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Determine Optimal Energy Project for 10% ROI Target

Last updated: Mar 29, 2026

Quick Overview

This question evaluates financial modeling, ROI calculation, cost and production trade-off analysis, scenario planning, and concise stakeholder communication within an energy investment context, framed for the Analytics & Experimentation category and a Data Scientist role.

  • medium
  • Snapchat
  • Analytics & Experimentation
  • Data Scientist

Determine Optimal Energy Project for 10% ROI Target

Company: Snapchat

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: medium

Interview Round: Onsite

##### Scenario An energy company is evaluating investments in new renewable projects and must hit a 10% annual return on investment (ROI). Fixed and variable costs differ between solar and a second technology with $30/MWh variable cost. ##### Question What qualitative and quantitative factors would you consider when selecting a new energy project? 2. If the target is a 10% annual ROI, how many MWh must be produced each year to reach it? (Expected: 6.25 MWh × 10^ 6) 3. Production is capped at 5 MWh × 10^6 per year. What actions could still deliver a 10% annual ROI? 4. Two options exist: (a) Solar with zero variable cost, (b) Alternative technology with $30/MWh variable cost. For each, calculate years to breakeven; both should be ~2.5 years. Show your math. 5. Which option would you recommend and why? 6. In 30 seconds, summarize your analysis and recommendation to senior management. ##### Hints Apply ROI = (annual profit) / initial investment. Factor in price per MWh, cap-ex, opex, subsidies, risk, scalability, and regulatory constraints.

Quick Answer: This question evaluates financial modeling, ROI calculation, cost and production trade-off analysis, scenario planning, and concise stakeholder communication within an energy investment context, framed for the Analytics & Experimentation category and a Data Scientist role.

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Snapchat
Jul 12, 2025, 6:59 PM
Data Scientist
Onsite
Analytics & Experimentation
93
0

Investment Selection and ROI Sizing for a New Renewable Project

Scenario

An energy company is evaluating investments in new renewable projects and must hit a 10% annual return on investment (ROI). Fixed and variable costs differ between two technologies:

  • (a) Solar with zero variable cost
  • (b) An alternative technology with a $30/MWh variable cost

To make the questions concrete and internally consistent with the provided “expected” answers, assume the following for calculations:

  • Market price for electricity (P): $40/MWh
  • Annual fixed O&M (F): $12.5 million
  • Corporate capital allocated to a representative project (I): $500 million (for Q-sizing in part 2)
  • Annual production cap (Q_max): 5.0 × 10^6 MWh (5 TWh)
  • Variable costs: solar v = 0/MWh;alternativev=0/MWh; alternative v = 0/MWh;alternativev= 30/MWh

Questions

  1. What qualitative and quantitative factors would you consider when selecting a new energy project?
  2. If the target is a 10% annual ROI, how many MWh must be produced each year to reach it? (Expected: 6.25 × 10^6 MWh)
  3. Production is capped at 5.0 × 10^6 MWh per year. What actions could still deliver a 10% annual ROI?
  4. Two options exist:
    • (a) Solar with zero variable cost
    • (b) Alternative technology with $30/MWh variable cost For each, calculate years to breakeven; both should be approximately 2.5 years. Show your math.
  5. Which option would you recommend and why?
  6. In 30 seconds, summarize your analysis and recommendation to senior management.

Hints

Use ROI = (annual profit) / (initial investment). Factor in price per MWh, capex, opex, subsidies, risk, scalability, and regulatory constraints.

Solution

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