Fig. 10From: A study on how efficient measures for secondary district heating system performance can be encouraged by motivational tariffsPayback times for the best combination of actions for low (20 euro/MWh) and high (130 euro/MWh) gas prices. Actions are 2V (for one action), 2V + LT (for two actions), 2V + LT + parallel (for three actions) and 2V + LT + parallel + instant (for four actions)Back to article page