The list of companies developing or otherwise pursuing cold-ironing technologies and applications is getting longer rapidly.

FORBES: Plug-in-Power Set for Massive Growth at Major Ports

Cold-ironing is when ships at berth connect via large cables to the shore-side power grid for electricity.

FORBES: Cold Ironing Comes of Age in California

The state of California has mandated cold-ironing for container ships by 2014.

FORBES: Cold Ironing Comes of Age in California

Cold-ironing allows ships at dock to plug into shore-side electricity sources to power electronic and mechanical systems needed for loading and unloading activities.

FORBES: Plug-in-Power Set for Massive Growth at Major Ports

The giants like Siemens, BP, ExxonMobil have staked a claim on cold-ironing but then so have smaller outfits like TEMCO, Cavotec, Wittmar (CleanAir Marine Power) and Cochran.

FORBES: Plug-in-Power Set for Massive Growth at Major Ports