The employees of the National Renewable Energy Laboratory (NREL) and the Alliance for Sustainable Energy, LLC, have pledged more than $500,000 to support local charities during the lab’s annual holiday giving campaign. NREL employees have committed more than $466,000 to the Partnership for Colorado, Mile High United Way and other charities. The Alliance for Sustainable Energy, which manages NREL for the U.S. Department of Energy, will contribute another 10% for every dollar of the employee co...