Thailand's new Power Development Plan (PDP) will significantly open the electricity market to private sector competition, enabling direct power purchase agreements (DPAs) between renewable producers and businesses, decentralized solar generation, and modernized grid systems. This marks a shift from Egat's monopoly model (ESB) toward competitive pricing, energy security through reduced import dependence, and a target of 50–65% renewable energy by 2050. Key opportunities for SMEs include direct renewable power trading, rooftop solar schemes, and participation in decentralized generation networks.