The Green New Deal (GND) represents a massive increase in the power of government over the ability of individuals and businesses to use their resources in ways that they deem appropriate. Yet despite its purported goal of limiting future temperature increases by drastically reducing greenhouse gas emissions, it will likely have no measurable impact on temperatures. At its core, the GND is the substitution of central planning in place of market forces for resource allocation, specifically in the US energy and transportation sectors and more broadly in the broad industrial, business, and housing sectors. A GND policy would yield no benefits in its central energy, environment, and climate context, but it would impose large economic costs.