The provided pie charts compare electricity units by fuel source in Denmark and Germany between 1978 and 1998.
Overall, it can be seen that total production of electricity in Denmark and Germany in 1978 was relatively the same amount, and became the equal amount in 1998. However, units of coal takes first placed in Denmark for two decades, and coal take first place in Germany together with natural gas. In contrast, nuclear power became the largest proportion in 1998.
The largest proportion of electricity units produced in Denmark in 1978 belong to coal which was 53 units. Followed by hydro power and natural gas that were the same number (15 units), and oil which took up only 7 units. Thus, all of the fuel source made up of a total production of 90 units. Nevertheless, the total units produced in Denmark in 1998 increased up of a total production of 160 units which the largest proportion belong to coal(122 units). Followed by hydro power(34 units), natural gas(2 units), and oil that had the same units as natural gas.