Business Description

Overview Powell Industries, Inc. is a Delaware corporation founded by William E. Powell in 1947. We develop, design, manufacture and service custom-engineered equipment and systems that distribute, control and monitor the flow of electrical energy and provide protection to motors, transformers and other electrically powered equipment. Our major subsidiaries, all of which are wholly owned, include Powell Electrical Systems, Inc.; Powell Canada, Inc.; Powell (UK) Limited; and Powell Industries International Limited. We are headquartered in Houston, Texas and primarily serve the oil and gas and petrochemical markets, the electric utility market, and commercial and other industrial markets. Beyond these major markets, we also provide products and services to the light rail traction power market and other markets that include universities and government entities. We are continuously developing new channels to electrical markets through original equipment manufacturers and distribution market channels. Our website is powellind.com . We make available, free of charge on or through our website, electronic copies of our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports, filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as is reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Additionally, all of our reports filed with the SEC are available via their website at sec.gov . References to Fiscal 2025, Fiscal 2024 and Fiscal 2023 used throughout this Annual Report relate to our fiscal years ended September 30, 2025, 2024 and 2023, respectively. Recent Developments Business Acquisition On August 15, 2025, we completed the previously announced business acquisition of Remsdaq Limited (Remsdaq), a U.K.-based manufacturer of Supervisory Control and Data Acquisition (SCADA) Remote Terminal Units (RTUs) for electrical substation control and automation in generation, transmission and distribution, for a total consideration of £13.6 million Pounds Sterling, or $18.4 million, including cash acquired. See Note P. Business Acquisition of the Notes to Consolidated Financial Statements for additional information. Houston Electrical Products Manufacturing Facility Expansion In Fiscal 2025, we completed the expansion and improvement project at our electrical products facility in Houston, Texas, and the incremental capacity has been placed into service. Production Capacity Expansion at Jacintoport Manufacturing Facility In August 2025, we announced a $12.4 million investment to expand production capacity at our Jacintoport manufacturing facility in Houston, Texas. The investment will add an incremental 335,000 square feet of productive capacity for Power Control Room laydown area, a 62% increase from the current yard capacity. The investment will also double the length of the existing shoreline bulkhead to 1,150 feet to support increased schedule flexibility and multiple ship lanes for the varied needs and project timelines of our customers. The incremental capacity is initially expected to support the Company’s oil and gas customers but can be utilized to support each of our market sectors. Construction is expected to begin during the first quarter of Fiscal 2026 and is expected to be completed in the second half of Fiscal 2026. Products and Services Our principal products include integrated power control room substations (PCRs ® ), custom-engineered modules, electrical houses (E-Houses), traditional and arc-resistant distribution switchgear and control gear, medium-voltage circuit breakers, monitoring and control communications systems, motor control centers, switches and bus duct systems. These products are designed for application voltages ranging from 480 volts to 38,000 volts. Our product scope includes designs tested to meet both United States (U.S.) and international standards, under both the American National Standards Institute (ANSI) and International Electrotechnical Commission (IEC). We also provide spare parts, retrofit and retrofill components for existing systems, and replacement circuit breakers for obsolete switchgear no longer produced by the original manufacturer.…