Power systems with internally integrated aftertreatment and modular features

A power system adapted to be transported as a single unit, comprising:

• a power source that consumes a fuel and exhausts a gas and is capable of generating at least 100 kilowatts of brake power;
• a power module comprising an electrical generator capable of generating at least 100 kilowatts of electrical power (kWe) and adapted to be driven by the power source;
• and
• a housing that contains the power source, the power module, a first container module adapted to contain the fuel consumed by the power source, an aftertreatment system adapted to purify the gas exhausted from the power source, and a second container module adapted to contain a reductant consumed by the aftertreatment system;
• wherein the power source and power module are removably attachable as a single unit to the power system;
• and
• wherein the housing has outer dimensions that are sufficiently similar to the outer dimensions of an ISO shipping container to permit the housing to be stacked with ISO shipping containers.