In the Eastern Economic Corridor (EEC) of Thailand, biopharmaceutical and automotive manufacturing enterprises not only face high electricity prices ranging from $0.21 to $0.25 per kWh (THB 7 to 8.5 per kWh,Based on the exchange rate of 1 USD ≈ 35 THB as of 2025), but also need to meet the 24/7 uninterrupted power supply meeting Good Manufacturing Practices (GMP) requirements. The HELIST integrated solar storage system uses solar power as the base load and energy storage for load regulation and backup power. During the day, the green electricity self-consumption rate exceeds 85%.And it seamlessly switches at night to ensure zero interruption of critical loads.
Challenges And Demand Points In The Thailand Business Market
1. High Electricity Costs
The electricity price in Thailand ranks among the top 20 globally, with a peak-valley price difference of 3-5 baht/kWh, and enterprise electricity costs account for more than 30% of operating expenses.
Case: A factory in Bangkok has annual electricity costs exceeding 20 million baht and urgently needs to reduce peak and fill valley loads.
2. Poor Power Supply Stability
The Thailand power grid is aging, and the enterprises in the industrial park experience an average of 3 to 5 power outages per year, with each outage causing losses of over 0.5 million baht.(production interruption + equipment damage).
Case: Roi Et Province chemical enterprise suffered raw material damage due to a 2-hour power outage, resulting in a loss of over 2 million baht (including raw material scrapping and production resumption costs).
3. Policy and ESG Pressure
Thailand’s “30-30” policy requires that renewable energy account for 30% by 2030, and enterprises need to achieve carbon emission reduction targets.
International carbon tariffs such as the EU CBAM have forced export-oriented enterprises to reduce carbon emissions.
4. Off-grid/Weak Grid Scenario
Remote areas such as border economic zones and agricultural processing zones have insufficient grid coverage and require independent power supply systems.
BCG and BOI Policy Benefits Interpretation
BCG Economic Policy Overview
The Thailand’s government has vigorously implemented the BCG (Bio-Circular-Green) green economic policy, aiming to promote sustainable development. Specific measures include:
- Encouraging the use of renewable energy: Through subsidies and technical support, enterprises are encouraged to shift to clean energy sources such as solar power.
- BOI Investment Incentives: For enterprises established in the EEC region that meet green energy standards, they can enjoy a variety of incentives such as corporate income tax reduction, land use rights benefits, and more.
Economic Policy Overview
The Thailand’s government has vigorously promoted the BCG (Bio-Circular-Green) green economic policy, aiming to promote sustainable development. Specific measures include:
Encouraging the use of renewable energy: through subsidies and technical support, enterprises are encouraged to shift to clean energy sources such as solar power.
If enterprises established in the Eastern Economic Corridor (EEC) of Thailand meet the green energy standards, they can enjoy various incentive policies such as corporate income tax reduction and land use rights preferential treatment.
Save up to 40% of investment costs
| Strategy Type | Main Advantage | The Practical Value Of Solar Energy Storage Projects |
| BOI Investment Promotion | Corporate income tax exemption for 3-13 years (BOI Enterprise Income Tax Relief: 3-13 years. For projects in A1+/A2 categories, the maximum period is 13 years. For ordinary projects, the maximum period is 8 years.) Tariff exemption for experts’ visas approved in 10 days | 10MW project can save over 30 million baht tax burden, inverter/battery and other core equipment zero tariff |
| BCG Green Certification | Carbon credit trading qualification, EEC park green electricity priority trading right, investment subsidy (up to 15%) | Annual carbon emission reduction of 700 tons, corresponding to 0.28 million baht in carbon credit income,and the competitiveness of European and American orders is increased by 30%. |
PS:The above data are only examples to make predictions, and the specific data should be based on the actual calculated data.
Saving up to 40% of investment costs(Including the combined calculation of equipment tariff exemptions, subsidies and tax incentives).
How to leverage the policy benefits?
HELIST’s integrated solution of energy storage and generation not only helps enterprises reduce their electricity costs, but also enables them to obtain the BOI certification and enjoy the following benefits:
- Tax reduction: Up to 8 years of exemption from corporate income tax.
