  • Website: alphahawaii.com
  • Ownership type: Family Owned
  • Headquarters: Kahului, Hawaii, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2007
  • Headcount: 201-500
  • LinkedIn: alpha-inc-hawaii

Alpha Inc. Hawaii, founded in 2007 and based in Kahului, Hawaii, is a family-owned construction firm specializing in heavy civil construction, water well drilling, and renewable energy solutions. The company has established a strong reputation for quality and customer service, serving various businesses and organizations across Hawaii. Alpha Inc. is committed to sustainability and environmentally responsible practices, which is evident in their focus on renewable energy projects. They provide a range of services, including the development of solar farms and solar plus battery storage systems, showcasing their involvement in the renewable energy sector. The company emphasizes innovation and the use of cutting-edge technology to enhance the efficiency and quality of their services. With a dedicated team and a commitment to community engagement, Alpha Inc. aims to make a positive impact on Hawaii's infrastructure and energy landscape.



Solar Energy Insights: Key Companies in Hawaii


CompanyHeadquarterSizeFoundedOwnership
Alternate Energy Inc.Honolulu, Hawaii, United States (USA)51-2001993Private
RevoluSun Smart HomeHonolulu, Hawaii, United States (USA)51-2002009Private
Rising Sun SolarKahului, Hawaii, United States (USA)51-2001986Private
Haleakala Solar & RoofingAiea, Hawaii, United States (USA)51-2001977Corporate
Photonworks Engineering LLPHonolulu, Hawaii, United States (USA)51-2002003Private
Island Pacific EnergyHonolulu, Hawaii, United States (USA)11-502007Private
Malama SolarHonolulu, Hawaii, United States (USA)51-2002018Private
HI Power SolarAiea, Hawaii, United States (USA)11-502009Private
ProVision SolarHilo, Hawaii, United States (USA)11-501998Private
Sunspear EnergyHonolulu, Hawaii, United States (USA)11-502017Private
Neighborhood Power CorporationKahului, Hawaii, United States (USA)11-502009Private
Inter-Island Solar SupplyHonolulu, Hawaii, United States (USA)51-2001975Private
Energy Industries CorporationHonolulu, Hawaii, United States (USA)51-2001994Private
Holu Hou EnergyHonolulu, Hawaii, United States (USA)11-502019Private
Blue Planet EnergyHonolulu, Hawaii, United States (USA)11-502015Venture Capital
Hawai'i UnifiedWaianae, Hawaii, United States (USA)51-2002007Private
American Electric Company, LLCMililani, Hawaii, United States (USA)51-2001946Corporate
Kapili Solar Roofing & Painting dba Kapili Construction, LLC.Waipahu, Hawaii, United States (USA)51-2002007Family Owned
Alpha Inc. HawaiiKahului, Hawaii, United States (USA)201-5002007Family Owned


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