Catalog · Geothermal Energy Networks: Transforming Our Thermal Energy System Lecture 15 of 26 Session 5-1: Introduction to Geothermal Heat Pumps ← Previous Session 4-4: Expanding Geothermal Energy Networks at a Global Scale Next → Session 5-2: Differences Between Geothermal Heat Pumps and GEN ✓ Mark complete Materials Transcript (PDF) ↗ transcript