Demonstrators stressed that they are only seeking accountability, adding that other protests will be held in other Lebanese regions and before other ministries.
In a statement released at the end of the protests, activists accused officials of stealing public funds without being held accountable.
"Political corruption knows no bounds in Lebanon... all officials robbing the people must be held accountable for their actions.
Millions of dollars have been spent on the electricity sector...yet, Lebanon lives in darkness."
Consequently, activists noted that their movements are open-ended, calling for a new protest to be held on the 3rd of October outside the headquarters of Electricite du Liban in Corniche el-Nahr.
Lebanon has been grappling with a waste crisis following the July 17 closure of the Naameh landfill.
Following the closure of the landfill, civil society activists have been staging protests that grew into a popular uprising against the political class that has dominated the country since its civil war ended in 1990.
Their demands have increased to include reforms in the energy sector and an end to corruption.