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Solar Turbines Incorporated manufactures industrial gas turbines and turbomachinery packages for power generation and mechanical-drive compression. Headquartered in San Diego, the company reports more than 17,000 gas turbines sold across over 100 countries, with service available for every unit. Its operations also include equipment lifecycle services and digital monitoring for customer facilities.
SolareAmerica designs, installs and monitors commercial and municipal solar systems, with a distinctive specialty in its patented SolarMax parking-canopy technology. Based in the Mid-Atlantic, the company has more than 15 years of experience, over 50 MW installed and more than 300 commercial installations, including a 150-plus-location solar rollout for Wawa. It also builds turnkey fiber-optic infrastructure, having constructed hundreds of miles of communication lines.
Founded in 2019, Solarflux Energy Technologies develops the FOCUS, a patented parabolic-dish concentrator that turns direct sunlight into clean thermal energy. Based in Reading, Pennsylvania, the company focuses on making solar heat practical for underserved and remote settings, with a design built for autonomous operation and limited maintenance. Solarflux has field-tested the FOCUS with Penn State and Lehigh University and continues to refine the technology for applications ranging from industrial heat to water treatment.
For more than 41 years, Solcon Solutions has built its reputation around helping demanding industrial operations start and protect large electric motors. Based at its North American headquarters in Monroeville, the company serves customers in fields such as mining and marine work through Solcon IGEL equipment, backed by engineering and field support.
With roots stretching back more than a century, Solenis develops specialty chemicals, digital systems and expert services for water treatment, process improvement and hygiene. The company supports operations ranging from pulp and paper mills to food processors and biorefineries, where its solutions help manage water, improve production and meet sanitation demands. Solenis operates globally with more than 23,000 employees and 78 manufacturing facilities across more than 160 countries.
Known for more than 50 years of responsive, U.S.-based work, Solenoid Solutions, Inc. partners directly with OEMs to develop valves tailored to their equipment rather than pushing stock solutions. The Erie, Pennsylvania manufacturer provides made-to-order solenoid valves with engineering support for applications where standard components do not fit.
With a collective history of more than 100 years, Solestra Group unites specialized manufacturing businesses serving demanding aerospace and defense programs across three North American hubs. The group has grown to more than 360 employees at six sites, supporting customers from new product development through production and sustainment, with AERO Engineering carrying more than 75 years of experience in mission-critical aircraft spares.
For more than 30 years, Solid Technologies has been a Mid-Atlantic resource for businesses adopting industrial 3D printing. It works with manufacturers, engineers, and product designers as an authorized sales and service center, providing practical guidance and hands-on support from system selection through ongoing maintenance.
Founded by Paul and Russell Solt in 1956, Solt's Sawmill is a wholesale Pennsylvania sawmill that turns privately harvested timber into lumber and manufactures specialty-sized pallets. The family business is now run by Paul’s granddaughter Prudence and her husband Jeremy, with about 20 full- and part-time employees. After a 2009 fire destroyed the pallet shop, the company rebuilt and continued its sawmill and pallet operations.
Soltech Solutions LLC designs indoor LED grow lights that help houseplants thrive while fitting naturally into home décor. Founded by Michael Planer, Paul Hodges, and Chris Clark to promote sustainable indoor farming, the company developed the Aspect, which it describes as the first LED grow light to blend plant-growing performance with residential design. The privately owned small business designs its products in Bethlehem, Pennsylvania and works with global manufacturing partners to produce them.
Founded by Dennis Derr in 2000, Solutionwerks is an Allentown, Pennsylvania-based global supplier of equipment and technical services for producing, storing, and using industrial gases. Its engineers and technical specialists work across both cryogenic and non-cryogenic facilities, helping customers maintain aging plants, execute upgrades, and install anything from replacement parts to turnkey systems. The company also partners with Penn State on student design projects focused on engineering improvements for the industry.
From its Lancaster, Pennsylvania base, Somat Company engineers and manufactures foodservice waste-management systems that reduce and dewater organic waste. The company traces its roots to Kurt Wandel’s 1940s pulping inventions and was established as Somat Corporation in 1962; today it serves high-volume operations around the world as part of the ITW Food Equipment Group. Somat equipment is used across every surface ship in the U.S. Naval Fleet, an unusual measure of its reach and operating experience.
Somerset Door & Column manufactures custom doors and architectural columns in Somerset, Pennsylvania, and says it has operated since 1906. Its craftsmen fabricate wood components on-site, producing custom work and historical reproductions for architects, construction companies, homeowners, and commercial customers.
Founded in Pennsylvania in 1957 by Sidney Riggs and Warren Mostoller with a $500 loan, Somerset Steel Erection Company is a third-generation Riggs Industries business built around more than six decades of industrial construction experience. The company provides turnkey project work for industrial clients, with particular experience in demanding power, steel, and manufacturing environments.
Established in 1958, family-owned Somerset Welding & Steel grew from building steel dump bodies for coal haulers and farmers into a Somerset, Pennsylvania manufacturer of custom welded, fabricated and machined equipment. Its three facilities total more than 342,000 square feet and employ over 250 people, supporting demanding projects such as mine safety chambers and bulk sand conveyors. The company operates independently and maintains ISO 9001:2015 certification.
Known for more than 50 years of work in animal anesthesia and pre-clinical research, Somni Scientific develops equipment that helps veterinary and research teams deliver inhalant anesthesia accurately. The MacMurray, Pennsylvania company also supports that equipment through depot and on-site service, with a particular focus on reducing hazardous waste gas.
Based in Lucens, Switzerland, SONATEC develops and assembles salt-free water-treatment equipment, including its NATEC devices, through a precision-mechanics workshop operated by Sergio Silva. The company says its system emerged from 10 years of study at EPFL and 45 years of continuing development, using magneto-hydro-dynamic technology without electricity or chemicals. SONATEC’s equipment is offered for homes and industry and carries a 10-year warranty.
Founded in Bladensburg, Maryland, in 1976, Sonco Pipe & Tube supplies commercial-quality and galvanized steel tubing to manufacturers and metal distributors. Its specialty is triple-coated in-line galvanized tubing, supported by cut-to-size and finishing services that can turn stock into ready-to-use material. With warehouse operations in Bristol, Pennsylvania, Sonco also offers just-in-time delivery and serves customers across the Mid-Atlantic, Northeast, and Eastern Seaboard.
In Bucks County, Pennsylvania, Sonic Systems designs and manufactures ultrasonic cleaning equipment alongside custom metal-fabricated products, all in-house and made in the United States. Incorporated in 1983, the company traces its lineage to the late 1960s and has built its work around medical-grade equipment for settings ranging from hospitals to aerospace and industrial operations. Its quality system includes FDA registration, ISO 13485:2016, UL 61010-1 and CSA C22.2 No. 61010-1 certification.
Founded in 1904, Sonneborn manufactures high-purity specialty hydrocarbons and related ingredients for formulations used around the world. The company became the first U.S. white oil manufacturer in 1916 and now operates production facilities in Petrolia, Pennsylvania, and Amsterdam, supporting both standard and customized solutions. Sonneborn’s Petrolia facility has held ISO 9001 certification since 1992 and achieved ISO 14001 certification in 2024.