Fig. 3From: Integrated planning of grids and energy conversion units in municipal multi-energy carrier systems(a) Overview of test case with 900 buildings (black dots) in 18 grid groups with central conversion nodes (stars), connection nodes (green upwards triangles), and exchange nodes (green downwards triangles). Possible electric (blue) and heat (red) grid connections on the upper grid level. (b) Expansion result of electric and heat grid on upper grid levelBack to article page