Top Energy Companies in Philadelphia, PA (37)
WM is North America's leading provider of integrated environmental solutions. We partner with our customers and communities to manage and reduce waste from collection to disposal while recovering valuable resources and creating clean, renewable energy. We are on a quest for environmental performance, a mission to maximize resource value, while minimizing – and even eliminating – environmental impact so that...
Vanderweil is a mechanical, electrical, plumbing, fire protection, technology, sustainability, commissioning, and power engineering firm dedicated to providing customized and innovative engineering solutions through excellent client service. We have designed MEP/FP systems for buildings of all types and sizes, as well as cogeneration plants up to 50 MW, chilled water plants up to 100,000 tons, hundreds of miles of transmission...
Navigate Power is a leading energy broker and consulting firm that helps businesses reduce energy costs through expert procurement, efficiency solutions, and utility audits.
ConnectDER (www.ConnectDER.com) represents the next generation in US-based resource technology product development. Our signature product, the ConnectDER Meter Socket Adapter, dramatically cuts down the cost and interconnection time for solar energy, EV charging, and home battery storage, putting clean, resilient power within reach of millions of homeowners. With a pipeline of exciting innovations, we’re only just getting started on our...
Reworld is a leading sustainable waste solutions company dedicated to helping businesses and communities thrive. Formerly Covanta, it specializes in converting waste into renewable electricity and valuable resources through advanced technologies. Operating over 90 facilities in North America, Reworld provides comprehensive industrial material management and waste-to-energy services, focusing on advancing zero-waste initiatives and supporting long-term sustainability goals globally.
Bell Supply Company is a leading national independent supplier of pipe, valves, fittings, and other materials serving all sectors of the energy industry. Since 1945, they have provided standard and specialty products to support the production, gathering, processing, and transmission segments of the market, emphasizing a commitment to customer service and value through a comprehensive line of MRO-related products.
PJM Interconnection manages the high-voltage electric system that provides power to 65 million people in all or parts of 13 states and the District of Columbia. It's the largest power grid in North America. As a neutral, independent party, PJM administers a competitive wholesale electricity market. PJM’s long-term regional planning process provides a broad, interstate perspective that identifies the most effective...
Tioga Pipe, Inc. is a leading global supplier of mission-critical materials, specializing in high-energy pipe, tubing, fittings, and flanges. The company provides specialty metal products for complex projects in industries such as global and nuclear power generation, oil refining, gas and chemical processing, and U.S. military shipbuilding, emphasizing quality assurance and reliable project management.
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ERM (Environmental Resources Management) is a global sustainability consultancy that helps organizations navigate environmental, social, and governance (ESG) challenges. ERM provides advisory and technical services across sectors—energy, mining, infrastructure, manufacturing and finance—supporting decarbonization, regulatory compliance, risk management, and sustainability strategy and implementation through technical, engineering and strategic consulting worldwide.
Carollo Engineers is the largest firm in the United States dedicated solely to water related engineering--it's all we do. Since 1933, this single-minded focus has allowed us to make some unique commitments to both clients and staff. It has opened the door to the very best talent in the water industry, innovative water solutions, unparalleled client service, and above all, a...
Inspire is a clean energy technology company on a mission to transform the way people access clean energy and accelerate the world toward a net-zero carbon future. Through a subscription model, Inspire allows customers to access 100% clean energy for one flat monthly price. Customers enjoy a seamless billing experience while supporting a more sustainable future.
Customized Energy Solutions is at the forefront of competitive energy markets. Established in 1998, CES was created to assist clients in managing the changes in the wholesale and retail electric markets. As the industry restructured, many participants recognized the value of creating sound market rules and staying abreast of market changes. Thus, Customized Energy Solutions was created to address the...
CLEAResult Consulting, Inc. is a company based out of 4301 WESTBANK DR, Austin, Texas, United States.
CLEAResult Consulting, Inc.'s Top Stability & Growth Strengths
Strong Market Position & Advantage: CLEAResult is repeatedly characterized as North America’s largest implementer with marquee wins like Energy Trust of Oregon’s New Buildings and peer-recognized delivery (e.g., ACEEE mentions). Multiple sources cite a very large active program portfolio and workforce across most U.S. states and parts of Canada.
