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Hannah Ritchie, Max Roser


6th, 7th, 8th, 9th, 10th, 11th, 12th


Science, Social Studies, Economics, Geography, Mathematics

Resource Types

  • Interactive Media
  • Charts, Graphs, and Tables

Regional Focus



Microsoft Excel

Hydropower Generation

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  • This resource uses data to create an interactive chart, map, and table through which students can examine the amount of hydropower generated yearly (beginning in 1985) by countries around the world. 
  • In this interactive annual hydropower generation is measured in Terawatt-hours (TWh).
Teaching Tips


  • This interactive provides three different ways for students to explore data (chart, map, and table). Within these formats students can choose from a variety of options to focus in on specific datasets of their choosing.
  • Students may choose to view datasets for the world, one country, or create multiple line graphs to compare multiple countries. Students may also select the time range for the data set.
  • The resource includes links to several additional related graphs for students to explore.
  • The site explains how the data was collected.

Additional Prerequisites

  • There are multiple layers of data to explore and navigate. Teachers should familiarize themselves with the various capabilities of the interactive and notice the various ways to add and remove datasets to the table and chart. For instance, the chart can be viewed as world data or by individual country data. Selecting the "play" arrow at the bottom will show how the data has changed over time.
  • Because the interactive provides so many options for viewing the data, students may need to be provided with clear instructions as to which dataset they should explore.


  • This interactive could be used in a geography class as students explore the data in conjunction with reviewing geological sources of water that are used to generate hydropower.
  • As part of a science history lesson, this interactive could be used to explore the technological advancements that led to the increase in hydropower generation in some areas.
  • This interactive also lends itself to exploring ratios and percentages, so it could be used during math lessons.
  • Students or small groups could be assigned a country and explore how the country's data compares to the world data.

Scientist Notes

The resource shows annual hydropower generation from different countries. Students can explore to gain knowledge on the capacity each country has in generating hydropower efficiently. The resource is recommended for teaching.

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    • Algebraic Reasoning: Expressions and Equations (6-12)
      • 8.AEE.B.5 Graph proportional relationships in authentic contexts. Interpret the unit rate as the slope of the graph and compare two different proportional relationships represented in different ways.
    • Data Reasoning and Probability (9-12)
      • HS.DR.A.4 Use mathematical and statistical reasoning to formulate questions about data to evaluate conclusions and assess risks.
  • Science
    • ESS3: Earth and Human Activity
      • HS.ESS3.6 Use a computational representation to illustrate the relationships among Earth systems and how those relationships are being modified due to human activity (i.e., climate change).
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