We screen river basins to pinpoint viable hydropower opportunities and perform rapid reconnaissance to test cost-effectiveness. This includes desktop GIS analysis (topography, hydrology, land use, constraints), access and grid-connection checks, permitting/stakeholder context, and targeted walk-over surveys where appropriate. Deliverables include a ranked shortlist of sites, indicative layouts and capacities, preliminary energy and cost ranges (CAPEX/OPEX), key risks, and next-step recommendations. 

Typical duration: ~2 weeks (desktop review; site visit—if required—may extend).

We conduct early-stage assessments to estimate site potential (head/flow and indicative energy yield), develop preliminary cost ranges, and evaluate initial project feasibility. Our extensive map layers, hydro-meteorological datasets, and curated hydropower plant database strengthen the analysis and benchmarking. We also use SimPower* software for technical simulations to support screening decisions.

Typical duration: ~3 weeks (site visit—if required—may extend).

* EvaPower is discontinued and replaced with SimPower.

We prepare lender-ready feasibility studies covering hydrological analysis and energy yield, topographic/geotechnical surveys and site investigations, project layout and basic design options, grid interconnection and power evacuation, and CAPEX/OPEX cost estimates. Each study includes a financial evaluation (LCOE, IRR/NPV with sensitivities) and a concise risk and implementation plan, supporting a clear go/no-go decision. 

Typical duration: ~5 months.

We produce buildable designs across civil, hydraulic, structural, geotechnical, electromechanical, balance-of-plant, and grid-connection scopes. Deliverables include a Design Basis Report, engineering calculations and analyses (e.g., hydraulic transients/surge, stability, FEM as required), general arrangement and detailed drawings, Bills of Quantities with updated cost estimates, technical specifications and Employer’s Requirements, tender/bid documents, and 3D visualizations/artist's impressions. Our process integrates value engineering, constructability reviews, and compliance with relevant standards (e.g., SNI/IEC/IEEE) to support smooth procurement and construction.

Typical duration: ~4 months.

INDONESIA HYDRO™ GEOSURVEY delivers integrated survey and investigation programs to de-risk design and procurement. Scope typically includes:

• Topographic & bathymetric surveys: control network, UAV/LiDAR or total-station/GNSS, DTM/contours, river cross-sections.
• Geological & geotechnical: mapping, trial pits, boreholes/SPT, permeability tests, core logging, and accredited laboratory testing.
• Construction materials: quarry and borrow-area reconnaissance, aggregate/sand testing, haul/access assessments.
• Hydrological observations: stream-gauging and rating-curve development, rainfall and sediment monitoring, and data QA/QC.

Deliverables: Survey control report, DTM and drawings, factual & interpretive geotechnical reports, materials source evaluation, and a hydrology baseline summary for design inputs.

Typical durations: ~2 months for topographic/bathymetric surveys; ~3 months for geological & geotechnical investigations (subject to site scale, access, and weather).

We provide engineering support throughout procurement and the construction phase (Owner’s Engineer), ensuring quality, safety, schedule, and cost control.

• Procurement assistance: tender strategy, prequalification, BOQ/specs, bid documents & addenda, bidder Q&A/site visits, bid evaluation, and award recommendation.
• Construction-phase engineering: design clarifications, review/approval of shop drawings, method statements, ITPs/WPS, materials, and RFIs; assessment of variations/changes.
• Site supervision & QA/QC: resident or periodic supervision, inspections and test witnessing, quality audits, HSE conformance oversight, and progress reporting.
• Testing & commissioning: witness FAT/SAT, protection/SCADA setting verification, reliability run, and performance testing to taking-over.
• Contract administration & close-out: payment certification support, claims/time-extension assessments, punch lists, as-built and O&M review, and training/hand-over.

Typical duration: aligned with the construction period from contract award to taking-over.

Project Management
We deliver end-to-end project management (Owner’s Engineer/EPCM) aligned with PMBOK/ISO 21500—covering initiation and business case, planning and baseline setup (scope/WBS, schedule, cost, resources), execution and construction oversight, and monitoring & controlling (progress, quality, HSE, risk, change, interfaces), through to commissioning and close-out.

Scope includes: stakeholder and permitting coordination, procurement planning and contract administration, cost control and cash-flow, schedule management, QA/QC and HSE compliance, environmental & social safeguards, document control, and executive reporting with KPIs/dashboards.

