3.7MW, Prachinburi (Phase 1: 999.00 kWp | Phase 2: 2.7MW)
Harvesting The Power Of Commercial Solar Energy and Green Branding With Power Purchase Agreements - No Expenses, Only Savings.
Capitalize On Your Commercial and Industrial Rooftop Space To Reach Your Sustainability, Energy, And Profitability Goals With Commercial Solar Systems.
Going Green Can Be Complicated For Factories. Simplify The Process With Constant Energy - The Renewable Energy Supplier To Handle It All.
Environmental, Social, and Corporate Governance are at the core of the principles applied at Constant Energy




Solar panels and Counting
Tons CO2-equivalent reduction
Total energy produced
Clients
Solar panels and Counting
Tons CO2-equivalent reduction
Total energy produced
Clients
Why Us
Zero Investment & Maintenance Costs
Discounts Off Your Electricity Prices
Savings On Electricity Bills From Day 1
No Resources Required
Benefits From Green Branding
Increases Your Asset Value

Schneider Electric
795 kWp
Hana Semi Conductor
999.96 kWp

About Us
Constant Energy is a rooftop solar power project developer and Independent Power Producer (IPP).
We have been running solar plants in SE Asia since 2012. We develop, design, finance, build, and own large solar rooftop power plants through the support of Feed-in-Tarrif and Corporate Power Purchase Agreements to provide the most advantageous commercial solar rooftop solutions to large businesses.
We operate in Asia with a primary focus on Southeast Asia. Our team is specialized and experienced with all expertise available in-house.
Save money and reduce your carbon footprint with no upfront cost.
Your Solar Energy Experts, Trusted By World Leading Companies - Bridging The Gap Between Industrial Electricity Needs And Sustainability.




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We are a Thailand-Based B2B supplier of reliable and energy-saving solar power solutions including industrial rooftop solar panels, solar farms, solar battery storage solutions, and energy asset management for Southeast Asia.
We produce clean renewable energy for our long-term clients, enabling them to reduce their carbon emissions and electricity bills, while increasing their profitability and freeing their time to focus on their core business activities.
Our Portfolio (Selected Projects)
Constant Energy's Solar Solutions Towards A Greener Future
If you were to invest in the costs of buying and installing solar rooftop panels for your factory, it would take you 6-10 years to break even and start making a return on your investment. That is without even considering the extra expense and hassle of construction companies to handle the installation.
With Constant Energy and its Fast Track Development Model, you can start maximizing your savings on electricity bills in as little as three months with zero investment, zero risks, and zero headaches. Some of our clients have enjoyed as much as 25% in savings after switching to solar.
Partnering with Constant Energy for your renewable energy needs gives you access to the best rooftop solar panels, battery storage, and energy asset management solutions in South-East Asia.
See what our clients are saying about us
Client testimonies on their experience with commercial rooftop solar panels installed and managed by Constant Energy. Join our customers and start your power-saving journey with solar PV systems.
Client Testimonials
Ampas Industries commits to reducing its carbon footprint for the better world by utilizing the solar energy technology. Constant Energy has been Ampas’ key partner along the journey to reach this commitment.
- Mr. Kanute Niruntasukkaru, Ampas Group
Constant Energy installed for Hana 3 solar rooftop systems of 1 megawatt each. 2 systems at our plants in Lamphun and 1 system in Ayutthaya. We are pleased with the installation of the rooftop solar projects and also the good professional working relationship with Constant Energy’s staff. Constant Energy’s proposal was the most competitive without Hana having to invest in the project.
- Terry Weir, Chief Finance Officer of Hana Microelectronics Group
Constant Energy has been Schneider’s partner for a long time on the solar energy. We believe in working with Constant Energy woulddeliver a successful and high-quality solar rooftop installation. The project we do with Constant Energy has been operating for 4 years now. Solar Energy can help us reducing electricity from the grid for 20% and reduce carbon emissions for 15%
- Chartchai Phothivorn, EHS Manager of Schneider Electric
We have solar rooftop projects with Constant Energy for 2 plants called MCL 3 and MCL 4. Solar energy hasimpact to the company because firstly it helps reducing the electricity cost, secondly it helps the company reducing carbon footprints. And it also helps improving company image. Working with Constant Energy went well and smoothly. We are very satisfied with the outcome.
- Tanakorn Petjan, Center of Engineering and Energy Manager of Magotteaux
Check how much you can save
with our interactive slider
Wondering how you can save more while remaining eco-friendly? You can save more than just money with Constant Energy. We offer solar power solutions that save you time, reduce your use of fossil fuels, and protect you from power outages. With renewable solar energy, you can power your operations for years to come. We install solar rooftop power plants for factories and large industrial operations with roof sizes of minimum 5000sqm.
1. Select your roof size ( sqm )
- 5,000
- 10,000
- 15,000
- 20,000
- 25,000
- 30,000
- 35,000
- 40,000
2. You Save
Savings per year (THB)*
Reduction of Carbon Emissions in Tons
Trees saved
*These savings are only an example. Actual savings depend on the demand profile of the off taker and the credit profile amongst other factors
Get A Quote Of Your Savings Today
Receive a quote for a Commercial Solar Power Purchase Agreement (PPA) for your factory or commercial project. Maximize your profits with Solar.
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Follow our CSR activities and see how you can contribute
Having a positive impact is integral to all of our core values. We know that getting as many large-scale factories to switch to renewable solar energy is a long-term game. It is important for us to do our part to give back and elevate our community in the short term.
Common Beliefs
Thanks to award-winning initiatives from the powerhouse at Constant Energy in their fight against Global Warming, our clients benefit from reduced electricity rates compared to other solar energy suppliers.
Not only does Constant Energy take care of all permits, construction, installations, and expenses tied to solar, they manage all your energy production, storage, and assets to increase your bottom line. This hands-off fast-tracked approach allows you to redirect your focus and energy where it matters most, taking care of your business, people, and clients.
By trusting Constant Energy to handle the entire installation process and management of your clean renewable energy, there are no expenses for you to budget, only savings guaranteed compared to your current electricity bill.
We cover the risks and expenses of installation in exchange for your long-term commitment to reducing your carbon footprint in partnership with us, in our common fight towards a more sustainable Earth.