Enhance the README first section with use cases description.

README.md

@@ -5,8 +5,44 @@ Dynamically adjusts CPU frequencies and GPU power based on power, electricity pr
 
 All the functionality and code logic located in `src/hpc_eff` stem from https://gitlab.cesnet.cz/dexter/hpc_eff.
 
----
+## ThrottlePoint use cases
+* Driver: carbon intensity of electricity
+  * Primary GreenDIGITscenario
+  * Lowering carbon impact
+* Driver: electricity cost or consumption profile
+  * Lowering operational costs
+* Driver: datacenter temperature
+  * Optimize datacenter usage
+  * Continuity of services
+* Driver: power-grid or local heating signals
+  * Lowering operational costs, carbon impact
+
+<table>
+  <tr>
+    <td>
+      <a href="docs/images/ThrottlePoint-usecases-1.png">
+        <img src="docs/images/ThrottlePoint-usecases-1.png" alt="ThrottlePoint Use Case 1" width="200"/>
+      </a>
+    </td>
+    <td>
+      <a href="docs/images/ThrottlePoint-usecases-2.png">
+        <img src="docs/images/ThrottlePoint-usecases-2.png" alt="ThrottlePoint Use Case 2" width="200"/>
+      </a>
+    </td>
+    <td>
+      <a href="docs/images/ThrottlePoint-usecases-3.png">
+        <img src="docs/images/ThrottlePoint-usecases-3.png" alt="ThrottlePoint Use Case 3" width="200"/>
+      </a>
+    </td>
+    <td>
+      <a href="docs/images/ThrottlePoint-usecases-4.png">
+        <img src="docs/images/ThrottlePoint-usecases-4.png" alt="ThrottlePoint Use Case 4" width="200"/>
+      </a>
+    </td>
+  </tr>
+</table>
 
+---
 ## Overview
 
 ThrottlePoint is designed to be run periodically (e.g., via `cron` every few minutes) under root.