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Industrial
Bangkok Industrial Park
Bangkok · 2024 · EPC
- Capacity
- 2.5 MW
- Annual generation
- 3,200 MWh
- Savings
- 35%
- CO₂ reduced/yr
- 1,920 tons
Why Solar
Why Thai Factories Get the Highest ROI From Solar
Thai factories combine high daytime load, expensive commercial tariffs (TOU peak rates exceed 4.5 THB/kWh), and large idle rooftops — three factors that make rooftop solar one of the most economically attractive investments in Southeast Asia. Payback compresses 2-3x faster than cold-climate, low-tariff peers like South Korea or Japan. Every CapSolar system is custom-engineered for the specific factory's real measured load profile — never templated.
1
Cut Bills 30-70% From Day One
Daytime solar production (8am-5pm) matches daytime industrial load — almost no battery needed, self-consumption hits 90%+, eliminating the most expensive TOU peak-tariff hours immediately. 3-shift factories see measurable savings on the first month's bill.
2
Payback 4-7 Years, 18 Years of Free Power
Real example: a 1 MWp factory invests 28-32M THB, saves 5-6M THB/year, and breaks even in 5-6 years. After that, 18-19 years of pure profit with average IRR 16-20% — many times better than bank deposits, and a guaranteed return uncorrelated with market volatility.
3
BOI: 3-8 Year Corporate Tax Holiday
Renewable energy projects qualify under BOI A1/A2 — up to 8 years corporate tax exemption, machinery import duty waiver, plus expedited Permit-to-Work clearance.
4
ESG, Net Zero, EU CBAM Compliant
Critical for export-oriented factories (auto parts, electronics, food). EU and US buyers are starting to require Scope 2 emissions reductions in procurement contracts from 2025-2026 onward. Solar is the most direct, auditable Scope 2 evidence available. CapSolar issues annual carbon emission certificates for customer CSR and ESG reports.
5
Monetize Unused Roof Space
The average Thai factory has 1,000-50,000 sqm of idle roof. Every 6 sqm = 1 kWp = ~1.4 MWh/year = ~5,500 THB/year of value — converting overhead into revenue.
Industries We Serve
Industries We Serve
CapSolar has installed solar for factories across diverse industrial sectors throughout Thailand — Bangkok, Chonburi, Rayong, Samut Prakan, Pathum Thani, Ayutthaya, and Chiang Mai. Every project is engineered for the unique load profile, roof structure, and operational hours of your facility. Our engineers survey the site and analyze 12 months of historical bill data before any design work begins.
Food & Beverage
500 kWp – 2 MWp
Chemicals
800 kWp – 3 MWp
Plastics
500 kWp – 1.5 MWp
Textiles
300 kWp – 1 MWp
Auto Parts
1 MWp – 5 MWp
Electronics
800 kWp – 3 MWp
Cold Chain Logistics
1 MWp – 4 MWp
Printing
200 kWp – 800 kWp
Warehousing
500 kWp – 5 MWp
Cement / Paper
1 MWp – 10 MWp
Financing Models
Three Models — Pick What Fits Your Factory
Not sure which fits? We provide a free analysis with ROI projection — see our full PPA vs. self-investment comparator. PPA vs self-invest comparator
Case Studies
Real Factory Projects in Thailand
Three sample industrial projects from our 150+ installations across 8+ provinces of Thailand.
ROI Example
ROI Example — 1 MW Factory
System size
1,000 kWp
Roof area used
~6,000 sqm
Investment (EPC)
~28-32M THB
Annual generation
~1,400 MWh
Annual savings
~5.2-6.0M THB
Payback
5-6 years
Assumptions: PEA TOU rate ~4.10 THB/kWh average, 16% capacity factor, no battery, full daytime self-consumption. Use our roof-area estimator and ROI calculator to tune assumptions to your factory. roof area estimator · ROI calculator
Want to calculate for your factory?
Try our ROI calculator — adjust system size, tariff, and daytime usage rate yourself.
BOI Incentives
BOI Incentives for Solar Investments
Renewable energy projects classified under BOI A1/A2 receive up to 8 years of corporate income tax exemption, machinery import duty waiver, and several other privileges that materially boost ROI. CapSolar's in-house BOI consulting team has handled 100+ applications and prepares all documents and BOI agency liaison free of charge for EPC customers — from eligibility analysis through filing to certificate issuance.
- ✓3-8 year corporate income tax exemption (per A1/A2 categorization)
- ✓Import duty exemption on solar machinery and equipment
- ✓Additional 50% deduction on installation costs (Section 35)
- ✓Expedited Permit-to-Work for clean energy projects
Check your factory's eligibility
Use our free BOI eligibility tool — runs in 60 seconds.
Check BOI Eligibility →How We Work
How We Work With You
From assessment to commissioning — typically 2-4 months for a 1-3 MW factory. Every project has a dedicated CapSolar Project Manager as a single point of contact, and customers receive weekly progress reports with photos and technical detail.
1
Site survey + bill analysis
1 week
2
System design + ROI projection
1-2 weeks
3
Quote + financing model selection
1 week
4
PEA/MEA permitting + BOI filing
4-8 weeks
5
Install + handover + ongoing O&M
4-12 weeks
End-to-end timeline: 2-4 months
FAQ
Factory Owner FAQ
The questions our sales team hears most often from factory owners and operations managers. If yours isn't here, contact our sales team directly.
Get Started
Start With a Free Assessment
CapSolar engineers will visit your site, analyze your electricity bills, and deliver a full ROI report within 1 week — no cost, no obligation.