
Rail-Grade Power Electronics Restoration Since 2006.
About TELIS
The TELIS Edge
The Rail-Grade Standard: Applying engineering benchmarks originally designed for the high-heat, high-vibration conditions of locomotives to utility-scale solar and energy assets.
Institutional Intelligence: Twenty year repository of historical diagnostic data, blueprints, and fault-trend data used to support legacy hardware.
Proven Solutions: Leveraging proprietary diagnostic services to provide partners with accurate scoping and a track record of executing the job right—the first time.
ISO-Certified Quality: Maintaining a rigorous, audited framework to ensure every restoration meets the highest safety protocols and performance requirements.
TELIS was forged in the heavy-duty, high-stakes environment of the railroad industry. Since 2006, our team has applied locomotive-grade engineering standards to provide our partners with peace of mind and healthier bottom lines.
We are far more than a repair shop; we are an ISO-certified engineering firm that leverages decades of institutional intelligence to bridge the gap between rugged industrial heritage and modern grid innovation.
Our track record is built on doing the job the right way—proven solutions, on time, every time.

TELIS Core Values
Partnership
Quality
Innovation
We are an extension of our clients' O&M and Engineering teams, built on technical integrity and transparent results. Our customers don’t pay for guesswork. We succeed when our partners avoid massive Capital Expenditure by extending the life of existing assets or by reducing Operating Expenses through increased reliability.
We don’t just "swap boards"; we restore them to like-new—and often better-than-original—specifications. We rely on root-cause analysis and proactive "hardening." By "stiffening" the weak points of a circuit, a TELIS-restored board doesn't just work on the bench—it is intended to survive in the field for years to come.
Innovation at TELIS is the application of deep engineering to solve modern failures. We use twenty years of data to reverse-engineer and support legacy or "orphaned" hardware. We keep locomotives moving and the grid powered when original equipment is no longer supported. We are the alternative to forced upgrades.


