Cooling-Water Intake & Entrainment

Large cooling-water intakes trap fish on screens and pull eggs and larvae through the plant; a generator with no bulk intake causes neither harm.

Two intake harms

• Impingement: fish and larger organisms pinned against intake screens by the inflow
• Entrainment: eggs, larvae, and plankton small enough to pass the screens are drawn through the plant and killed

The scale of harm rises with the volume withdrawn, so once-through plants, which withdraw enormous volumes, cause the most. Mitigation, screens, reduced intake velocity, and closed-loop conversion, reduces but does not eliminate it.

Why the burner avoids it

Entrainment and impingement require a large water intake. MetroVolt has no steam condenser and therefore no bulk cooling-water intake. Its residual heat is rejected to air. Without an intake there is no screen to impinge organisms and no throughflow to entrain them.

A concrete environmental win

Removing the intake removes an impact that has driven costly retrofits and litigation across the thermal fleet. It is one of the clearest, most tangible consequences of eliminating the steam cycle: no intake, no aquatic entrainment.

Honest boundary

This benefit concerns the power plant's cooling intake specifically. A campus may still draw ordinary facility water from municipal supply. But the large ecological harm associated with power-plant cooling intakes is absent because the intake itself is absent.