Hamas militants do (still), according to this report in Haaretz.

Hamas seizes half the amount of fuel transferred by Israel to the Strip. The amount confiscated is approximately 400,000 of the 800,000 liters of diesel transferred to Gaza weekly and intended for uses such as generators, hospitals, water pumps and sewage pumps. In contrast, Hamas uses this fuel for militant purposes.

This fuel is partly funded by the EU via its Pegase programme, which is the mechanism for financing the Palestinian Reform and Development Plan.