THE Department of Energy (DoE) said interest is building in the looming auction for coal reserves, particularly in the area deemed likely to be most productive — Semirara Island. “Maybe not all of those (sites) will have takers, but I’m sure the bigger ones that are more commercially interesting will be up for grabs,” Energy Secretary Sharon S. Garin said on Tuesday on the sidelines of the ASEAN Editors and Economic Opinion Leaders Forum. The Do…