Dong Nai Solar Feasibility: Planning, Grid and Site Due Diligence

For an industrial owner considering solar in Dong Nai, provincial planning information is a starting point for due diligence. It does not confirm that a particular roof, connection point or commercial structure is eligible to proceed. The project team needs a current evidence file for the actual site.

Establish the legal and physical site

Record the current address, administrative jurisdiction, roof or land rights and the parties that will own and operate the installation. Distinguish rooftop self-consumption from projects developed on land or for electricity sales. These choices affect which requirements the team must assess.

Use the applicable planning document

For any quoted capacity allocation or project list, retain the decision, relevant appendix, issue date and subsequent amendments. An old regional total does not demonstrate remaining development capacity. Confirm the relevance of each planning requirement to the proposed project type before relying on it in an investment memorandum.

Assess the actual connection

Regional transmission infrastructure or a count of substations cannot prove that a factory connection can accept the proposed plant. Review the site’s single-line diagram, transformer ratings, operating loads, protection, metering and expected export behaviour. Resolve connection requirements with the responsible electricity entity as applicable to the project.

Keep units explicit: DC PV capacity in kWp, AC power in kW, transformer apparent power in kVA or MVA and connection voltage in kV. Energy yield in kWh requires a site-specific resource and loss model.

Complete roof and load due diligence

• Available structural records and an assessment of the proposed mounting loads.
• Roof condition, waterproofing responsibility, shading and access constraints.
• Interval load data, operating shifts and production shutdowns.
• Existing generators, protection arrangements and required control interfaces.
• Construction, fire-safety and operating constraints applicable to the facility.

Separate verified facts from investment scenarios

State the source and date of resource, load and cost inputs. Treat unresolved permissions, grid conditions and commercial terms as open items. Do not infer a historic FIT entitlement or a common FIT expiry date for all projects. Revenue from electricity sales belongs in the investment case only when the project-specific eligibility and agreement are established.

Use the findings to define the EPC enquiry

The enquiry should identify the available evidence, technical boundaries, unresolved surveys and the decision required from each party. Obtain comparable proposals against this scope, with storage treated as a separate operating and integration option if required.

Regulatory basis for the project review

The review dated 26 October 2026 references Vietnam’s Electricity Law No. 61/2024/QH15 and Decree 58/2025/ND-CP, read with Decree 243/2026/ND-CP. The latter also amends Decree 57/2025/ND-CP on direct power purchase arrangements.

Confirm the applicable self-consumption or power-sale model, connection arrangement, notification or registration route, and any licensing requirements or exemptions for the actual project. Building, structural, environmental and fire-safety obligations require a separate project review. Zero-export control does not by itself establish regulatory compliance. Do not include a historic FIT, surplus-energy revenue or a subsidy in the base case without evidence of eligibility and the applicable agreement.

Prepare an engineering enquiry

Start with the industrial rooftop solar cost calculator and, where storage is required, the industrial BESS sizing and cost estimator. Submit the load data, roof information, electrical drawings and scope boundaries through QuangAnhcons’ enquiry form. A project quotation requires confirmation of the technical design, commercial scope and validity period.

Editorial review: 26 October 2026. This guide supports project preparation and estimate review; it is not a binding commercial quotation or project approval.