SEI Officially Completes 585 kWp Floating Solar Power Plant at Tambak Lorok, Semarang

Semarang (10/02/2026) — SEI has successfully completed the construction of a 585 kWp Floating Solar Power Plant at the Tambak Lorok Combined Cycle Power Plant (PLTGU) in Semarang, marking another important milestone in supporting Indonesia’s transition to renewable energy. The project was executed under an Engineering, Procurement, and Construction (EPC) contract with PLN Indonesia Geothermal and has now been officially handed over.

Designed to supply the PDCSTG 1 load in Block 1 of PLN Indonesia Power UBP Semarang, the floating solar power plant is expected to improve internal energy efficiency by providing auxiliary power for several critical facilities, including the Water Treatment Plant, Unit 1 Auxiliary System, Emergency System, Condenser Vacuum System, and control room lighting.

Construction took place between September and December 2025. Throughout the project, the SEI team successfully overcame several technical and operational challenges while maintaining the highest standards of quality and occupational safety.

One of the primary challenges involved ensuring occupational safety during installation on water, particularly under extreme weather conditions. To safeguard personnel and maintain compliance with safety regulations, all installation activities were suspended whenever heavy rainfall created unsafe working conditions.

Another major challenge was integrating the new system with an existing operational facility. As the project expanded an active system, the legacy infrastructure had to remain fully operational throughout the integration process. This required meticulous planning, greater technical precision, and a longer execution period than conventional rooftop or ground-mounted solar power plant installations.

Erwin Widodo, Electrical Engineer at PLN Indonesia Power UBP Semarang, expressed his appreciation for the collaboration and successful completion of the project.

“We highly appreciate SEI’s performance in successfully delivering this project. We hope the floating solar power plant will continue to operate safely and reliably in supporting the PDC Block 1 power supply, which requires a high level of stability,” he said.

Echoing this optimism, Yudistira Priatna, Project Manager at SEI, emphasized the company's commitment to advancing renewable energy development across Indonesia.

“Looking ahead, we hope SEI will continue to be entrusted with strategic renewable energy projects, including floating, rooftop, ground-mounted, and other clean energy developments. We remain committed to delivering reliable and sustainable energy solutions that contribute to Indonesia’s clean energy transition,” Yudistira said.

With the successful completion of this project, SEI continues to strengthen its position as a trusted partner in renewable energy infrastructure development. The achievement further demonstrates the company's capability to deliver complex engineering projects while reinforcing its commitment to supporting Indonesia's transition toward a cleaner, more sustainable energy future.

From Roof Tiles to Clean Energy: Time for Rooftops to Become a Resource

The “gentengnisasi” program launched by the government is not merely about improving housing quality. Beyond that, this initiative opens up massive opportunities to deliver clean energy solutions through the utilization of a Rooftop Solar Power System (PLST Atap). 

Stronger and more modern roof structures provide the ideal foundation for solar panel installations. This means that every rooftop now has the potential to transform into an efficient, sustainable, and independent source of electricity. 

PT Surya Energi Indotama has proven this potential through PLTS Atap installation implementations in the Batang region. This project demonstrates how the modernization of  building infrastructure can run in perfect harmony with the acceleration of the national energy transition.

By optimizing rooftop areas, rooftop solar systems deliver a range of strategic benefits : 

• Long-term energy cost efficiency
• Significant reduction in carbon emissions
• Enhanced property and building value
• Direct support towards national renewable energy targets

Energy transformation does not always have to start with massive utility-scale projects. Sometimes, great change begins right above our heads—from the very roofs of our buildings. 

PT Surya Energi Indotama remains firmly committed to delivering reliable and sustainable solar energy solutions for Indonesia.

Hosting Townhall Meeting, SEI Establishes 6 Strategic Pillars for RKAP 2026

Bandung (09/02/2026) – Kicking off the new year, SEI successfully hosted its 2026 Townhall Meeting. Held at SEI’s office, this event was attended by the Board of Directors, Executive Management, Senior Management, and all SEI employees with great enthusiasm.

