D4EnergySolutions, LLC
About D4
Since 2018, D4EnergySolutions, LLC has provided independent transformer consulting to utilities, power project developers, industrial customers, EPC firms, and owner’s engineers. We bring experienced transformer specialists to projects that need technical review, manufacturing inspections, factory audits, and test witnessing.
Serving customers since 2018
Our mission
Provide practical transformer expertise that helps customers make informed decisions throughout their projects.
We support customers from specifications and purchasing through design review, manufacturing observations, inspections, and test witnessing. Our work produces documented findings and recommendations for customer consideration.
Experience that fits your project
Our consultants bring decades of industry experience across transformer design, manufacturing, testing, quality, and utility operations.
We match each assignment with the relevant expertise, giving customers access to specialists when they need additional technical support.
How we work
Every project has its own requirements. We work with you to define the scope, identify the right consultant, and coordinate the assignment around your needs.
D4 brings together independent consultants within a coordinated business structure, providing flexible access to expertise without the need to add a full-time specialist to your staff.
Our commitment
We focus on clear communication, documented observations, and practical recommendations. Our role centers on technical review, observation, and witnessing to support your decisions.
Treat people fairly. Do things right the first time. Keep improving.
These principles guide how we work with customers and our team of consultants.
Meet our team
Explore our consultants’ backgrounds, specialties, and locations, or learn more about the support available for your transformer project.
Contact D4
For transformer consulting support, contact Eric Doak.