Deliverables: Project Management Plan, baseline schedule and budget, risk and issues registers, procurement plan, monthly/weekly reports, change and interface logs, lessons-learned, and a final close-out report.

Typical duration: the full project development period, from early development to hand-over.

We provide comprehensive construction management to deliver safe, on-time, and on-budget projects while minimizing risk and disputes.

• Cost & cash-flow control: budget baselines, payment certification, trend/forecast reporting.
• Scope & change control: maintain scope definition, assess variations, manage interfaces.
• Schedule management: CPM baseline, look-ahead planning, progress tracking, recovery plans.
• Contract & procurement: packaging strategy, tendering support, contract administration, claims avoidance/resolution.
• Design & constructability: coordinate design clarifications, value engineering, method statements and temporary works reviews.
• Quality & HSE oversight: ITPs, inspections/test witnessing, non-conformance close-out, safety audits, toolbox monitoring.
• Stakeholder & permits: utility/owner coordination, permits, environmental & social safeguards compliance.
• Documentation & reporting: site records, dashboards/KPIs, executive reports, as-built and handover dossiers.

Typical duration: the full construction period, from site mobilization to taking-over.

Independent, lender/investor-grade review prior to investment, acquisition, financing, or partnership decisions. Scope typically includes:

• Data-room review & interviews with developer/contractors.
• Hydrology and energy yield check, losses and availability.
• Civil/E&M design review (layouts, equipment sizing, transients, grid interconnection).
• Geology and geotechnics (foundations, slope stability, materials sources).
• Schedule and constructability (method statements, access, logistics).
• CAPEX/OPEX benchmarking and contingency assessment.
• Permitting and E&S compliance (incl. AMDAL/IFC where applicable).
• Contracts overview (EPC, O&M, PPA) and key technical risks/clauses.
• Financial model inputs and sensitivity checks on technical assumptions.

Deliverables: red-flag report, risk register with mitigations, technical input sheet for the financial model, and a concluding independent opinion.

Typical duration: ~2 weeks for desktop diligence (site visit, if required, may extend the timeline).

Rapid, investment-focused reviews to determine whether a proposed project is attractive to pursue or bid.

Scope includes:

• Project definition & assumptions: location, scheme type, capacity, head/flow basis, grid access.
• Technical sanity check: layout, equipment sizing, interconnection concept, constructability.
• Energy and performance: indicative yield, losses, availability assumptions.
• Costs and economics: CAPEX/OPEX benchmarking, LCOE, tariff/PPA competitiveness, sensitivities.
• Schedule and delivery: milestone realism, procurement approach, contractor capability.
• Permitting and E&S: land status, AMDAL/ESIA readiness, key ESG risks.
• Commercial context: offtaker risk, PPA/EPC/O&M term highlights (where available).
• Risk assessment: red flags, mitigations, and conditions precedent.

Deliverables: concise investment memo (≈5–10 pages), evaluation scorecard, risk register, inputs for the financial model, and a clear go/no-go (with conditions if applicable).

Typical duration: ~2 weeks (desktop review; site visit—if required—may extend).

Independent, lender-grade evaluation of project “bankability” from a technical standpoint. We assess whether the scheme meets typical LTA expectations and can support financing.

Scope includes:

• Resource and yield: hydrology data quality, energy, losses, availability assumptions.
• Design maturity and standards: layout and equipment sizing vs. SNI/IEC/IEEE, codes compliance, safety.
• Constructability and schedule: access, methods, logistics, critical path realism, weather/seasonality.
• Grid interconnection: protection, SCADA, stability/transients, utility requirements.
• CAPEX/OPEX benchmarking: prudence of quantities/prices, spares, O&M strategy and reliability.
• E&S and permitting readiness: status vs. AMDAL/IFC/Equator-type expectations (technical interfaces).
• Contracts review (technical parts): EPC/O&M/PPA technical terms, guarantees, tests, LDs, interfaces.
• Risk analysis: technical risk register, mitigations, insurability, residual risks and contingencies.

Deliverables: a concise Bankability Report with an overall opinion/rating, conditions precedent and action plan, inputs for the financial model (yield, availability, costs), and a checklist aligned with lender expectations.

Typical duration: ~1 month for a single project (portfolio or site visits may extend the timeline).