The four pie charts illustrate information about five electricity generation sources in New Zealand and Germany over three decades.
Overall, In New Zealand the highest number of unit was observed in coal in both years, while petroleum and natural gas were used less. However, In Germany nuclear source generated the highest energy in 2010, electricity generation by natural gas dramatically dropped over the years.
In New Zealand, the number of units in hydro and natural gas were the same in 1980 and natural gas sharply fell reaching only 2 units. Hydro electricity energy slightly increased accounting for 46 units in 2010. Over two years, coal generation remained the highest unit and the number of unit showed almost tree times increase constituting 150 by the end of the year. Petrolium generation in the beginning was 11 units and this figure also went down the lowest number ( 2 units).
In Germany, althoug nuclear generation was 20, it dramatically serged reaching its biggest number units in 2010 (150 units). Petrolium also slightly ranged from 22 units to 27 units. Coal generation stayed the same pattern in both years (28 units). The use of water and natural gas sources sharply fell accounting for only 2 units.