Rooftop solar power — an inevitable trend
Rooftop solar power refers to photovoltaic systems installed on the roofs of structures such as homes, factories, office buildings, and schools to harness solar energy and convert it into electricity for daily use and production. With advantages such as not occupying land, easy installation, and a lifespan of 20–25 years, this model is attracting increasing interest among households and organisations in Ha Noi.
Although the capital does not enjoy as many hours of sunshine as the central or southern provinces, with more than 1,500–1,800 hours per year, Ha Noi still has significant potential to develop rooftop solar power, especially in new urban areas, industrial zones and other locations with favourable installation conditions. Making use of existing rooftops not only helps reduce electricity bills but also eases pressure on the grid during peak hours, especially on hot sunny days.
According to calculations by several installation and research units, each 1kWp of rooftop solar can generate an average of 3.5–4.5kWh per day. A 5kWp system produces more than 150kWh per month, equivalent to the typical electricity consumption of an average household in Ha Noi.
In addition to its economic benefits, rooftop solar power helps reduce greenhouse gas emissions. It is estimated that each kWh of solar electricity produced cuts CO₂ by about 0.7kg compared to electricity generated from fossil fuels.
Towards a green and smart city
Developing rooftop solar power is not only an energy-saving measure but also aligns with Ha Noi’s orientation towards building a green city. Under the National Strategy on Green Growth, solar power is one of the core solutions to improve energy efficiency, reduce primary energy consumption, and limit emissions.
Many enterprises and commercial buildings in the capital have taken the lead in installing rooftop solar systems to demonstrate social responsibility and affirm their commitment to sustainable development. Several schools, hospitals, and administrative agencies have also studied and applied this model to power lighting, air conditioning, and water pumping, thereby helping reduce operational costs for the state budget.
The Corner Stone Building at No. 16 Phan Chu Trinh Street, Ha Noi, is among the major facilities pioneering in energy efficiency. The installation of a rooftop solar system has significantly reduced electricity expenses and reflects its commitment to building a green eco-friendly building in the heart of the capital.
Alongside businesses, many Ha Noi households are proactively investing in rooftop solar systems.
Vo Ngoc My, a resident of the Khai Son Town urban area (Long Bien), shared: “Our house gets good sunlight, so we decided to install rooftop solar power. After nearly three months, the amount of electricity drawn from the grid has decreased noticeably. The sense of energy autonomy gives me peace of mind, and I consider this a long-term investment in our family’s sustainability.”
EVNHANOI accompanies customers in energy transition
In line with the policy of promoting clean energy, the Ha Noi Power Corporation (EVNHANOI) has been supporting customers throughout the process of implementing rooftop solar power, from technical consultation and legal guidance to operational procedures and payment processes. All procedures are conducted transparently and in compliance with the electricity sector’s technical standards, ensuring safety and efficiency for users.
Customers wishing to install a system can contact their local power company directly or request assistance via the EVNHANOI mobile application, the website evnhanoi.vn, or the hotline 19001288.
In the time ahead, EVNHANOI will continue to strengthen communication and disseminate the benefits of rooftop solar power, encouraging organisations and individuals to invest and join hands with the community in responding to climate change, working towards the goal of building Ha Noi into a green, smart, and modern city.
