TMC Services cost estimates have included multi-billion dollar projects. TMC Services estimates include bottom-up cost estimates for complex and unique systems from conceptual design through construction to commissioning. TMC Services performs parametric operations and maintenance costing analyses as a function of power rates, staffing levels, and operation logistics, and other combinations of cost parameters.

TMC Services also performs independent cost reviews, including assessing cost adequacy of bid package costs. TMC Services' experience with evaluation of deterministic and probabilistic contingency methods and their application to projects is extensive. TMC Services provides engineering economic analysis support, including cost projections for operational performance levels integrated with project deployment schedules and levels of funding from the sponsoring organization.