MEASUREMENTS OF ELECTRICITY
Electricity is measured in watts (named after the Scottish mechanical engineer James Watt). Shown in Table 6.1 are the units in common usage.
![tab6.1](/api/v2/epubs/9780273768128/files/images/c06t001.jpg)
Table 6.2 shows the approximate cost to generate power across a range of renewable energy sources.
Table 6.2 Cost of generating power
![tab6.2](/api/v2/epubs/9780273768128/files/images/c06t002.jpg)
Source: REN 21, Renewables 2011 Global Status Report
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