PracHub
QuestionsPremiumLearningGuidesInterview PrepCoaches
|Home/Analytics & Experimentation/Capital One

Calculate Minimum Energy for 10% ROI and Investment Approval

Last updated: Mar 29, 2026

Quick Overview

This question evaluates financial modeling and unit-economics competencies, including ROI calculation, cost-volume-profit reasoning, and capacity feasibility for a renewable energy project.

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

Calculate Minimum Energy for 10% ROI and Investment Approval

Company: Capital One

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: easy

Interview Round: Technical Screen

##### Scenario A proposed renewable plant has: avg output 1,000 kWh, max capacity 8.8 M kWh/yr; land lease $5 M/mo; fixed cost $25 M/yr; VC $20/kWh; selling price $40/kWh; initial investment $400 M; target ROI 10 %/yr. ##### Question a) What is the minimum annual energy (kWh) the plant must generate and sell to achieve a 10 % annual ROI? b) Based on that quantity relative to the 8.8 M kWh capacity, would you approve the investment? ##### Hints ROI = annual profit ÷ initial investment. Annual profit = (price−VC)*Q − fixed − lease. Solve for Q, then compare with capacity ceiling.

Quick Answer: This question evaluates financial modeling and unit-economics competencies, including ROI calculation, cost-volume-profit reasoning, and capacity feasibility for a renewable energy project.

Related Interview Questions

  • Analyze Subscription, Insurance, App, and Card Cases - Capital One (medium)
  • Diagnose Flight Delays and Burger Launch - Capital One (easy)
  • How should you renew or replace a show? - Capital One (medium)
  • How would you decide to cancel a TV show? - Capital One (easy)
  • Decide Which Show to Renew - Capital One (medium)
Capital One logo
Capital One
Jul 12, 2025, 6:59 PM
Data Scientist
Technical Screen
Analytics & Experimentation
60
0

Renewable Plant ROI and Capacity Feasibility

Context

You are evaluating whether a proposed renewable energy plant can achieve a 10% annual ROI, given its costs, prices, and capacity. Assume ROI is based on annual operating profit before taxes and depreciation.

Given

  • Selling price: $40 per kWh
  • Variable cost: $20 per kWh
  • Fixed operating cost: $25 million per year
  • Land lease: 5millionpermonth(i.e.,5 million per month (i.e., 5millionpermonth(i.e., 60 million per year)
  • Maximum annual capacity: 8.8 million kWh per year
  • Initial investment (capex): $400 million
  • Target ROI: 10% per year on the initial investment

(Note: The mention of “avg output 1,000 kWh” is inconsistent in units for a rate; use the stated annual capacity of 8.8 million kWh/year for feasibility.)

Questions

(a) What is the minimum annual energy (kWh) the plant must generate and sell to achieve a 10% annual ROI?

(b) Based on that quantity relative to the 8.8 million kWh/year capacity, would you approve the investment? Explain briefly.

Hint

ROI = annual profit ÷ initial investment. Annual profit = (price − variable cost) × Q − (fixed cost + annual lease). Solve for Q and compare with capacity.

Solution

Show

Comments (0)

Sign in to leave a comment

Loading comments...

Browse More Questions

More Analytics & Experimentation•More Capital One•More Data Scientist•Capital One Data Scientist•Capital One Analytics & Experimentation•Data Scientist Analytics & Experimentation
PracHub

Master your tech interviews with 7,500+ real questions from top companies.

Product

  • Questions
  • Learning Tracks
  • Interview Guides
  • Resources
  • Premium
  • For Universities
  • Student Access

Browse

  • By Company
  • By Role
  • By Category
  • Topic Hubs
  • SQL Questions
  • Compare Platforms
  • Discord Community

Support

  • support@prachub.com
  • (916) 541-4762

Legal

  • Privacy Policy
  • Terms of Service
  • About Us

© 2026 PracHub. All rights reserved.