Abu Hasna said that due to the blockade imposed on Gaza by Israel, Gaza residents typically received only 7 hours of electricity a day. When the Israeli aerial bombardment started last Saturday, the electricity flow was reduced to five hours a day. Gaza is now in complete dark.
"There is no electricity and when you don't have electricity, you will not have water and this makes people's life more difficult than what they are already," he said.
Gaza's hospitals were already in critical condition before the Israeli invasion, and the influx of thousands of wounded has deepened the crisis. In Gaza's Shifa hospital, temporary intensive care units for emergency surgeries have had to be improvised.
In live pictures from the hospitals Saturday, bleeding women, men and children lay on floors as they waited to be moved to already-occupied tables and treated.
Abu Hasna says that Gaza hospitals "lack everything from specialized doctors to intensive care units to operation rooms.
"They cannot cope with such number of killed and injured people."
Before the ground offensive, a lucky few of the injured were getting out and into Egypt to get emergency medical care.
On Sunday, the border crossing was closed. Not even the wounded were allowed out, and help wasn't allowed in.
''We are doctors, we want to go into Gaza but they wont let us in, the Egyptians," said Dr. Nicolas Dousis-Rassias of Doctors of Peace as he stood at the border. "Won't let us in.''
A long line of trucks carrying food and medicine from Arab countries at the border just waits.
The Egyptian government is under pressure to open the border fully, so civilians can get to safety.
Egypt says it is following instructions from the Israel, because opening the border would be too dangerous.
With reporting by ABC News' Lama Hasan in Egypt.