This year’s Townhall serves as a crucial milestone for evaluating the company’s achievements throughout 2025, as well as refining operational strategies in order to boost productivity and achieve the ambitious targets set for 2026.

In their presentation, the Board of Directors shared the 2025 performance results, which serve as a solid foundation for the company’s future growth. Furthermore, the main focus of the event was to align all company divisions in enhancing operational effectiveness, ensuring that the 2026 Work Plan and Budget (WP&B) targets are achieved to their maximum potential. 

Serving as the organization’s compass for the upcoming year, SEI officially established its 6 Strategic Pillars, carrying the grand theme “Consistency and Collaboration for Better Achievements” : 

• Business Upscaled
• Product & Service Innovation
• Operational Excellence
• Business Process Transformation
• IT as a Business Driver
• Excellence in Human Capital * Performance Culture

During his presentation, SEI’s President Director, I Made Sandika Dwiantara, emphasized the vital importance of disciplined execution regarding the established plans.

 “Our Success is determined not only by a great strategy, but by our consistency in executing that plan and the strength of solid cross-divisional collaboration,” I Made Sandika asserted.

Armed with a steadfast commitment to consistency and collaboration, SEI remains highly optimistic that 2026 will elevate the company to even higher levels of achievement.

Consistency in Quality, SEI Retains ISO 9001:2015 Certification 

Bandung (05/02/2026) - SEI retains its commitment to managing quality standards of company operations. Through two days of audit activity in SEI office, the company officially declared that they successfully retained ISO 9001:2015 certification through surveillance auditing from the year before. 

ISO 9001:2015 is an international standard for Quality Management System. This standard assigns criteria for organizations to confirm that their product and service consistently meet customer needs and ensure continuous improvement. For SEI, this audit is not only an administrative routine but also an instrument for validating the management effectiveness amidst the dynamics of the renewable energy business.

The event commenced on the first day with an opening session, followed by document audits and field observations (04/02), which then continued onto the second day, concluding with the closing ceremony (05/02). This audit was led by Andri Prasetyo, an auditor from the international certification body, Worldwide Quality Assurance (WQA).

Some of the divisions that are involved in the audit process as an auditee, including 

• Quality Management Representative (QMR)
• Human Capital & Business Support (HCBS)
• Supply Chain Management (SCM)
• Commercial Sales 
• Quality Assurance / Quality Control (QA/QC)

Based on the audit result, Andri Prasetyo stated that no non-comformities were found in the implementation of SEI’s Quality Management System. However, auditors emphasize the importance of continuous improvement that is adapted to current business conditions.

In the report, Andri gave special appreciation to the shown progress of SEI. He points out that the input from the audit years before has been well implemented, especially through digitalization action.

“I highly appreciate that the feedback from the previous year has been addressed with tangible improvements. SEI has now digitized its operations through the internally developed SEI Office dashboard. This innovation significantly streamlines employees’ daily operations,” said Andri Prasetyo.

Responding to the positive results, SEI’s Director of Technical and Operations, Ridwan Kurnia, stated that this achievement is important momentum for the company to continue growing and strengthen these cross-collaborations.

“This is our time to thrive and work together with every element, driven by confidence we have in our quality, capabilities, and services,” stated Ridwan in the closing session.

But Ridwan is also giving criticism notes to all levels of management. He reminds that the action plan that has been designed after the audit doesn't stop at the level of documentation. 

“Do not let the action plan from these audit results be only a formality. We need to stay focused on the value creation. This standard should be the core in every process of our business," he said.

By retaining the ISO 9001:2015 certification, SEI further solidifies its position as a renewable energy pioneer that prioritizes professional governance and global standards.” 

Strengthening the Renewable Energy Ecosystem: SEI and Conalog Collaboration

Bandung (03/02/2026) – PT Surya Energi Indotama (SEI) has officially signed a Memorandum of Understanding (MoU) with Conalog, a technology expert company from South Korea. The signing was conducted by Khanestyo, the Acting Director of Marketing and Business Development of SEI, and Bokseong Oh, the Director of Conalog.

