Vietnam Directive Links Electricity Savings With Rooftop Solar Expansion
Vietnam is strengthening its approach to energy security through Directive 10/CT-TTg, issued by Prime Minister Pham Minh Chinh on 30 March 2026. The directive combines nationwide electricity‑saving measures with expanded deployment of rooftop solar systems. The policy aims to ensure a stable power supply for economic growth while reducing pressure on the national grid. Details of the directive were published by the Ministry of Industry and Trade, highlighting the need for coordinated action by ministries, local authorities, businesses and households.
The directive comes as Vietnam begins implementing its five‑year socio‑economic development plan for 2026–2030, which targets high economic growth and significantly higher electricity demand. Global energy markets remain volatile, increasing risks for countries reliant on imported fuels. Vietnam’s policy response emphasises domestic renewable energy, efficient electricity use and demand management to prevent supply‑demand imbalances, particularly between 2026 and 2028.
Combining demand management with distributed solar generation
Directive 10 links two strategies: reducing electricity consumption through efficiency measures and expanding rooftop solar systems designed primarily for self‑consumption. Authorities view this combination as a way to reduce peak demand, improve system reliability and limit the need for new large‑scale power plants.
The directive encourages installation of rooftop solar at government offices, businesses, service facilities and households. Systems may be paired with battery energy storage systems (BESS) to store surplus electricity and reduce pressure on the grid during peak hours. Local generation and storage are expected to improve system flexibility while strengthening national energy security.
The approach also aligns with Vietnam’s broader technological and infrastructure ambitions, which include expanding digital infrastructure such as the National Data Centre No.1 to support data‑driven governance and economic growth.
Falling solar costs improve investment viability
Ha Dang Son, Director of the Centre for Energy and Green Growth Research, noted that rooftop solar offers several advantages. It is relatively easy to install, produces clean electricity and can contribute to Vietnam’s climate commitments. Solar generation also tends to peak during hot weather when electricity demand for cooling increases.
“Điện mặt trời mái nhà có nhiều ưu điểm: là nguồn điện sạch, dễ lắp đặt, thời gian hoàn vốn đầu tư nhanh, đáp ứng các cam kết về khí hậu của Chính phủ Việt Nam.” — Hà Đăng Sơn, Giám đốc Trung tâm nghiên cứu Năng lượng và Tăng trưởng xanh
However, solar power generation depends on weather conditions and cannot be dispatched in the same way as conventional power plants. According to Son, large‑scale deployment without appropriate management could affect distribution grid stability and potentially lead to localised outages. Integrating battery storage would help regulate supply and provide reserve power when demand rises.
Technology costs have also declined significantly. Installation costs for solar systems are now around 40–50% lower than five years ago. As a result, projects that previously required about eight years to recover investment can now achieve payback in roughly five years, even in northern Vietnam where sunlight hours are lower than in the central and southern regions.
Policy signals aim to expand rooftop solar adoption
Le Khac Binh, Director of Greentech Central Joint Stock Company, said the directive reinforces rooftop solar as a long‑term development direction. Clear policy guidance and consistent government messaging, he noted, provide businesses with greater confidence to invest and expand services supporting solar deployment.
Electricity demand continues to rise, particularly in industrial zones and expanding urban areas. Compared with other forms of power generation that require longer construction timelines and higher capital investment, rooftop solar can be deployed relatively quickly and at comparatively lower cost.
Targets extend renewable energy to households and public offices
The directive sets an indicative objective for around 10% of public offices and 10% of households to install rooftop solar systems, or to reach roughly 20% of planned capacity during the 2026–2030 development period. Rather than concentrating renewable energy solely in large projects, the policy seeks to embed distributed generation across the wider economy.
Some major industrial enterprises are already adopting energy efficiency and on‑site generation measures. Energy‑intensive sectors such as steel, cement and construction materials have invested in technologies that reuse waste heat, implement energy management systems and deploy rooftop solar. For example, Hoa Phat Dung Quat Steel has achieved self‑sufficiency for roughly 90% of its electricity demand.
These initiatives illustrate how energy efficiency can function as an economic investment rather than a simple reduction in consumption. Many companies report electricity savings of 30–40% through technology upgrades and operational improvements.
From voluntary action to standard practice
A key objective of Directive 10 is to move energy conservation beyond isolated initiatives and establish it as a common operational standard across the economy. The directive introduces measurable requirements for sectors ranging from public offices and street lighting systems to industrial production and households, with accountability assigned to organisational leaders.
Implementation will be supported through measures including green credit policies, financial incentives and stricter energy efficiency standards. The government also plans to phase out outdated technologies such as high‑wattage incandescent bulbs. Together, these measures aim to ensure that energy efficiency becomes an economically rational choice for organisations and citizens alike.
The emphasis on distributed energy, efficiency and resilient infrastructure complements Vietnam’s wider development agenda, which includes investments in advanced technologies and innovation ecosystems as the country strengthens its position as a growing hub for artificial intelligence investment in Southeast Asia.
