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110 Hydroelectric Power


Hydroelectricity is electricity generated by harnessing the power of water, this often involves releasing from a dam through turbines. 422 kilowatt hours of electricity is generated per person per year in the world from hydroelectric sources.

Data sources

The data used were sourced from the World Bank’s World Development Indicators 2005. The data on the proportion of all electricity production that is hydroelectric refer to the year 2002. Using this data, and multiplying it by the relevant territory’s value for total electricity production (in kilowatt hours), the total hydroelectricity per territory can be calculated. If this number is then divided by the total population of a territory, hydroelectricity per person in each territory is calculated. If there are no data available for a particular territory, then the rate per person for that region was assumed.

Click here to view detailed data source references

The source of the quote used on this poster was Info Niagara, a tourism website for the Niagara Falls and Niagara Region. The longer passage from which the quote was sourced reads: “ Water was first diverted from the Canadian side of the Niagara River for generating electricity in 1893. A small 2,200 kilowatt plant was built just above the Horseshoe Falls to power an electric railway between the communities of Queenston and Chippawa.” The quote was accessed in April 2006, from the website below:

Excel sheets

Below is an explanation of each of the columns in the excel file:

Column A = Unique numerical territory (see 001).

Column B = Region and territory names (see 001).

Column C = Region code (see 001).

Column D = The ISO 3 code, or ISO ALPHA-3 (see 001).

Column E = Hydroelectricity generated, in millions of kilowatt hours. This is calculated by multiplying hydropower generated per person in kilowatt hours (column F) by population in millions (column G) (E = F * G).

Column F = Hydroelectricity generated, in kilowatt hours per person. This is calculated by dividing hydroelectricity generated in millions of kilowatt hours (column H) by total population in millions (column G) (F = H/G). If there was no data for total hydroelectricity produced (column H) then the regional average for hydroelectric power per person (column F) was assumed.

Column G = Population in millions.

Column H = Hydroelectricity generated in millions of kilowatt hours. This data was calculated by multiplying the tot al energy produced by a territory with the proportion of all electricity generated that was from hydroelectric sources. Both of these values are in the raw data section of the spreadsheet. If there was no data provided for tot al energy then ‘..’ meaning missing data was recorded. If the data for the proportions of all electricity from different sources did not include hydropower, then it was assumed that the figure for hydropower was actually zero.