Delta-X Research provides decision-support tools that elevate your transformer maintenance programme so you can manage risk with confidence.
Trusted since 1992
Over three decades of transformer expertise
15 of the top 20 US utilities
Rely on TOA to manage their transformer fleets
We challenge the status quo by applying the scientific method and building on first principles. We invest in research to provide high-quality information so you can make high-quality decisions.
Quality information presented simply and conveniently makes critical decision-making easier. And knowing the team behind the information is always available to assist provides confidence in making those hard choices.
Leading with science demands objectivity. And by providing decision-support tools without associated services or hardware, we can work with any other vendor. By us being independent, you are independent.
The market-leading solution for managing and interpreting insulating liquid test data, including dissolved gas analysis.
Brings online DGA monitor data to your TOA database, enabling advanced analytics on a complete DGA system of record.
Dissolved gas analysis is one of the most widely used diagnostic tools for detecting and assessing changes to the condition of a liquid-filled transformer. But a significant number of unplanned outages still occur from transformer faults that should be detectable by DGA — and maintenance teams remain frustrated by false alarms raised by conventional methods.
Reliability-based DGA is an improved interpretation method that associates fault gas production with transformer failures and provides a direct, actionable indication of risk.
Learn more about the science →“Delta-X Research’s technical expertise in the field of dissolved-gas analysis (DGA) is on a whole other level from other vendors...”
Frost & Sullivan
Recognising TOA with Reliability-based DGA for its impact on transformer asset management.
Utilities Tech Outlook
Recognised as a leading innovator in utility technology solutions.
When you become a TOA user, you join a community of peers dedicated to providing safe, reliable electricity. Together, we keep the power on and the world moving forward.
Book a DemoTechnical expertise, industry developments, and product updates from the Delta-X Research team.
Sean Casey is representing Delta-X Research at the IEEE Rural Electric Power Conference, connecting with rural and municipal utility engineers on how Reliability-based DGA helps smaller utility operations manage transformer health analytics, identify early fault indicators, and prioritise fleet maintenance with limited internal resources.
Delta-X Research co-hosts the TransformerMonitoring.com Hospitality Suite at the 2026 International Conference of Doble Clients, alongside DNV, Kinectrics, and Systems With Intelligence. Three evenings of informal conversation for transformer professionals, March 30–April 1 at the Deco Room, Level 3.
Thomas Anderson is representing Delta-X Research at the Northwest Public Power Association's Engineering & Operations Conference and Trade Show in Portland, Oregon — Booth #105. Meet the team to discuss how TOA and Monitor Watch help Pacific Northwest utilities optimise transformer maintenance and replacement decisions.