- Land benefits: Enjoy preferential prices when purchasing or leasing land in the EEC region.
- Financing support: Priority access to low-interest loans provided by the government.
How Can Solar Storage Replace UPS + Generator?
Traditional factories usually rely on UPS (Uninterruptible Power Supply) and diesel generators to ensure the power supply for critical equipment. However, these methods have several drawbacks:
- The cost of UPS is high: The equipment purchase and maintenance expenses are high, and it can only provide power support for a short period of time.
- Diesel generators cause significant pollution: Not only are the operating costs high, but they also produce a large amount of carbon emissions, which does not meet environmental protection requirements.
In the traditional “uninterruptible power supply + diesel generator” architecture, the uninterruptible power supply is responsible for emergency switching within milliseconds but the battery life is less than 30 minutes. The diesel generator is responsible for long-term power supply but has a delayed response (30-60 seconds for startup). Both have the pain points of “connection failure + high operating costs”. The solar energy storage system achieves dual-function replacement through the collaborative design of “solar power generation + lithium battery storage + EMS(Energy Management System) intelligent control”.
The advantages of the HELIST solution
The solar-storage integrated system of HELIST replaces UPS and diesel generators in the following ways:
1. Solar power priority supply: Utilizing solar energy during the day, with an self-consumption rate of up to 85%+, significantly reducing electricity costs.
2. Energy storage system buffering: The energy storage system discharges during nighttime or peak hours to ensure continuous power supply, eliminating the need for additional backup power sources.
3. Millisecond-level seamless switching: The intelligent EMS platform provides real-time monitoring and automatic scheduling, ensuring millisecond-level switching to energy storage power supply in case of grid failures, guaranteeing zero interruption of critical loads.
Is Your Factory Suitable For Implementing The Integrated Solar-storage System?
Please provide the following information and we will provide you with an exclusive feasibility report within 48 hours:
1.Your City
2.Annual electricity consumption (kWh or MWh)
3.Main production hours (e.g. 9:00–18:00)
🔥Self-testing
1. Policy compliance self-test (satisfies 1 item)
- Plan to apply for BOI discount (especially for A1+/A2 projects).
- Located in the EEC park, needs to meet the 15% green power requirement.
- There is a demand for exports to Europe and America, and requires ESG / carbon emission reduction proof.
- Annual electricity expenditure exceeds 1 million Thai baht (with more significant subsidy income).
2. Power supply pain points self-test (priority adaptation for more than 2 items satisfied)
- There have been ≥2 power outages (including instantaneous outages) in the past 1 year.
- Core equipment (lyophilization machines, cold chain, quality inspection instruments) requires 24-hour uninterrupted power supply.
- Annual fines exceeding 500,000 baht due to unoptimized peak-valley power consumption (peak-valley arbitrage can be solved).
- The factory is located in the southern part of Thailand / border (in areas with poor grid stability).
3. Site conditions self-test (basic threshold)
- Roof area ≥ 5,000 square meters (or has idle space).
- Load-bearing ≥ 25kg/m2 of the roof is unobstructed (no tall buildings / trees around).
- Priority is to face south, and the grid connection capacity is ≥ 500kVA (PEA can be expanded, and we provide assistance).
4. Economic feasibility self-test
- The remaining operational life of the factory is ≥ 8 years (covering the current period + profit period).
- The initial investment can be borne (or requires financing support, we connect with local banks for low-interest loans).
🚫Not suitable for on-site (to avoid wasting time)
- The factory plans to relocate or close within 3 years.
- The roof is made of color steel panels and has been in use for over 15 years (not reinforced).
- The annual electricity consumption is less than 500,000 kilowatt-hours (small-scale projects receive less policy subsidies, and the payback period is > 6 years).
Why choose HELIST?
HELIST has been deeply engaged in the field of new energy for nearly 20 years, possessing over 50 patents related to solar energy and energy storage, as well as a 20-person R&D team. HELIST focuses on providing practical solar and energy storage technology solutions for EPC companies, developers, and factory owners in Southeast Asia:
1. A complete portfolio of solar and energy storage systems
Integrating high-reliability solar modules, inverters, LFP storage, PCS, etc., with self-developed EMS for unified scheduling and integration, ensuring efficient and coordinated operation of the system.
