EPC – Hawaii Refinery Compression Addition

Tegre was engaged to provide engineering, design, procurement and construction management support for a refinery upgrade in Hawaii, focused on increasing overhead vapor compression capacity and improving overall system performance. Tegre is providing EPCM services to integrate a new skid-mounted compressor package into an existing operating facility. The compressor system includes the compressor and all…

RNG Biogas Facility Operations

Tegre provides Operators and manages the operations of renewable natural gas (RNG) power generation facilities on behalf of our clients. Our scope includes commissioning, operations manuals, and long-term staffing. This hands-on operational experience directly informs our engineering work, further enabling our engineering and design team to design facilities that are practical, efficient, and truly operable in the field.

EI&C: Facility Upgrades, Turn Key PLC & Arc Flash Studies

Tegre has/is supporting multiple clients with EI&C facility upgrades.  Scope of services include PLC upgrade and replacement, I/O list development based on existing station and ESD programs, supply of junction boxes with connection diagrams and BOMs, equipment inspection, conduit and cable schedules, plan drawings, record drawings for ESD system, shutdown cause and effect diagrams, and…

Well Site Design and Engineering

Tegre provides well site design and engineering services to multiple clients across many of the onshore US basins. We support both greenfield and brownfield opportunities, delivering engineered solutions for production facilities, site expansions, and emissions compliance upgrades. Our regional experience and agile delivery model enable efficient project execution and client support.

Instrument Air Conversion

Tegre is delivering both engineering design and equipment solutions for clients transitioning compressor stations and remote sites from instrument gas to instrument air systems. Our integrated approach—combining site integration engineering and design with instrument air package fabrication—ensures proper sizing, seamless integration, and reliable performance. From concept through startup and support, we deliver cost-effective, turnkey solutions.

Gas Plant CO2 Compression FEED

Tegre was tasked to complete an impact study for an existing gathering system and pipeline corridor.  Scope included surveying power lines running parallel and crossing the corridor, road crossings, major drainages, structures inside the corridor and minimal distance outside, exposed lines, and major natural formations.  Deliverables includes drawings and shape files.

Emissions Strategy & Marginal Abatement Cost (MAC) Analysis

Tegre has supported multiple clients strategically high-grade emissions reduction projects by conducting Marginal Abatement Cost (MAC) analyses and developing actionable emissions reduction roadmaps. Our work identifies and prioritizes the most cost-effective and impactful asset modifications and upgrades to meet corporate ESG and emissions goals, aligning technical feasibility with long-term commercial and environmental value.