Strong Revenue Growth: Company materials report double‑digit business growth in 2023 alongside rising program impact metrics. Headcount indications into 2025 suggest modest continued expansion following that growth year.
Market Expansion: Recent moves include a new Chicago‑area office (2026) and a dedicated Québec subsidiary (2025), plus competitive awards and partnerships in adjacent services like EV and incentive‑data collaborations. Acquisition activity (e.g., Energetics in 2024) broadens capabilities and reach in utility and government markets.
Holtec International is a global turnkey supplier of equipment and services for the Nuclear, Solar, Geothermal, and Fossil Power Generation sectors of the energy and petrochemical industry. As a fully integrated supplier, Holtec possesses in-house capabilities to design, engineer, analyze, construct, license, and deploy the technologies offered by the company; this includes technologies to manage used nuclear fuel and waste...
Holtec International's Top Stability & Growth Strengths
Strong Market Position & Advantage: Evidence indicates Holtec leads in spent‑fuel dry storage and has a prominent U.S. decommissioning and restart role, underscored by the Palisades project. Its widely deployed HI‑STORM/HI‑STAR systems and multi‑site decommissioning portfolio signal entrenched advantage in core niches.
Investor Backing & Capital Strength: The $1.52B DOE loan guarantee for the Palisades restart with ongoing 2025 disbursements and a long‑term PPA demonstrate substantial institutional support. Reports of an anticipated IPO further indicate access to capital for expansion.
Future-Ready Strategy: The SMR‑300 program’s Mission 2030, NRC pre‑application engagement, and the January 2026 Part 1 construction permit filing at Palisades show momentum toward next‑generation buildout. Partnerships with Hyundai E&C and siting initiatives in Michigan and the Mountain West reinforce pipeline development.
Qualus is a leading provider of specialized engineering and technical field services. We play a vital role in the modernization of the electric power infrastructure, decarbonization of the economy, and the broader energy transition. Our team of highly skilled technical professionals provides high quality end-to-end services to clients across the U.S.
Northeast-Western Energy Systems ("NES-WES") provide reliable, best in class, Integrated Firm-Hybrid low carbon on site power-thermal solutions from 300 kW- 20 MW. INNIO Jenbacher's largest authorized Sales and Service partner in the United States. Cummins Generator Technologies Sales and Service partner; Newage, Stamford, AVK; Q8 Lube oils and fluids; HUG Engineering SCR, Oxidation Catalyst, and Codinox Sales and Service Partner NES-WES...
AgileSwitch is addressing the increasing demand of renewable, high-efficiency energy applications.
Spor is a paradigm shift in personal power generation. We manufacture solar powered battery chargers and accessories to disconnect consumers from the grid and connect them to their mobile devices. Our central product; the SPOR charger is designed to be simple, reliable and modular. We also sell unique USB charging cables, adapters, and solar panels. Our team at SPOR believes...
NRG is one of the leading integrated power companies in the U.S, powered by people and built on dynamic retail brands with diverse generation resources. Our purpose is to create a sustainable energy future by bringing the power of energy to people and organizations. A Fortune 500 company, NRG creates value through best-in-class operations, reliable and efficient electric generation, and...
NRG Energy's Top Stability & Growth Strengths
Strong Market Position & Advantage: NRG is characterized as the largest U.S. competitive retail power provider with a dominant Texas/ERCOT presence and a multi-brand platform across the U.S. and Canada. Its retail leadership is reinforced by brands such as Reliant, Direct Energy, and Green Mountain and by consolidation of additional ERCOT customer accounts.
Market Expansion: The company roughly doubled its generation fleet to about 25 GW via the LS Power acquisition and is advancing new gas projects and long-term data-center power agreements. The Vivint acquisition and expanding VPP/DER capabilities further extend reach into adjacent home and commercial services.
Healthy Cash Flow: The company delivered about $2.1 billion of Free Cash Flow before Growth in 2024 and guides to $2.8–$3.3 billion in 2026. Dividend increases for six consecutive years and ongoing share repurchases indicate capacity to fund growth while returning capital.

































