Energy & MiningBlue Lake Hydroelectric Expansion
Underground powerhouse and tunnel works for a hydropower expansion in remote Southeast Alaska.
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Energy & Mining
From our first energy projects to current major efforts, we have built a reputation for developing practical and cost-effective solutions to underground energy infrastructure challenges.
Hydropower
We understand your hydropower project. Hoffman Tunnels has completed a range of hydropower projects from FERC relicensing, penstocks and power houses to tunnel inspection, rehabilitation and new construction.
Our practical solutions are tailored to the realities of construction on hydropower facilities. We do this by properly identifying and addressing risks inherent to underground construction and by emphasizing field experience for every employee.
Electricity & Gas Transmission
Transmission and distribution circuits increasingly run underground, often in congested corridors where open cut is not an option. Our microtunnelling, pipe jacking, and Direct Pipe experience is built for exactly that constraint.
We coordinate with utilities and permitting agencies early, so the alignment, access strategy, and ground investigation are settled before the design is frozen.
Mine Access & Infrastructure
Mine access drives, declines, ventilation shafts, and underground infrastructure must be ready when the ore body is — not after. We design for the loading equipment, the ventilation duty, and the ground conditions that a mine actually has.
Our geotechnical engineers work from the exploration data you already have, and tell you plainly where that data will not carry the design.
Research Facilities
National laboratories and science campuses need deep, stable, and remarkably precise underground spaces. Our tunnel and cavern design experience transfers directly to accelerator halls, detector caverns, and instrumentation galleries.
We coordinate the civil, structural, and mechanical interfaces in these facilities as a single design, because the tolerances that matter are set by the equipment, not the concrete.
Specialty Services
We have vast experience in various aspects of underground energy infrastructure, covering hydropower, electricity and gas transmission, wind, resource extraction, and research facilities. Our expertise includes designing new facilities, integrating them with existing structures, and upgrading aging facilities for extended lifespan.
We facilitate seamless collaboration among mechanical and electrical disciplines, environmental agencies, regulatory bodies, and key stakeholders through our interface coordination services. Our team includes certified inspectors under FERC Part 12, subject matter experts in Probable Failure Mode Analyses, and professionals with High Angle Rope Inspection certification.
Energy & Mining in practice.
Energy & MiningBlue Lake Hydroelectric Expansion project details
Energy & MiningGorge 2nd Tunnel
A high-pressure water conveyance tunnel for a major hydroelectric facility in the Cascade Range.
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Energy & MiningIowa Hill Pumped Storage Project
Underground powerhouse and headrace works for a pumped storage hydroelectric facility.
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Energy & MiningLong-Baseline Neutrino Facility
A 4.5-mile deep neutrino research cavern complex in a former gold mine.
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How we serve energy & mining.
Tunnels & Underground Engineering
From feasibility studies to detailed design, to engineering and management services during construction.
Trenchless Engineering
Consulting services for small-diameter tunnels and trenchless technologies.
Tunnel Inspection & Rehabilitation
Inspection and rehabilitation services that improve the safety, functionality and longevity of underground structures.
Advisory Consulting
Our consulting services go deeper than design — we advise at every stage of project development.
Engineering Consulting
Multi-disciplinary engineering, analysis and digital delivery for complex underground assets.
Construction Management
Good construction management paves the way for safe, efficient project execution.
Construction Claims Services
Contractual clarity from notice to resolution, supported by forensic engineering.
Other markets.
Transportation Market
Responsive and comprehensive solutions to highway, freight rail, and mass transit and commuter rail clients. W…
Water Market
Since our founding we have been at the forefront of providing cost-effective, practical, and innovative engine…
Wastewater Market
Efficient and affordable design and construction management services for wastewater conveyance facilities. Sin…
Talk to the energy & mining team.
Every enquiry is reviewed by a principal engineer in the relevant market — not a sales team. If your question is a technical one, you will get a technical answer, and if we are not the right firm for the job, we will say so.
Or email us directly at support@hoffmantunnels.com.