Rooftop solar power systems based on the self-generation and self-consumption model are becoming an increasingly proactive energy solution for households and businesses across Northern Vietnam. Not only do they help reduce electricity bills, but these systems also contribute to easing the load on the national power grid, supporting sustainable development goals and the transition to green energy.
Nearly 8,700 Customers Have Installed Systems
According to the Northern Power Corporation (EVNNPC), as of June 30, 2025, a total of 8,664 customers across 17 northern provinces and cities (excluding Hanoi) have installed rooftop solar systems, with a combined installed capacity reaching 577.1 MWp.
Despite unfavorable weather conditions in June 2025, electricity output from these systems fed into the grid was still estimated at 52.7 million kWh. Over the first six months of the year, total rooftop solar generation exceeded 226 million kWh. For the entire year of 2025, EVNNPC expects to purchase approximately 530 million kWh of rooftop solar electricity at a projected cost of nearly VND 1,005 billion.
Implementation in the field has proven the clear effectiveness of rooftop solar systems. For example, at Nam Dinh Mechanical Company (Ninh Binh Province), a 350kWp solar system installed on a 2,000m² factory rooftop now supplies about 35% of the company’s electricity demand, helping the business save an average of VND 100 million per month.
On a smaller scale, Mr. Le Cao Uy’s household in Ninh Binh City installed a 6kWp system with battery storage, reducing his monthly electricity bill by over VND 1.5 million especially during peak summer months. Inspired by his results, he has also advised many neighbors to invest in their own on-site renewable energy systems.
Rooftop Solar System at Nam Dinh Mechanical Company
EVNNPC Promotes Rooftop Solar Power Development
According to Ms. Trinh Thi Kim Ngan, Head of Communications at the Northern Power Corporation (EVNNPC), although the average solar radiation potential in Northern Vietnam is lower than in other regions, it is still sufficient to effectively harness rooftop solar energy. The self-generation and self-consumption model not only helps customers save on electricity bills but also supports the power sector by reducing grid load during peak hours, lowering greenhouse gas emissions, and contributing to environmental protection.
EVNNPC has issued numerous guidelines and documents to assist local power companies in promoting this model. The corporation has also called for cooperation from local authorities, departments, and mass organizations to encourage residents and businesses to install rooftop solar systems.
EVNNPC Issues Guidelines on the Implementation Process for Grid-Connected Rooftop Solar Systems with Self-Consumption and No Surplus Power Sale
According to the updated Power Development Plan VIII, Vietnam’s rooftop solar potential is estimated at around 48,200 MW. Promoting grid-connected rooftop solar systems for self-generation and self-consumption without selling surplus electricity is considered a key solution to reducing the pressure on power supply, lowering energy costs for households and businesses, and significantly contributing to the national goals of energy security, green economic development, and long-term sustainability as directed by the Government.
