--- title: "Appraisal aspects of a hydropower project" subject: "Project Engineering" chapter: 2 key: "semester_7/project_engineering:appraisal-aspects-hydropower" source: https://www.bctengineer.com/q/semester_7/project_engineering/appraisal-aspects-hydropower site: BCT Engineering --- # Appraisal aspects of a hydropower project Project Engineering · Chapter 2: Project Appraisal and Project Formulation - Asked in: 2075 Chaitra, 2+6 marks - Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14 - Page: https://www.bctengineer.com/q/semester_7/project_engineering/appraisal-aspects-hydropower - Whole chapter: https://www.bctengineer.com/md/semester_7/project_engineering/chapter-2 ## Question Why is project appraisal necessary for initiating a project? What are the major aspects that need to be considered for carrying out the appraisal of a hydropower project? Discuss. ## Short answer Appraisal is necessary to decide go or no-go, avoid wasting capital, compare alternatives, identify risks early, and give lenders confidence. For hydropower, appraise technical aspects (hydrology, geology, design), economic and financial viability, market, management, environmental and social impacts, legal issues, and risks. ## Answer **Project appraisal** is the critical, systematic assessment of a proposed project, before commitment of funds, to judge whether it is technically sound, economically and financially viable, environmentally and socially acceptable, and worth undertaking. #### Necessity of appraisal - Helps decide whether to accept, modify or reject a project (go or no-go). - Avoids wasting scarce capital on unviable projects. - Compares alternatives and ranks projects for limited funds. - Finds risks and weaknesses early, when changes are cheap. - Checks that technical design, cost and schedule are realistic. - Ensures economic benefit to the nation and acceptable environmental and social effects. - Gives lenders and donors confidence; usually a condition for financing. - Provides a baseline for later monitoring and evaluation. #### Aspects for a hydropower project | Aspect | Points to examine | |---|---| | Technical | Hydrology (flow duration curve, design discharge), head, installed capacity, geology, headworks, tunnel, penstock, powerhouse, turbine type, transmission line | | Economic | EIRR, B/C and NPV, benefit of energy replacing imports, employment | | Financial | Capital cost, cost per kW, funding mix, loan terms, tariff or PPA rate, cash flow, IRR, payback | | Market | Power demand, evacuation, PPA with Nepal Electricity Authority, export possibility | | Management | Developer's capacity, construction and O and M organisation | | Environmental | IEE/EIA, minimum river flow, fish, forest, sediment, mitigation | | Social | Land acquisition, resettlement, local benefit sharing | | Legal | Survey and generation licence, Electricity Act, royalty, tax | | Risk | Hydrology, geology, flood, construction delay, price and foreign exchange risk | ## Check yourself The answer's key points as multiple-choice questions, with the correct option and why. 1. Which is the main reason appraisal is carried out before a hydropower project is started? A. To avoid the need for any environmental study B. To fix the tariff permanently for all projects C. To replace the detailed design stage D. To decide go or no-go and avoid wasting scarce capital on an unviable project Answer: D. Appraisal lets the decision-maker accept, modify or reject the project before capital is spent. (Key point: Why appraisal is necessary) 2. Which of these is examined under the technical aspect of a hydropower appraisal? A. Foreign exchange risk and tariff rate B. EIRR and benefit of replacing imports C. Resettlement and local benefit sharing D. Flow duration curve, design discharge, head and installed capacity Answer: D. Hydrology, head, capacity, geology and structures are technical items; the others belong to economic, social and financial/risk aspects. (Key point: Technical aspect) 3. Which point falls under the market aspect of a hydropower project? A. Power demand, evacuation and a PPA with Nepal Electricity Authority B. Survey and generation licence C. Minimum river flow and fish D. Loan terms and payback Answer: A. Market covers demand, evacuation, PPA and export possibility. (Key point: Market aspect) 4. Under which aspect are the minimum river flow, fish, forest and sediment examined? A. Environmental B. Management C. Legal D. Financial Answer: A. These are environmental issues handled through IEE/EIA and mitigation; licence, royalty and tax are legal. (Key point: Environmental vs legal aspect) ## Close variants set in other exams - [Necessity and aspects of project appraisal](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Awhy-appraisal-necessary-aspects) — Project Engineering, chapter 2, asked 4× ## Related in Project Engineering - [Appraisal aspects; proposal contents (technical, financial)](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Aappraisal-aspects-proposal-contents) — Project Engineering, chapter 2 - [Appraisal parameters for civil engineering project](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Aappraisal-parameters-civil-project) — Project Engineering, chapter 2 - [Comprehensive appraisal and need of proposal](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Aappraisal-necessary-comprehensive-proposal) — Project Engineering, chapter 2 - [Need of risk management; hydropower risk types](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Arisk-management-necessary-hydropower-types) — Project Engineering, chapter 5 - [Project appraisal and its importance](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Aappraisal-concept-importance) — Project Engineering, chapter 2 - [Step by step project appraisal process](https://www.bctengineer.com/question.md?key=semester_7%2Fproject_engineering%3Aappraisal-steps-process) — Project Engineering, chapter 2 ## Related in other subjects - [High dam hydropower project components](https://www.bctengineer.com/question.md?key=semester_8%2Fpower_plant_design%3Ahigh-dam-components) — Power Plant Design, chapter 3 - [Quartz significance for hydropower project](https://www.bctengineer.com/question.md?key=semester_4%2Fengineering_geology_ii%3Aquartz-hydropower-significance) — Engineering Geology II, chapter 1