The Ministry of Industry and Trade has proposed regulations that limit the connection of rooftop solar power systems to the grid if they are not self-produced and self-consumed. This is due to concerns about system operating costs, which could be incurred by unconnected systems. However, individuals who choose to connect their rooftop solar power systems to the grid can distribute excess output for free. The total capacity of rooftop solar power is capped at 2,600 MW.
Experts have criticized these regulations as not being attractive enough to encourage investment, as people are not allowed to sell excess power or sell it for free, which is economically ineffective. The Electricity Regulatory Authority also takes a cautious stance on rooftop solar power and believes it should only be used for on-site consumption to avoid system imbalance and unnecessary costs.
Rooftop solar capacity currently accounts for over 9% of total capacity in the national electricity system. However, its instability due to solar radiation dependency poses challenges for system balance. Storage solutions such as battery packs or backup power sources increase costs for both individuals and the electricity industry.
The Ministry of Industry and Trade warns that rooftop solar sources are scattered and small-scale, making data collection and system control difficult. Operating rooftop solar power may affect traditional power plants’ capacity, leading to increased operating costs and wasted resources. This may result in cutting renewable energy sources when traditional sources are minimized to balance the system.
Overall, the development of rooftop solar power brings concerns about system costs and the need for traditional power sources to meet renewable energy uncertainties. Investors may end up paying costs to ensure system operation while receiving stable power supply despite government incentives to encourage renewable energy.
