T-VER Projects
400+
Carbon Tax 2028
200 THB/tCO2 (draft)
Current Credit Price
80-300 THB/tCO2
CARBON MARKET
Thai Carbon Market 2026 — Why Factory Owners Must Know Now
Your factory rooftop solar panels do more than cut electricity bills — they can generate additional revenue through carbon credits. Most factory owners are unaware of this opportunity. The Thailand Greenhouse Gas Management Organization (TGO), a government body under ONEP/MNRE, administers Thailand's voluntary carbon market through the T-VER program (Thailand Voluntary Emission Reduction Program). While the market is currently voluntary, Thailand's upcoming carbon tax (draft rate 200 THB/tCO2, scheduled 2028, subject to legislative approval) will create mandatory demand. Factories that register early lock in lower verification costs. By end of 2025, more than 400 T-VER projects were registered — up from roughly 200 in 2023. Solar is the fastest-growing project category. The Thai Cabinet has approved carbon credit futures trading on the Thailand exchange and a tokenization framework for easier liquidity. Register now — before prices rise as mandatory buyers enter the market. Read our comprehensive factory solar guide for background.
MECHANISM
How Factory Solar Generates Carbon Credits
EGAT Grid Emission Factor
0.4999 tCO2/MWh
The principle is simple: every kWh your solar system produces that displaces grid electricity avoids CO2 emissions. Those avoided emissions can be quantified and registered as carbon credits. EGAT's grid emission factor is 0.4999 tCO2/MWh (2024 published baseline). This is the conversion factor — each MWh of solar generation equals 0.4999 tonnes of CO2 avoided. Key point: this is ADDITIONAL revenue on top of electricity savings. Your solar system pays for itself through energy savings; carbon credits are a bonus income stream. Note: generation figures based on 1,300-1,500 kWh/kWp/year (central Thailand solar irradiance); revenue calculated at 80-300 THB/tCO2 price range. Calculate your factory's carbon credit potential
| System Size | Annual Generation (MWh) | Carbon Credits (tCO2/yr) | Revenue (THB/yr) |
|---|---|---|---|
| 500 kWp | 650-750 | 325-375 | 26,000-112,500 |
| 1 MWp | 1,300-1,500 | 650-750 | 52,000-225,000 |
| 3 MWp | 3,900-4,500 | 1,950-2,250 | 156,000-675,000 |
Carbon Credit Calculator
Calculate your factory's carbon credit potential
T-VER
T-VER Step-by-Step Registration — For Factory Solar
T-VER registration process written for factory owners, not carbon consultants. Total timeline from start to first credit issuance: approximately 18-24 months. Required documents: generation meter data, PEA/MEA grid connection agreement, electricity purchase receipts (proving displacement), and equipment specifications. Cost reality: PDD preparation plus verification fees typically 200,000-500,000 THB for a 1 MW project. This is recouped within 1-3 years of credit sales. Tip: factories with existing solar installations can register retroactively for the period since installation, subject to TGO methodology rules.
1
Prepare PDD (Project Design Document)
Prepare project description, select TGO-approved methodology for solar, baseline + additionality justification + monitoring plan. Timeline: 1-2 months.
2
Submit TGO Registration
Submit PDD + supporting documents to TGO. Officials review and may request clarifications. Timeline: 2-3 months for approval.
3
Monitoring Period
Collect solar generation data per approved monitoring plan. Use inverter/meter data logs. Minimum 1 year for first issuance.
4
Third-Party Verification
Hire a TGO-accredited DOE (Designated Operational Entity) to verify your monitoring report against the PDD. Timeline: 2-3 months.
5
Credit Issuance
TGO reviews verification report and issues T-VER credits to your registry account. Credits can be traded, sold, or retired.
Total Timeline
Total timeline: approximately 18-24 months
Estimated Cost
Cost: 200,000-500,000 THB (1 MW)
REVENUE
Carbon Credit Revenue — How Much Will Your Factory Earn?
