Top Renewable Energy Companies (1,255)

A global leader in applied safety science, UL Solutions transforms safety, security and sustainability challenges into opportunities for customers in more than 100 countries. UL Solutions delivers testing, inspection and certification services, together with software products and advisory offerings, that support our customers’ product innovation and business growth. The UL Certification Marks serve as a recognized symbol of trust in...

Concord Energy Strategies, LLC is a boutique consulting firm that partners with public- and private-sector clients to unlock federal clean-energy incentives. By combining compliance expertise with their proprietary technology platform, Concord Caisson, they streamline data and stakeholder engagement across the clean energy and energy efficiency landscape, providing professional tax services to accelerate the energy transition and power sustainable progress.

OPAL Fuels Inc. (Nasdaq: OPAL) is a leading vertically integrated renewable fuels platform involved in the production and distribution of renewable natural gas (RNG) for the heavy-duty truck market. OPAL Fuels captures harmful methane emissions at the source and recycles the trapped energy from those emissions into usable, low-carbon intensity energy products such as renewable natural gas (RNC) or renewable...

Zap Energy is an integrated nuclear energy company focused on commercializing both fission and fusion power. The company is developing compact-scale, liquid-metal-cooled modular energy systems and advanced fusion power systems that operate without magnets. Its mission is to provide a sustainable, clean, and carbon-free energy source to address the global energy crisis across industrial, commercial, and residential markets.

3MG Roofing & Solar is a licensed and insured contractor serving Florida, Georgia, Missouri, and Kansas. It provides residential, commercial, multifamily, tile, gutter, and solar roofing services, including roof installations, replacements, repairs, and storm-damage restoration. The company also assists customers with insurance claims and offers integrated solar roofing systems such as GAF Timberline Solar shingles, which generate electricity. It serves...

Piq Energy helps renewable and load developers connect to the grid faster. Piq automates the detailed technical analysis required to site, size, and interconnect large scale infrastructure like solar + storage projects and datacenters.

Freedom Solar Power is a leading full-service solar installation company providing turnkey solar solutions for residential and commercial markets. Based in Austin, Texas, they offer end-to-end services including site evaluation, design, permitting, financing, and installation of solar panels, backup battery storage, and EV charging stations across states such as Texas, Florida, Colorado, Virginia, and North Carolina.

Launched by the Abu Dhabi leadership in 2006 with a mandate to advance renewable energy through education, R&D, investment and commercialization, Masdar is securing the emirate’s continued leadership in the evolving global energy market.

TAR is an energy-infrastructure company building off‑grid power plants for data centers powered by renewable technologies. It designs, manufactures, deploys and operates vertically integrated, GW‑scale off‑grid energy assets (hardware and software) to deliver fast, clean, scalable power for AI and large compute customers. TAR emphasizes end‑to‑end integration to accelerate multi‑GW deployments.

The Crown Estate is an independent commercial business created by Act of Parliament that manages a diverse portfolio of UK land, urban centres, and the seabed. Its mission is to create lasting and shared prosperity for the nation by supporting the UK's transition to a low-carbon, energy-secure future, protecting and restoring nature, and contributing to inclusive growth through improved access...

ON.energy is building the backbone of energy and AI infrastructure, powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges, delivering custom solutions for AI data centers, mission-critical facilities, and front-of-the-meter assets. Its track record spans industrial, manufacturing, infrastructure, transportation, and grid-scale storage. With patented technology and proprietary software,...

Mexens is an independent French multi-energy group that develops, finances, builds and operates renewable energy infrastructure. Its activities include solar photovoltaics, energy storage, onshore wind and biogas. Operating in France and international markets, the company manages 0.9 GW of renewable assets and aims to exceed 4 GW by 2030, while supporting sustainable local development and connecting communities with renewable energy.

Primo Marine is an independent specialist in subsea cabling and pipeline engineering, providing technical, contractual, and commercial guidance for major subsea power cable projects. They focus on sustainable energy connections, including interconnectors, export systems, and offshore wind farms, blending academic expertise with extensive field experience to deliver smart solutions for the global energy supply's greenification.

Founded in 2009, Sol-Up is a solar engineering and installation company providing end-to-end residential and commercial energy solutions. They specialize in the design, permitting, and installation of high-performance solar panels and battery storage systems, utilizing advanced heterojunction technology. Beyond solar, Sol-Up offers energy-efficient home upgrades, including smart electrical panels and HVAC systems, to help clients optimize overall energy performance and...

Kwest Group is an employee-owned civil and environmental construction company serving clients across the United States and the Caribbean. They provide full-scope infrastructure and site development services, including industrial site work, roadway and runway construction, earthwork, underground utilities, substations, structural concrete, and rail improvements, with a steadfast commitment to safety, quality, and customer service.

The Sierra Club is the largest and most influential grassroots environmental organization in the United States. For over 130 years, it has worked to promote clean energy, safeguard community health, protect wildlife, and preserve wild places. Through grassroots activism, public education, lobbying, and legal action, the organization mobilizes millions of members and supporters to defend the right to a healthy...

The RISE Group, Inc. is a 100% employee-owned multidisciplinary professional services firm headquartered in Cranston, Rhode Island. It specializes in providing integrated solutions across energy, engineering, mechanical, electrical, weatherization, and plumbing to enhance building performance and energy efficiency. The company is dedicated to combating climate change and improving power grid reliability through innovative energy-efficiency services and technical expertise.

Facility Innovations Group is a provider of all-inclusive energy solutions for commercial and industrial facilities. It helps customers pursue decarbonization, sustainability, and energy-efficiency goals through customized project development and implementation. Its work includes solar and other distributed generation, microgrids with batteries and generators, energy-efficiency measures such as MEP, lighting, and building automation, plus carbon-reduction strategies designed to reduce operating costs...

Feldwerke is a Munich-based CleanTech startup founded in 2023 that develops and installs utility-scale Agri-Photovoltaic (Agri-PV) systems and battery energy storage systems (BESS). The company focuses on integrating agricultural production with renewable energy infrastructure, allowing energy generation and active farming to coexist on the same land. Their goal is to drive the expansion of renewable energy to ensure a sustainable...

Redshaw Advisors is a leading carbon advisory firm specializing in carbon risk management and procurement. They provide expert market intelligence, strategic advice, and specialist procurement support to help organizations navigate global carbon markets with clarity. The firm assists companies in understanding and hedging their direct and indirect carbon risk exposure, ensuring they can manage environmental market requirements and buy carbon...