Fossil

Day & Zimmermann is the nation’s leading provider of maintenance and modifications services to the U.S. power industry helping coal-fired and natural gas plant owners generate power.

What We Do

Maintenance & Modifications

Our Total Accountability Model provides a single point of contact driving accountability across safety, human performance, cost, schedule, quality, and resource supply.

Learn More

Projects & Construction

Our teams are familiar with, and have worked on, virtually every primary and secondary plant system in both outage and non-outage environments, routinely executing critical and near-critical path work scopes.

Learn More

Condenser Services

As the largest condenser retubing contractor in the United States, we bring innovative and cost-effective services using the most advance methods, tooling, and equipment in the industry.

Learn More

Valve Services

Our full-scope capabilities are an integrated approach, including valve and operator testing, repair, and refurbishment.

Learn More

Scaffolding

From scaffolding design to decontamination and storage, our planning and implementation process is designed to reduce or consolidate scaffold use.

Learn More

Professional Technical Services

The Professional Technical Staffing business line specializes in providing cost-competitive workforce solutions to the power, process, and industrial markets.

Learn More

Fossil Fuels

Approximately 66% of all US energy is generated by fossil fuels.

Emissions from coal-based electricity generation have decreased by more than 40% since the 1970s while coal use in the U.S. has tripled.

The coal industry provides more than $1 billion in total U.S. labor income.