Medellin-based multinational electric power transmission giant ISA on May 6 announced a 32.4% year-on-year jump in first quarter (1Q) 2021 net income, to COP$508 billion (US$135 million). Operating revenues also rose 14% year-on-year, to COP$2.4 trillion (US$638 million), while earnings before interest, taxes, depreciation and amortization (EBITDA) rose 14.3%, to COP$1.5