1.3 Overall indicators
Over the long timeframe of the Strategy (to 2050), the delivery of sustainable, low emissions energy services will mean that New Zealand's sources of primary energy will either come from a greater proportion of renewable energy or, in the future, from sources for which carbon emissions can be captured and sequestered.
Graph 1 shows a long time series of the total amount of energy available for use in New Zealand for each calendar year to 2007. In 2007, 31% of the primary energy supply was from renewable sources. The supply was predominantly from non-renewable sources, particularly oil (38% of the total in 2007) and natural gas (23%).
Graph 1: Total Primary Energy Supply4
→ Full size version of Graph 1 [20 kB JPG]
Over time, the impact of the actions in the Strategy should result in a reduction in New Zealand's greenhouse gas emissions from energy, while maintaining a secure energy supply. The latest figures available are of New Zealand's emissions for the calendar year of 2007, which is the baseline year for this Strategy. Graph 2 shows there has been an upward trend in greenhouse gas emissions from energy from 1990 to the end of 2007. Reducing and ultimately reversing this trend, while maintaining security of supply, is the Strategy's overall goal.
Graph 2: NZ: Greenhouse gas emissions from energy (CO2 equivalent) 1990-20075
→ Full size version of Graph 2 [17 kB JPG]
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