Doble Engineering Company

Doble Engineering Company, doing business as Doble Co, is a subsidiary of Esco Technologies Inc. that manufactures and leases diagnostic testing equipment and software for the electric power industry, operating as a prime contractor on 99% of its federal awards. The company competes predominantly full-and-open, with no SBA set-aside designations across most of its prime footprint, though two Total Small Business awards appear in the recent record. Doble is headquartered in Marlborough, Massachusetts, with primary NAICS codes spanning instrument manufacturing for measuring and testing electricity (173 awards), equipment rental and leasing (40 awards), and testing laboratory services (39 awards).

Doble's federal work centers on transformer diagnostic testing, oil sample analysis, equipment leasing, relay test set maintenance, and specialized electrical testing services. Representative prime work includes a $2.52 million total small business transformer testing lease and service contract with the Bureau of Reclamation through September 2029 covering thirteen dielectric power-factor test sets and related equipment for Denver operations; a $1.7 million firm fixed-price equipment rental arrangement with the U.S. Army Corps of Engineers Portland District exercising Option Year 3 through January 2028 for electrical testing equipment supporting the Hydropower Test and Evaluation Program across five Northwest Division districts; a $2.4 million Bureau of Reclamation delivery order for dissolved gas analysis monitors, temperature probes, and isolation valve kits completed in 2023; and a $693,970 single-award indefinite delivery vehicle with the Western Area Power Administration for oil sample analysis and transformer testing services across Rocky Mountain, Sierra Nevada, and Upper Great Plains regions, which has generated multiple firm fixed-price delivery orders ranging from $20,000 to $42,000 through September 2026. Recent smaller awards include a $303,592 Bureau of Reclamation purchase order for Relay Testing Software platform renewal and maintenance through March 2031, a $65,974 Naval Sea Systems Command calibration order for three Phenix Motor Test Sets at Norfolk Naval Shipyard extending to September 2030, and a $69,880 total small business award from the U.S. Army Corps of Engineers for two Phenix electrical testing systems supporting the Prime Power School at Fort Leonard Wood, Missouri.

Customer concentration aligns heavily with federal power infrastructure and water resource agencies. The top five customers by award count and potential value account for 56% and 88% of awards respectively, led by the Western Area Power Administration (88 awards, $16.9 million combined potential value), the Bureau of Reclamation (55 awards, $18 million), and the Army Corps of Engineers (57 awards, $2.9 million). The Army Corps of Engineers Portland District alone anchors $5 million across 24 awards. The Southeastern Power Administration, Tennessee Valley Authority, and Naval Sea Systems Command represent additional customer concentration in power and defense infrastructure maintenance.

Doble holds multiple single-award and multi-award indefinite delivery vehicles anchoring its federal footprint. The top parent vehicles include a $693,970 WAPA oil sample analysis and testing IDV (17 task orders, $569 thousand combined potential value), a Bureau of Reclamation dissolved gas analysis monitors IDV (15 task orders, $530 thousand), a $4 million Army Corps of Engineers Equipment Rental IDV exercising multiple option years (3 task orders), and several smaller support contracts. Activity has moderated in 2025 and 2026 after consistent 11–16 awards per year from 2022 through 2024, with only three awards recorded in 2026 through June. Twelve awards carrying combined potential value of $5.1 million reach ultimate completion within the next twenty-four months, creating recompete exposure for diagnostic testing and equipment leasing work across WAPA, the Bureau of Reclamation, and the Army Corps of Engineers.

Doble operates primarily as a prime contractor but maintains a limited subcontractor footprint on national laboratory and defense facility support work. Sub-awards place Doble as a subcontractor to Amentum Technology Inc. for maintenance and operations engineering at NASA Langley Research Center (Langley Airforce Research Center) under the Center Maintenance, Operations, and Engineering contract, to Triad National Security LLC for Los Alamos National Laboratory management and operations competition work, and to Consolidated Nuclear Security LLC for Y-12 National Security Complex and Pantex Plant facility management funding, with additional subs to Netcentric Technology LLC and Consolidated Nuclear Security supporting space launch and national security operations. These sub-awards total six in the source record and represent specialized instrumentation and technical support roles rather than prime contracting capability.

As a subsidiary of St. Louis-based Esco Technologies Inc., a diversified manufacturing and technology firm with federal contracting experience across defense, aerospace, and industrial sectors, Doble brings broader corporate manufacturing and engineering capabilities to its power infrastructure diagnostic focus. The parent company structure provides supply-chain resilience and integration with other Esco subsidiaries serving federal agencies, though Doble's contracts reflect its specialized expertise in power system diagnostics and do not indicate active subcontracting relationships with other Esco divisions in the visible award record.

Doble Engineering Company offers a comprehensive and extensive scope of diagnostic products and services to test and maintain transformers, bushings, protective relays, circuit breakers, rotating machines and more. Doble Engineering Company is dedicated to helping the global power industry overcome its challenges, no matter how big or how small. For more information, please contact us at (617) 924-4900.