Select Assignments
We are proud to have executed over 750+ assignments for a diverse clientele comprising corporate organisations, investors, project developers, lenders and financiers, manufacturers, EPC companies, public sector undertakings, research organisations, other consultants and various governmental, multi-lateral and international agencies.
Case Study | Technical Due Diligence
Project
- 422 MW Solar PV Portfolio – 21 Sites Across India
Assignment
Arbutus was engaged to conduct a comprehensive technical due diligence for a portfolio of solar PV projects totaling 422 MW across Telangana, Karnataka, and Punjab. The scope covered independent energy yield assessments (EYA), desk-based review of technical documentation, and performance evaluation through on-site inspections at twelve locations, including drone-based thermography, IV-curve tracing, and EL imaging
Outcome
The assessment provided a clear understanding of the technical health and performance of the portfolio. Arbutus identified key design, operational, and performance risks and recommended targeted mitigation measures across short-, medium-, and long-term horizons, enabling the client to make informed investment and asset management decisions.
Case Study | Technical Due Diligence
Project
- 2.5 GW Solar PV + 4 GWh BESS | 850 MW Power Supply Agreement
Assignment
Arbutus was engaged to assess a multi-GW hybrid renewable project supporting a large-scale clean energy procurement program. The scope included design validation, energy yield analysis, BESS configuration review, and grid integration readiness.
Outcome
The project was found technically feasible, with recommendations for phased development (300–500 MW), early procurement of long-lead components, and system design optimizations. Arbutus also emphasized the importance of battery sizing and dispatch strategy to ensure the PSA target is met with minimal deviation. The team further advised aligning execution with phased grid upgradation plans to enable timely evacuation and long-term grid stability.
Case Study | Advisory
Project
- DPR for 5 GW Solar-Wind Hybrid Projects with BESS
Assignment
Arbutus prepared a feasibility study and DPR for 5 GW of hybrid renewable capacity (4.4 GW Solar + 3.7 GW Wind + 3.3 GWh BESS) across nine districts in Karnataka. The assignment involved site screening, resource validation, energy yield modeling, BESS sizing for evening peak, and cost estimation based on utility and market rates.
Outcome
The DPR equips the state renewable energy agency to issue RFPs and oversee tendering for large-scale deployment. With optimized CUFs and tariff modeling, the project supports DISCOM procurement of clean energy and contributes to India’s 2030 and 2070 carbon reduction goals.
Case Study | Lender's Engineer
Project
- 100 MW solar PV projects across Karnataka, India, financed by State Bank of India.
Assignment
Arbutus served as the Lender’s Engineer for a 100 MW (5 × 20 MW) solar portfolio, supporting project monitoring and compliance for financial disbursement. The engagement covered design and documentation review, site inspections, construction oversight, and periodic operational assessments.
Outcome
Our independent oversight enabled early risk identification, milestone validation, and performance benchmarking. This ensured timely project execution and provided the lender with confidence in technical quality, contractual compliance, and funding decisions.
Case Study | Lender's Engineer
Project
Lender’s Independent Engineer, IREDA, across India
Assignment
Arbutus, empaneled with IREDA, acted as the Lender’s Engineer for renewable energy projects, providing independent oversight throughout construction and early operations. Our role included milestone verification, site inspections, and documentation review aligned with project contracts and financial agreements.
Outcome
Arbutus’s involvement ensured accurate validation of progress and technical compliance at each stage. Our independent reviews enabled the lender to make timely, risk-informed disbursement decisions with confidence in project quality and execution.
Case Study | Owner's Engineering
Project
Owners Engineering for 300 MWp, Phillipines
Assignment
Two utility-scale ground-mounted solar PV plants 177 MWp / 125 MWac and 125 MWp / 90 MWac
Arbutus Consultants was engaged as the Owner’s Engineer across two adjacent solar PV developments in Western Philippines, with roles spanning design review, quality oversight, and construction monitoring coordination. The engagement supported critical compliance with technical standards, permitting milestones, and construction targets from mid-2023 through mid 2025.
Outcome
Arbutus’s involvement ensured accurate validation of progress and technical compliance at each stage. Our independent reviews enabled the lender to make timely, risk-informed disbursement decisions with confidence in project quality and execution.
Case Study | QAQC
Project
In-Process Quality Control (IPQC) – 800 MW Solar Module Manufacturing, India
Assignment
Arbutus deployed a dedicated QA/QC team for 11 months to oversee in-process quality control (IPQC) across multiple production lines for a cumulative 800 MW of solar PV modules. The engagement included continuous on-site monitoring of critical manufacturing stages, including raw material traceability, lamination, EL testing, and flash testing, ensuring adherence to IEC standards and client specifications.
Outcome
Arbutus ensured consistent product quality, minimized batch-level defects, and facilitated compliant dispatches through real-time quality checks and daily reporting. Our presence enhanced vendor accountability and significantly de-risked the supply chain for downstream project execution.
This is just the beginning. More high-impact, high-performance project stories will be live soon — showcasing how Arbutus is powering clean energy transitions across continents.
From technical advisory and detailed design engineering to on-site testing, commissioning and quality assurance, we provide end-to-end support throughout the project lifecycle. Arbutus is your one-stop partner for advisory and engineering in clean energy and sustainability, delivering bankable outcomes and climate-resilient infrastructure that powers a sustainable future.
Why Arbutus?
From technical advisory and detailed design engineering to on-site testing, commissioning and quality assurance, we provide end-to-end support throughout the project lifecycle. Arbutus is your one-stop partner for advisory and engineering in clean energy and sustainability, delivering bankable outcomes and climate-resilient infrastructure that powers a sustainable future