This collaboration is focused on exploring the potential for production, commercialization, and business development for Operation and Maintenance (O&M) solutions for Solar Power Plants (PLTS) by utilizing digital and wireless technology. Through this partnership, both companies are committed to combining their respective resources, capabilities, and expertise to advance the solar energy industry in Indonesia.

The main objective of this collaboration is to strengthen the capabilities of both parties in facing future energy industry challenges. With a strong spirit of partnership, the companies hope this cooperation will become a foundation for growing together, creating higher operational efficiency through technological innovation, and expanding the reach of the renewable energy market in Indonesia.

As an initial step and a concrete form of implementation of this agreement, both parties have conducted a Proof of Concept (PoC) regarding the application of the latest technology on SEI’s solar panels. Additionally, a training program was organized for the relevant technical teams. This step was taken to ensure knowledge transfer and the enhancement of human resource competencies in operating more optimal solar power plant maintenance.

Through this synergy, SEI and Conalog are optimistic about providing a significant contribution to the acceleration of the green energy transition in Indonesia through smart and sustainable technology solutions.

SEI Holds an Annual General Meeting of Shareholders and Approves the 2026 Work Plan and Budget (RKAP) Under the Motto “Consistency and Collaboration”

Bandung (January 30, 2026) – Entering the beginning of 2026, SEI successfully held the General Meeting of Shareholders for the Corporate Budget and Business Plan (RUPS RKAP) for the 2026 Fiscal Year. The meeting, which took place at the Len Office, serves as a significant milestone for SEI in strengthening its business ventures within the renewable energy sector under the main theme: "Consistency & Collaboration for Better Achievements."

The event was attended in person by major shareholders. Present at the meeting were the President Director of Len, Prof. Joga Dharma Setiawan, along with his management team, as well as the President Director of Eltran, Tuning Rudyati, and her management team.

From the company's internal perspective, the entire Board of Directors and Board of Commissioners of SEI were in full attendance to present strategic projections that will serve as the backbone of the company's operations throughout the year.

The primary focus of this GMS was the ratification of the 2026 RKAP document, which will act as the company's business compass. Beyond financial figures and revenue targets, the meeting also established Key Performance Indicators (KPIs) for the Board of Commissioners and the Board of Directors.

The establishment of these KPIs serves as a form of transparency and accountability in measuring leadership performance. With clear parameters, it is expected that every policy enacted will have a direct impact on healthy and sustainable corporate growth.

Through a strong spirit of collaboration, SEI aims to create new breakthroughs in a more competitive renewable energy sector.

SEI Establishes Strategic Partnership with Ampotech to Strengthen Energy Management and Sustainability Solutions

Bandung (January 26, 2026) - PT Surya Energi Indotama (SEI), a subsidiary of PT Len Industri (Persero) operating in the New and Renewable Energy sector, has officially established a strategic synergy with Ampotech Pte. Ltd. This collaboration was marked by the signing of a Memorandum of Understanding (MoU) regarding a strategic partnership in developing energy management solutions in Indonesia.

This collaboration aims to integrate the expertise of both parties in marketing solutions for energy conservation, energy efficiency, and Environmental, Social, and Governance (ESG)-based solutions. SEI, which has a strong track record in solar energy development in Indonesia, will synergize with Ampotech by utilizing energy management hardware and software technologies to provide added value for the industrial, commercial, and residential sectors.

Key points of the agreed collaboration include:

• System Integration: Testing and integrating Ampotech products with various other supporting applications.
• Joint Development: Developing joint marketing and publication materials to promote integrated energy efficiency solutions.
• Project Collaboration: Leveraging the extensive networks of both companies for strategic projects.
• Knowledge Sharing: Organizing joint training and workshops to strengthen understanding.

