Electricity costs in Thailand have risen in recent years, and many manufacturers, hotels and retailers want more control over what they pay. A private PPA offers one way to get it. Under this type of deal, a business buys power directly from a renewable energy developer, often from solar panels installed on its own rooftop or on nearby land.
Thai businesses also face pressure from export customers and investors to cut carbon emissions. A private power purchase agreement can help meet these targets while keeping energy bills more predictable.
However, signing a private PPA is a long-term legal commitment. Review these seven points before you sign.
- Contract Length
Most private PPAs in Thailand run for 10 to 25 years. Match the term to your business plans. Ask what happens if you relocate, expand or sell the site. A longer term usually secures a lower price, but it also limits flexibility.
- Pricing Structure
Check how the tariff is set. Common models include a fixed rate per kilowatt-hour, a rate with annual escalation, or a percentage discount on the grid tariff. Discount models follow changes in the Ft charge, so your savings move with grid prices. Run the numbers under several tariff scenarios before you agree.
- Regulatory Requirements
Thailand’s power sector is tightly regulated. Depending on system size, a project may need a generation licence from the Energy Regulatory Commission, a factory permit and building approvals from local authorities. Confirm which party obtains each permit and who pays if approvals are delayed. Rules for direct and third-party supply are still developing, so follow policy updates closely.
- Renewable Energy Sourcing
Confirm where your electricity comes from and how it is measured. If you plan to report emissions reductions, ask who owns the renewable energy certificates (RECs). Without them, you may not be able to claim the green attributes of the power you buy.
- Risk Allocation
A sound contract states who carries each risk. Look at equipment failure, underperformance, extreme weather and changes in law. Ask for a guaranteed minimum output and compensation if the system falls short. Check insurance cover and maintenance duties too.
- Exit Clauses
Plans change. Review the termination terms carefully. Find out the buyout price if you want to end the agreement early and what happens to the equipment at the end of the term. Some contracts transfer ownership of rooftop systems to the host at little or no cost.
- Grid Connection Rules
Most on-site systems stay connected to the grid for backup supply. Your local distribution utility must approve the connection, and technical standards apply to inverters and protection equipment. Ask about export limits, since selling surplus power back to the grid may be restricted. Check for any standby or backup charges as well.
Before You Sign
A private PPA can lower costs and cut emissions, but only with the right terms in place. Get independent legal and technical advice, compare offers from several developers and read every clause. Time spent on due diligence now protects your business for decades.
