BANGKOK (AFX-ASIA) – Electricity Generating Plc said first quarter net profit rose to 1.24 billion baht (US$1=42 baht) from the year earlier 442.58 million as total revenue increased 13.85% to 3.248 billion and costs were kept virtually unchanged. It said the bulk of sales came from the principal subsidiaries, REGCO and KEGCO, at 2.376 billion…