Coal Plant Upgrades — Built with Schedule, Budget, and Safety in Mind

 

For more than four decades, utility owners have trusted Day & Zimmermann (D&Z) to support their coal-fired power generation needs. Today, we continue to help our utility partners modernize and adapt their facilities through major retrofit projects including: 

  • Selective Catalytic Reduction (SCR) installations

  • Fuel conversions

  • Structural or system modifications

  • SO2 Upgrades

  • NOx Upgrades

  • Baghouse/ESP Upgrades

  • ELG Compliance Upgrades

    • Bottom Ash

    • FGD Wastewater

 

 

D&Z understands these upgrades are mission-critical; to be completed safely, efficiently, and with minimal disruption to ongoing operations.


At the heart of every project we take on is a steadfast commitment to safety. Safety shapes how we plan, staff, and execute work. Our safety culture is reinforced by clear leadership and individual accountability, propriety tools and programs, and an unrelenting focus on protecting people, assets, and outcomes.

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Schedule Certainty. Labor Confidence. Execution You Can Trust

Coal projects demand specialized skills and disciplined execution. Whether you’re upgrading an operating unit, executing environmental retrofits, or delivering reliable power to your customer base, D&Z deploys craft labor with hands-on coal plant experience. Our proprietary recruiting tools, regional labor partnerships, and rigorous resource planning ensure consistent access to qualified trades no matter your labor posture.

Field-Proven Leadership for Coal Plant Complexity 


Our project leaders come from the field and understand the realities of coal-fired generation—tight outage windows, legacy systems, and zero margin for error. Having managed major coal construction and retrofit work firsthand, they anticipate challenges early, make decisive calls, and keep work moving safely and efficiently. The result is clearer communication, stronger coordination, and predictable execution.

 

Schedule Discipline Built for Reality


Coal projects live and die by the schedule—especially during outages and tie-ins. D&Z embeds schedule control from the earliest planning phases through turnover, aligning craft deployment, work packaging, and field execution to critical path activities. Our teams understand how to work within tight outage windows, coordinate multiple trades, and adapt to legacy plant conditions without losing momentum. The result is predictable milestones, minimized downtime, and on-time return to service.

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Experience that Adds Value from Day Zero 

Day & Zimmermann’s history in coal and gas power gives you an edge. We’ve completed SCR retrofits in tight timeframes, executed fuel conversions in challenging site conditions, and coordinated upgrades during major outages, while partnering with our customers to find the best solutions for meeting the demands of regulators, corporate boards, and plant operators. Many of D&Z’s leaders started in the field, which creates a firsthand understanding of project planning and real-world execution. That insight helps us keep projects on track by anticipating issues, communicating more effectively, and building lasting trust with our clients.

As a privately held company, our focus is where it belongs: on delivering results for you, not shareholders. D&Z meets your needs by building partnerships based on transparency, responsiveness, and a shared commitment to excellence.


 
safety at Coal and gas power plant

Focused on Retrofit Success in Power

We know retrofit coal plant upgrades are inherently complex, these scopes require careful planning, strong communication, and zero room for error Day & Zimmermann specializes in coal plant upgrade projects, particularly Selective Catalytic Reduction (SCR) installations and coal-to-gas conversions.  D&Z brings a deep understanding of working in challenging environments, with proven methods for integrating seamlessly into your operations team to deliver projects that stay on track and on budget without compromising plant performance.


D&Z’s long-standing experience in power generation engineering, construction, and maintenance means we know the stakes . Outage  and project windows are often tight. Regulatory milestones are fixed. And stakeholders are watching. That’s why D&Z treats every project like it’s our own — taking ownership from day one, engaging early and often, and adjusting proactively to your evolving needs.

crew Harrison OUtage-1

Integrated EPC Solutions for Your Critical Modifications

 

For customers seeking an EPC solution, Day & Zimmermann provides full-scope engineering, procurement, and construction (EPC) services for coal plant modifications and conversions. Our teams work in close collaboration — engineers, project managers, field leaders, and procurement specialists operating as one unit to align design with constructability and ensure the smooth handoff from planning to execution.
D&Z provides a comprehensive, disciplined approach including:

  • Designing SCR systems that meet emissions targets

  • Managing long-lead equipment procurement

  • Rerouting critical systems during a fuel conversion 

D&Z’s EPC model is built on trust, flexibility, and accountability, with full transparency into cost, schedule, and risk at every stage of the process.

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