Thai voluntary carbon credits (T-VER) trade at approximately 80-300 THB per tonne of CO2 (as of May 2026). Price depends on project type (solar commands mid-premium), credit vintage (newer = higher), buyer type, and volume. For a 1 MW system, carbon credits add 52,000-225,000 THB/year in revenue — equivalent to 1-3 months of additional electricity savings for free. If Thailand's carbon tax starts at 200 THB/tCO2 in 2028 (draft, subject to legislative approval), industrial buyers will need credits, potentially pushing prices to 200-500 THB/tCO2. Calculate your factory's carbon credit revenue
International Price Comparison
Gold Standard Solar
USD 5-15/tCO2 (~175-525 THB)
Verra VCS Solar
USD 3-10/tCO2 (~105-350 THB)
EU ETS (reference)
EUR 60-100/tCO2 (~2,280-3,800 THB)
25-Year Revenue Projections (THB)
| System Size | Conservative (80 THB/t) | Mid-range (150 THB/t) | Optimistic (300 THB/t) |
|---|---|---|---|
| 500 kWp | 650K | 1.2M | 2.4M |
| 1 MWp | 1.3M | 2.4M | 4.9M |
| 3 MWp | 3.9M | 7.3M | 14.6M |
Carbon Credit Revenue Calculator
Calculate your factory's carbon credit revenue
COMPARISON
T-VER vs International Standards — Gold Standard, Verra VCS, CDM
For most Thai factories, T-VER is the right starting point: lower cost, faster timeline, and the upcoming carbon tax creates domestic demand. Export factories needing international ESG credibility may consider Gold Standard dual-track later. Regarding double-counting: under Paris Agreement Article 6, T-VER credits used domestically stay in Thailand's NDC accounting. Internationally transferred credits require corresponding adjustment. Factory owners need not worry about this for domestic use. See more on ESG and CBAM compliance
4-Standard Carbon Credit Comparison
| Criterion | T-VER | Gold Standard | Verra VCS | CDM |
|---|---|---|---|---|
| Issuing body | TGO (Thai govt) | Gold Standard Foundation | Verra | UNFCCC |
| Market | Thai voluntary + future mandatory | International voluntary | International voluntary | Compliance (Kyoto) |
| Registration cost | Lower (200K-500K THB) | Higher (USD 15K-50K) | Higher (USD 10K-40K) | Highest |
| Credit price | 80-300 THB/tCO2 | USD 5-15/tCO2 | USD 3-10/tCO2 | Varies |
| Best for | Domestic Thai buyers, carbon tax compliance | Export factories needing international ESG credibility | Large-scale projects, international buyers | Legacy, mostly dormant |
| Timeline | 18-24 months | 24-36 months | 24-36 months | 36+ months |
Beyond carbon credits, factories targeting RE100 can also use I-REC certificates for RE100 compliance to verify renewable energy usage per GHG Protocol.
STACKING
Stack Carbon Credits with BOI + PPA Savings — Multiplied Returns
Factories installing solar get three distinct financial benefits simultaneously: (1) Energy savings — displacing grid electricity at ~3.95 THB/kWh (or PPA rate discount). (2) BOI tax incentive — 8-year CIT exemption under Category 7.1 + 0% import duty. (3) Carbon credit revenue — T-VER credit sales at 80-300 THB/tCO2. Key insight: carbon credits improve payback period by 2-6 months. Not massive on their own, but essentially free money on top of an already-positive investment. For export factories: add CBAM cost avoidance for a quadruple stack. Calculate your ROI with our solar calculator. See current electricity tariffs for reference. Check factory solar pricing for context. Analyze your bills with our bill analyzer
Worked Example: 1 MW System (Triple Benefits)
| Benefit | Annual (THB) | 25-Year (THB) |
|---|---|---|
| Electricity savings | ~5,100,000 | ~127,500,000 |
| BOI CIT exemption (8 years) | ~1,200,000/yr x 8yr | ~9,600,000 |
| Carbon credit revenue | 97,500-225,000 | 2,437,500-5,625,000 |
| Combined (Year 1-8) | ~6,400,000-6,525,000 | ~139,500,000-142,700,000 |
Carbon credits shorten payback by 2-6 months — free money on an already-profitable investment