Net Zero refers to a climate target in which greenhouse gas emissions are balanced by removals or absorption, so that the net amount becomes effectively zero. In the provided context, it appears as a central concept in long-term climate mitigation scenarios, especially those aiming to decarbonize the power sector by around 2050 and shift the energy system toward renewable sources. The IEA’s “2050 Net Zero Scenario” is described as a pathway in which roughly 90% of global electricity is supplied by renewables, mainly solar and wind, by 2050. Achieving this requires not only generation expansion but also supporting infrastructure such as grid expansion and digitalization, as well as wider deployment of storage technologies.
The context emphasizes that net zero is not determined by technology alone. While the technical feasibility of large-scale renewable energy deployment is viewed more optimistically than before, the main bottlenecks are said to be policy and investment. Governments would need to support grid upgrades, storage adoption, and workforce development. The text also notes that demand-side measures such as energy efficiency, building retrofits, industrial efficiency, and lifestyle changes are important for reducing energy demand itself. Carbon removal technologies such as DAC (direct air capture) are mentioned as potential future sources of negative emissions, but they are still presented as emerging rather than fully mature solutions. In this framing, net zero is a comprehensive climate objective combining emissions reduction, electrification, renewable energy expansion, and carbon removal.