This partnership is a concrete step by the company to support the acceleration of the national energy transition. By combining SEI’s products with Ampotech’s automation and optimization solutions, it is expected that energy efficiency across various sectors can be achieved more optimally.

It is hoped that this MoU will serve as a strong foundation for both companies to explore more specific and definitive cooperation programs in the future. Driven by a spirit of innovation, SEI remains committed to providing sustainable clean energy solutions for a greener future for Indonesia.

Often Thought the Same: Here are the Differences Between Renewable Energy, Clean Energy, and Green Energy

Terms like renewable energy, clean energy, and green energy are becoming increasingly popular in daily conversation and global policy. However, many people still assume these three terms have the same meaning

In fact, technically, all three refer to different concepts. Understanding this difference is crucial so we do not get trapped by inaccurate "environmentally friendly" labels. This is because an energy source might be inexhaustible, yet its process could still leave an impact on the surrounding ecosystem.

In short, the fundamental difference lies in three pillars: where it comes from (Renewable), what its residue or waste is (Clean), and its overall environmental impact (Green).

To make it easier to understand, let's learn and analogize these three differences through a simple story:

1. Renewable Energy

Renewable energy is energy derived from natural resources that can be renewed naturally and continuously. This type of energy exists as a solution to depleting fossil fuel.

Imagine you have a magic tree in your yard. Every time a branch is picked for firewood, a new branch grows back instantly. You do not need to fear a fuel shortage because nature provides it endlessly

Examples: Heat from the Earth's core (Geothermal), Solar energy, Wind, Water (Hydropower), and even biomass (from agricultural or forest waste)

2. Clean Energy

Clean energy focuses on minimal negative impact on the environment. Its primary focus is on low or even zero carbon emissions, so it does not produce greenhouse gas air pollution (CO2 or methane)

Now, our focus shifts to the health of the household residents. We do not want black smoke billowing in the kitchen while cooking. Therefore, we use a sophisticated stove that emits no smoke at all. The kitchen air remains fresh and healthy

Examples:

• Solar energy: Converting sunlight into electricity without emissions
• Wind power: Generating electricity through wind turbines without burning fossil fuels.
• Geothermal: Utilizing heat from inside the earth with very low emissions
• Nuclear Energy: Nuclear does not produce smoke that damages the ozone layer, but its fuel (uranium) is limited. So, it is clean, but not always renewable.

3. Green Energy

Green energy is the highest rank in this hierarchy. This energy is not only clean and renewable but also comes from natural processes that strictly preserve the ecosystem, without polluting soil or water, or leaving dangerous waste.

It is not just that the materials never run out and are smoke-free, but the way they are obtained must follow "the rules". We would not want to install a stove if it meant displacing a bird's nest or cutting down a protective tree.

Examples: Sunlight (Solar) and Wind. Both are available continuously (Renewable), smoke-free (Clean), and do not damage soil or water (Green).

What are the more specific differences? Here is a quick guide to distinguish them:

• Renewable Energy: Talks about Resilience (Will the energy run out?)
• Clean Energy: Talks about Air Health (Is there pollution or carbon smoke?)
• Green Energy: Talks about Nature's Well-being (Does the process damage the ecosystem?)

The key point is that all green energy is definitely renewable and clean. However, clean energy is not necessarily renewable (such as nuclear), and renewable energy is not necessarily fully green.

References:

National Geographic: An Explanation of Renewable Energy.

Energy.gov (U.S. Department of Energy): The Clean Energy Perspective.

Green Mountain Energy: The Difference Between Green Energy, Renewable Energy, and Clean Energy.Gosustain: The Difference Between Renewable Energy, Green Energy, and Clean Energy

SEI Collects 1,000 Seedlings for Environmental Sustainability through the  “SEI Hijaukan Bumi” Program

Bandung (16/12/2025) – SEI has once again launched the program titled 'SEI Hijaukan Bumi' (SEI Greens the Earth) as part of the company's anniversary celebration. This program represents SEI's commitment to inviting all stakeholders to actively contribute to environmental preservation.

