What organizations are under the Department of Energy?

Could you please elaborate on the various organizations that fall under the purview of the Department of Energy? I'm particularly interested in understanding the roles and responsibilities of these organizations, as well as their contributions to the overall mission of the department. Are there any specific examples of initiatives or programs that these organizations have spearheaded in recent years? Additionally, how does the department ensure that these organizations are effectively collaborating and aligned with its strategic goals?