Article Per Year (5 Year)
p-Index From 2021 - 2026
0.778
P-Index
This Author published in this journals
All Journal Journal Zetroem International Journal of Industrial Engineering and Engineering Management Jurnal Ilmiah Multidisiplin Indonesia
Rendroyoko, Ignatius
Institut Teknologi PLN, Jakarta
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Physics

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Development of Alternative Energy Transition Scenarios for Electricity Utility Companies in 2045 Using the Scenario Planning Method: Imtihan, Najahul; Rendroyoko, Ignatius
International Journal of Industrial Engineering and Engineering Management Vol. 7 No. 1 (2025)
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/ijieem.v7i1.10125

Abstract

In implementing the energy transition, electricity utility companies must be able to carry out future planning to replace electricity infrastructure from a fossil energy-based generation system to clean energy generation and new renewable energy (NRE) to achieve Net Zero Emission (NZE) conditions by 2060. Term planning. What has often been done so far is to use forecasting methods, which are made by utilizing historical databases and using many assumptions about economic, social, and environmental conditions, as well as other factors that are easily changed and close to uncertainty. Therefore, planning methods must consider possible changes and uncertainties with several possible scenarios. Scenario planning is planning with a strategic approach that focuses on the process, involving finding optimal strategies for several scenarios that can occur, and this method helps deal with uncertainty. This paper explores the development of alternative scenarios that may occur in 2045, using scenario planning to help electricity utility companies capture opportunities and offset threats. It focuses on formulating broad and innovative strategies for the energy transition in the electricity business.
Development of Alternative Energy Transition Scenarios for Electricity Utility Companies in 2045 Using the Scenario Planning Method: Imtihan, Najahul; Rendroyoko, Ignatius
International Journal of Industrial Engineering and Engineering Management Vol. 7 No. 1 (2025)
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/ijieem.v7i1.10125

Abstract

In implementing the energy transition, electricity utility companies must be able to carry out future planning to replace electricity infrastructure from a fossil energy-based generation system to clean energy generation and new renewable energy (NRE) to achieve Net Zero Emission (NZE) conditions by 2060. Term planning. What has often been done so far is to use forecasting methods, which are made by utilizing historical databases and using many assumptions about economic, social, and environmental conditions, as well as other factors that are easily changed and close to uncertainty. Therefore, planning methods must consider possible changes and uncertainties with several possible scenarios. Scenario planning is planning with a strategic approach that focuses on the process, involving finding optimal strategies for several scenarios that can occur, and this method helps deal with uncertainty. This paper explores the development of alternative scenarios that may occur in 2045, using scenario planning to help electricity utility companies capture opportunities and offset threats. It focuses on formulating broad and innovative strategies for the energy transition in the electricity business.
Analysis of the Application of Co-Firing Using Sawdust–Coal on the Performance of PLTU 3 Banten Lontar Fandhi Afriansyah; Ignatius Rendroyoko
Jurnal Ilmiah Multidisiplin Indonesia (JIM-ID) Vol. 5 No. 03 (2026): Jurnal Ilmiah Multidisplin Indonesia (JIM-ID), March 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study analyzes the implementation of co-firing using sawdust in combination with coal at PLTU 3 Banten Lontar. The primary objective of this research is to evaluate the impact of co-firing application on power plant performance, thermal efficiency, exhaust gas emissions, and the cost of electricity production (BPP). The research method employed was an experimental approach, comparing 100% coal combustion with a fuel mixture consisting of 95% coal and 5% sawdust, conducted at PLTU Banten Lontar. The results indicate that the implementation of co-firing reveals a non-linear relationship between the 5% sawdust blending ratio and the composition of electrical energy generated. Furthermore, the application of co-firing reduced the cost of electricity production by IDR 46.45/kWh and successfully decreased CO₂, SO₂, and NOx emissions. Specifically, CO₂ emissions were reduced by 8.82%, SO₂ emissions decreased by 17.3%, and NOx emissions declined by 8.5%. The implications of this study suggest that co-firing can serve as a more environmentally friendly and cost-effective alternative for the power generation sector, with the potential for broader implementation in other coal-fired power plants across Indonesia.
Transforming Investment Structures in Capital-Intensive Electricity Utilities: A Managed Service Approach for CapEx-to-OpEx Transformation Ignatius Rendroyoko; Najahul Imtihan; Ishak Sinaga
ZETROEM Vol 8 No 2 (2026): ZETROEM
Publisher : Prodi Teknik Elektro Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/ztr.v8i2.8135

Abstract

Electric utilities operate in a capital-intensive environment characterized by substantial infrastructure investment requirements, long asset life cycles, regulated tariffs, and relatively stable financial returns. Increasing electricity demand and energy transition initiatives have intensified the need for alternative financing mechanisms that support infrastructure expansion while maintaining service reliability and affordability. This study evaluates the transformation of conventional Capital Expenditure (CapEx)-based investment structures into Operating Expenditure (OpEx)-based arrangements through managed service models in electricity utilities. Using a mixed-method explanatory case study and techno-economic analysis, the study examines managed service implementation for 160 kVA distribution transformers in Indonesia's electricity distribution sector. The analysis incorporates lifecycle cost evaluation, cash flow assessment, and financial indicators including Net Present Value (NPV) and Internal Rate of Return (IRR). The results show that the managed service model improves financial flexibility by replacing large upfront investments with predictable periodic payments and transferring operational risks to service providers. However, this flexibility is accompanied by an approximately 15% increase in lifecycle NPV compared with the conventional Total Expenditure (TOTEX) model. These findings demonstrate that managed services represent a viable alternative financing strategy for capital-intensive electricity utilities facing investment constraints
Co-Authors Fandhi Afriansyah Imtihan, Najahul Ishak Sinaga Najahul Imtihan