Now in its second year, this tree-planting event held at the Biodiversity Park in Cibiru, Bandung has replaced the tradition of sending floral arrangements, which is customary during company anniversary celebrations.

Through this program, SEI encourages stakeholders to turn their well-wishes into a more meaningful form of support by providing plant seedlings that offer long-term benefits for the planet.

I Made Sandika Dwiantara, President Director of PT Surya Energi Indotama, expressed his appreciation and extended an invitation to all stakeholders at this event.

“The activities we’re doing here (planting trees) may seem like a small step, but if we all work together, it will have a significant impact on the future,”

Supports for this program have come from various stakeholders, including PT Len Industri (Persero), PT Len Inovasi Teknologi, PT Len Railway Systems, PT Len Telekomunikasi Indonesia, PT Eltran Indonesia, Morede Law Firm, PT Khaimar Indo Freight, CV Alphamas Mandiri, as well as several banking institutions such as Bank BNI and Bank BTN.

The participation of these stakeholders made it to collect 1,000 tree seedlings of various species, including mango, damar, bungur, avocado, manglid, and mahogany. In the previous year’s implementation, the program successfully collected 1,870 tree seedlings of various species, such as manglid, gmelina, avocado, mango, and coffee, with a quantity not significantly different from this year’s collection results.

Syah Maula, manager of Taman Kehati Dinas Lingkungan hidup at Bandung City Environmental Agency (DLH), also expressed his appreciation for the initiative undertaken by SEI.

“The SEI ‘Green the Earth’ initiative is a small step we’re taking to make the world a better place. May SEI continue to be part of initiatives that care for the environment,”

Besides company employees, the event was also visited by stakeholders who got directly involved in planting trees, as well as members of the media. The high level of enthusiasm among participants is clear evidence of the strong support for the eco-friendly initiative launched through the SEI Hijaukan Bumi program.

We protect Nature, Nature protects Us!"

18 Years of SEI: Celebrating with a Commitment to the Environment and the Community

Bandung (December 12, 2025) – SEI has officially reached its 18th anniversary. While 18 is often seen as a young age, SEI’s journey to this milestone has been a long process built on hard work, consistency, and an unwavering commitment to sustainability. From Sabang to Merauke, and from Nias to Rote, SEI continues to expand the reach and benefits of renewable energy across the nation.

The anniversary celebration took place at the company’s office in a simple, solemn, and warm atmosphere. The event was graced by the presence and remarks of SEI’s Board of Commissioners and Directors, alongside the Directors of its parent company, PT Len Industri (Persero), which added a deeper sense of togetherness to this year's festivities.

The ceremony began with a performance of the Tari Merak, a traditional dance from West Java. This was followed by a cake-cutting ceremony by the Board of Directors as a symbol of gratitude for SEI’s journey and achievements to date.

As a company dedicated to renewable energy, SEI reaffirmed its commitment to environmental sustainability through a symbolic handover of tree saplings. This initiative is part of the "SEI Hijaukan Bumi" (SEI Greening the Earth) program, which has replaced the tradition of sending flower boards with the donation of saplings as a tangible contribution to environmental preservation.

The celebration was a joy for all, featuring a lucky draw for employees. Furthermore, the company distributed donations to orphanages and presented awards to high-achieving children of employees as well as top-performing staff members in recognition of their dedication and excellence.

The solemnity of the event was enriched by a spiritual reflection from Ustaz Handy Bonny, followed by a lively and joyful stand-up comedy performance by guest star Guzman Sige. The festivities concluded with entertainment performances by and for the employees, serving as a symbol of the unity and solidarity within the SEI family. This entire series of events was made possible through the support of all stakeholders. SEI expresses its sincere appreciation and gratitude for this support and hopes that the synergy and strong relationships built can be further strengthened in the future.

With the spirit of "One Belief, One Vision," SEI is determined to move forward, upholding unity and a shared vision for the company’s sustainable progress.