A 25 ton solar thermal heat pump/chiller (STHP/C) has been commissioned at a hotel in Desert Palm Springs, California. Thermal heat pumps are powered by heat vs electricity. They deliver good energy and cost savings even when powered by natural gas. With renewable heat, and when chilling is co-produced, the savings increase dramatically. This STHP/C is powered by 500,000 BTU/hour of 250°F heat from a solar thermal collector. A backup natural gas heater enables 24/7 operation. The domestic hot water heating is 800,000 BTU/hour at 130°F. The chilling co-product is 25 tons at 44°F.