Choosing the right business model is just as important as choosing the right solar partner. Thailand offers four main models.
Quick Comparison
| Factor | Self-Build (EPC) | EMC | Rooftop Lease | Wheeling |
|---|---|---|---|---|
| Upfront Cost | You pay | THB 0 | THB 0 | You pay |
| Who Owns | You | Solar Company | Solar Company | You |
| Revenue | 100% self-saving | 10-20% discount | Rental income | Sell to neighbor |
Model 1: Self-Build (EPC Turnkey)
Red Solar designs, supplies, and builds. You own it and keep all savings. Pros: Maximum ROI, 25-year warranty, tax deduction. Cons: Requires upfront capital (THB 15-36/W). Payback: 3-5 years.
Model 2: Energy Management Contract (EMC) ★ Most Popular
Red Solar invests, builds, operates. You buy at a discount. Pros: Zero upfront cost, immediate savings, zero risk. Cons: Lower total savings, 15-25 year contract.
Model 3: Rooftop Lease Model
You lease rooftop to Red Solar, earn rental income. Status in Thailand: Coming soon.
Model 4: Peer-to-Peer Solar Trading (Wheeling)
Sell excess solar to neighbors in the same industrial park. Status: Emerging model, regulatory framework developing.
How to Choose
Ask: Do you have capital? Want to own the asset? Is your rooftop idle? In an industrial park?