- HELIST Core Equipment Technical Specifications
| Name | Key Indicators |
| Solar | 25-year warranty, conversion efficiency of 23% or higher |
| Inverters | Possessing extremely fast charging and discharging capabilities |
| Storage | Cycle life: 10,000 times +, supports – Working conditions: 20℃ to 60℃ |
| PCS | Response time ≤ 10ms |
2. Configurable intelligent EMS platform
Supporting multiple national electricity pricing strategies such as Vietnam TOU, Thailand BOI, Malaysia AFA, and the Philippines microgrid, and providing green electricity production tracking and energy efficiency visualization to help achieve ESG goals.
3. Full-process technical empowerment
Offering solution design, electrical drawings, installation guidance, system commissioning, and operation and maintenance training to lower the local integration threshold.
4. Efficient response mechanism
The Chinese headquarters is only 2-4 hours away by flight from Southeast Asia, providing 7×12 remote technical support. In case of necessity, on-site support can be provided within 48 hours to ensure the smooth delivery of the project.
As Thailand’s emphasis on green energy and sustainable development continues to increase, the solar-storage integration system has become a crucial means for enterprises to reduce costs, increase efficiency, and fulfill their social responsibilities.
HELIST has extensive local experience and advanced technological platforms, and is committed to providing the most suitable solar-storage solutions for Thailand enterprises. Whether you are a biopharmaceutical factory, an automobile manufacturing plant, or any other high-energy-consuming enterprise, we will tailor the best solution for you, helping you easily cope with electricity price challenges and achieve a green transformation.
BOI Approval Submission Period (4-6 weeks)
《How to Apply for BOI Tax Exemption for Solar-Storage Projects in Thailand》
Required materials: Project energy-saving manual, system technical plan, ESG and BCG compatibility report, environmental impact assessment document.
Submit for BOI approval: Apply through the online system, select the corresponding preferential category.
Grid connection application: Submit the grid connection plan to Thailand Provincial Electricity Authority (PEA) and Metropolitan Electricity Authority (MEA) to obtain the grid connection license and net metering qualification.
Commissioning and certification: After the project is completed, pass the TISI test, obtain the BCG green logo, and enjoy continuous policy benefits.
Application for risk avoidance guide:
Select the correct BOI activity code: Solar energy is “Energy Saving Improvement”, energy storage is “A2 Manufacturing”. Incorrect selection will result in the tax exemption period being reduced from 8 years to 3 years.
Necessary materials: Energy-saving explanation form No. 78, TISI(Thai Industrial Standards Institute) certification report, BCG compliance analysis table.
Acceleration techniques: Cooperate with Thai institutions for development, extend the tax exemption period to 13 years, precedent of 45-day approval for Chinese enterprises in Roi Et Province.
FAQS
Q1:Is the Solar Storage System suitable for the hot and rainy climate of Thailand?
A: Fully adapted. HELIST’s solar modules have IP65 waterproof rating and high-temperature resistance (operating temperature: -20℃~60℃); LFP energy storage batteries adopt high-temperature heat dissipation design, with a capacity retention rate ≥ 90% at 45℃. The system has passed TISI certification and is suitable for Thailand’s tropical monsoon climate.
Q2:Can the system meet the 24-hour uninterrupted power supply requirements of a GMP factory?
A: Yes. The system adopts “solar power + energy storage + EMS intelligent control” design: ① Daytime self-consumption rate of green electricity ≥ 85%; ② Nighttime energy storage discharge with millisecond-level seamless switching; ③ Redundant design of energy storage system ≥ 20%, ensuring zero interruption of critical loads such as lyophilization machines and cold chains.
Q3:How long does the Solar Storage System last and how should it be maintained?
A: ① Service life: Solar modules have a 25-year warranty, LFP energy storage batteries have a cycle life of 10,000+ times (service life ≥ 15 years), and the overall system service life is 20 years; ② Maintenance: Regular inspection (once every 6 months) includes cleaning solar modules and testing battery performance. HELIST provides 7×12 remote technical support and on-site maintenance within 48 hours.
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