Analysis of Gross Regional Domestic Product (GRDP) of South Sumatra Province 2021–2025: Location Quotient, Shift Share, Input-Output, and Williamson Index Approaches

Andini Putri Rahesty; I Wayan  Suparta; Putri Asyiah  Rahmadita; Hidda Plasetya  Ramadhani; Dara Citra  Heryanti; Choirunnisa  Salsabila; Nanda Nisa  Kurnia; Yosa Salwa  Destasari

doi:10.63922/ijebir.v5i04.4730

Andini Putri Rahesty ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung
I Wayan Suparta Lecturer, Department of Development Economics, Faculty of Economics and Business, University of Lampung
Putri Asyiah Rahmadita ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung
Hidda Plasetya Ramadhani ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung
Dara Citra Heryanti ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung
Choirunnisa Salsabila ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung
Nanda Nisa Kurnia ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung
Yosa Salwa Destasari ¹Department of Development Economics, Faculty of Economics and Business, University of Lampung

DOI: https://doi.org/10.63922/ijebir.v5i04.4730

Keywords: GRDP, Location Quotient, Shift Share, Williamson Index, South Sumatra

Abstract

This study analyzes the economic development of South Sumatra Province during 2021–2025 using four regional analysis methods: Location Quotient (LQ), Shift Share, Input-Output (I-O), and the Williamson Index. Data were sourced from BPS South Sumatra Province and BPS RI, consistently using the Current Price basis (ADHB). The results indicate: (1) South Sumatra's GRDP grew from IDR 493.64 trillion (2021) to IDR 720.21 trillion (2025), with an average real growth rate of 4.85%; (2) LQ identifies six base sectors led by Mining (LQ=2.51); (3) Shift Share reveals that Mining has the highest differential shift (cij=IDR 30,762.36 billion); (4) The highest output multiplier belongs to Mining (1.75–1.86); (5) The Williamson Index (Vw) ranges from 0.508 to 0.630, categorizing inter-regional inequality as high, peaking in 2023, though showing a declining trend in 2024–2025. This study employs complete data from all 17 districts/cities of South Sumatra, providing a comprehensive representation of regional inequality.

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