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Evaluate Energy One's Transition to Renewable Energy Sources

Last updated: Mar 29, 2026

Quick Overview

This question evaluates financial modeling, capacity planning, unit economics, and scenario/sensitivity analysis skills applied to an energy transition case, testing a data scientist’s ability to interpret costs, revenues, and policy constraints within an energy-sector context and is categorized under Analytics & Experimentation.

  • medium
  • Capital One
  • Analytics & Experimentation
  • Data Scientist

Evaluate Energy One's Transition to Renewable Energy Sources

Company: Capital One

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: medium

Interview Round: Onsite

##### Scenario Energy One is evaluating a move from fossil fuels to renewable power and must analyze financial feasibility, capacity limits and technology options. ##### Question What factors would you consider when evaluating Energy One's transition from fossil fuels to renewable power? 2. Given a fossil-fuel plant (8.8 M MWh/year capacity, $5 M monthly lease, $25 M yearly fixed cost, $20/MWh variable cost, $40/MWh revenue, $400 M initial investment), how many MWh are needed annually to recover 10 % of the initial investment? 2b. Does your calculated production volume make sense relative to the plant’s maximum capacity? Explain. 3. If government policy caps fossil-fuel generation at 5 M MWh/year, which alternative power sources should Energy One pursue and why? 3b. If no new power sources are added, what levers could keep profitability stable? 4a. Solar test plant: $12.5 M capex, 75 % sunny (150 k MWh), 25 % cloudy (50 k MWh), $0 variable cost, $40/MWh price. How many years to break even? 4b. Ethanol test plant: $2.5 M capex, 100 k MWh/year, $30/MWh variable cost, $40/MWh price. How many years to break even? 5. With no budget limit, which test plant would you recommend and why? ##### Hints State assumptions, apply break-even formulas, check capacity constraints, and articulate strategic trade-offs between cost, risk, and long-term profitability.

Quick Answer: This question evaluates financial modeling, capacity planning, unit economics, and scenario/sensitivity analysis skills applied to an energy transition case, testing a data scientist’s ability to interpret costs, revenues, and policy constraints within an energy-sector context and is categorized under Analytics & Experimentation.

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Capital One logo
Capital One
Jul 12, 2025, 6:59 PM
Data Scientist
Onsite
Analytics & Experimentation
59
0

Energy Transition Case: Feasibility, Capacity, and Options

Context (assumptions to interpret the case)

  • Treat $/MWh values as constant market prices (pre-tax, ignore financing, depreciation, and inflation unless asked).
  • Fixed costs occur annually; variable costs scale with MWh produced.
  • Capacity figures are annual maximums unless capped by policy.

Questions

  1. What factors would you consider when evaluating Energy One's transition from fossil fuels to renewable power?
  2. Fossil-fuel plant economics:
    • Max capacity: 8.8 million MWh/year
    • Lease: 5million/month(i.e.,5 million/month (i.e., 5million/month(i.e., 60 million/year)
    • Other fixed cost: $25 million/year
    • Variable cost: $20/MWh
    • Revenue (price): $40/MWh
    • Initial investment (capex): $400 million
    2a. How many MWh are needed annually to recover 10% of the initial investment through operating profit? 2b. Does your calculated production volume make sense relative to the plant’s maximum capacity? Explain.
  3. If government policy caps fossil-fuel generation at 5 million MWh/year, which alternative power sources should Energy One pursue and why?

3b. If no new power sources are added, what levers could keep profitability stable under the 5 million MWh cap?

  1. Test plants:
    • 4a. Solar test plant: 12.5millioncapex;production:7512.5 million capex; production: 75% sunny (150,000 MWh), 25% cloudy (50,000 MWh); variable cost 12.5millioncapex;production:75 0/MWh; price $40/MWh. How many years to break even?
    • 4b. Ethanol test plant: 2.5millioncapex;production100,000MWh/year;variablecost2.5 million capex; production 100,000 MWh/year; variable cost 2.5millioncapex;production100,000MWh/year;variablecost 30/MWh; price $40/MWh. How many years to break even?
  2. With no budget limit, which test plant would you recommend and why?

Solution

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