Indonesia's Trusted Water
Resources Engineering
Consultant Since 1973
Beyond Technologies. For more than 50 years, we have
partnered with Indonesian government agencies and industries
to design, supervise, and certify water infrastructure — from
Southeast Asia's longest dam to nationwide hydropower plants.
PT.WECONisanengineeringconsultingfirmoperatinginthecivilconstructionsector,specializinginwaterresourcesengineering.FoundedbyRudolfFritsCharlesRatulangiin1973,andledsince2014byIr.HadiSantoso,MTasPresidentDirector.Overmorethan33yearsofactiveoperation,PT.WECONhasdelivereddamdesign,irrigation,hydropower,geology,andconstructionsupervisionprojectsacrossmultipleprovincesinIndonesia—includingtwonationalprojectspersonallyinauguratedbythePresidentoftheRepublicofIndonesia.
Our Featured Projects
Explore projects where precise engineering meets reliable execution — each one built to withstand real-world demands.
Semantok Dam
Nganjuk, East Java, Indonesia
Merangin Hydroelectric Power Plant 350 MW
Kerinci, Jambi, Indonesia
Ladongi Dam
East Kolaka, Southeast Sulawesi, Indonesia
Jlantah Dam
Indonesia
Semantok Dam
Nganjuk, East Java, Indonesia
Merangin Hydroelectric Power Plant 350 MW
Kerinci, Jambi, Indonesia
Ladongi Dam
East Kolaka, Southeast Sulawesi, Indonesia
Jlantah Dam
Indonesia
10 Years of Experience
Preparation and Operation Permit of Way Jepara and Way Rarem dam Lampung Province
Final Certification of Cibeet Dam Design Bogor Regency West Java Province
Review Design of Cijurey Dam Bogor Regency West Java Province
Certification and Seismic Study of Wairoro Dam North Maluku Province
Detailed Design of Cidanau Dam Part 2 West Java Province
Design Certification and Advance Geological Study Surumana Dam, Donggala Regency Central Sulawesi Province
Detailed Design of Cidanau Dam Part 1 West Java Province
Detailed Engineering Design of Ngibio Dam North Maluku Province
Performance assessment and Preparation Dam/Reservoir/Other Reservoir Riau Island
Potensial Study of Dam in West Sumatera
Feasibility Study Tohaki Reservoir Construction North Maluku Province
Advance Geological Study of Wuno Dam Sigi Regency Central Sulawesi Province
Review of Sukodono Reservoir Detailed Design in Gresik Regency Part II East Java Province
Detailed Engineering Design PLTM Mekarwangi (2x4,000 KW) Garut Regency East Java Province
Detailed Design of Wuno Dam In Sigi Regency Central Sulawesi Province
Building lasting relationships with every project
PT. WECON's supervision team was thorough and technically sharp. Their input during construction gave us confidence the dam would meet every safety requirement
Priya Verma
Real Estate Developer
Deep expertise across the sectors that matter
Technical Survey & Investigation
Comprehensive field data collection that forms the technical foundation for every design and permitting decision.
Engineering Design
Detailed engineering design and architectural planning for water and civil infrastructure, from concept through construction-ready drawings.
Construction Supervision & Project Management
Full-phase oversight to ensure projects are delivered safely, on schedule, and to certified engineering standards.
Geology, Mining & Digital Solutions
Specialized geological investigation paired with digital tools that support data-driven decision-making.
How we deliver every project
A proven four-phase methodology built for complex builds — from first brief to final handover, nothing is left to chance.
PHASE 01
Discovery & Site Assessment
Every project begins with data collection and field investigation — topographic, hydrological, and geotechnical surveys that define site conditions, risks, and design constraints before a single drawing is made.
Numbers speak for themselves
Built on decades of proven expertise, delivering precision engineering for Indonesia's most critical infrastructure projects.
50+
Water Infrastructure
Successfully designed and supervised across multiple regions.
2
National Strategic Projects
Directly inaugurated by the President of the Republic of Indonesia.
7
Provinces
Operating actively across 7 provinces in Indonesia.
10+
Awards & Certifications
Recognized for engineering excellence and quality standards.
Ready to build
something
that lasts?
Whether it's a residential project, commercial space, or renovation, we're here to bring your vision to life—with quality, clarity, and on-time delivery.
Let's talk about your goals
Fill out the form below and our nearest regional office will get back to you within 24 hours.