Support for households installing rooftop solar and storage

Decree 58/2025/ND-CP contains a dedicated chapter on self-production, self-consumption rooftop solar that also applies to households, prioritising on-site use and encouraging storage. Decree 243/2026/ND-CP later amended related provisions.

• Household self-consumption systems are encouraged, with priority on using the energy locally.
• Installing battery storage and automatic control equipment is encouraged.
• Per moit.gov.vn, measures such as green credit or import duty exemptions for equipment may apply under the relevant rules.

MOIT has drafted and submitted for appraisal a decision on support policy for households installing self-production, self-consumption rooftop solar and storage systems. The support levels in that draft are indicative only until the document is issued.

• The draft proposes preferential loans through the Vietnam Bank for Social Policies of up to VND 40 million per household.
• Within that cap, the PV portion and the storage portion are treated separately by capacity and energy.
• The draft also mentions support from local budgets after the system is installed and operating.
• One target stated in the draft material concerns the share of offices and homes using self-consumption rooftop solar by 2030.

This is draft content published by MOIT for consultation and appraisal, not regulation in force. Households should not treat these loan or support levels as certain when deciding to invest.

Household economics depend almost entirely on the self-consumption ratio: energy used during sunshine hours replaces electricity billed at the applicable tiered tariff, while surplus without storage is worth far less.

• 3–5 kWp is the common range for a detached home, needing roughly 6 m² of roof per kWp.
• Shift large loads (washing machine, water pump, air conditioning) into sunshine hours to lift self-consumption.
• Storage enables evening use but raises capex; install it when evening bills are high or outages are frequent.
• With tiered residential tariffs, the savings are largest when the top tiers are cut first.

• Verify roof structure and waterproofing at every penetration.
• Require explicit equipment data: module and inverter models, battery capacity, warranty terms.
• Confirm the installer handles utility paperwork and hands over as-built documentation.
• Do not rely on absolute output guarantees; output varies with irradiation, orientation and shading.
• If storage may be added later, choose an inverter and switchboard that allow expansion.