India's Green Methanol standards, announced by the MNRE in March 2026, require Green Methanol to have an emission threshold of no more than 0.44 kg CO₂ equivalent per kg of methanol, calculated over a 12-month average. A common MCQ trap is assuming that *any* source of CO₂ used for methanol production automatically makes it "green." The MNRE's notification is specific: CO₂ for Green Methanol can be sourced from DAC, biogenic sources, or existing industrial sources, but only if the overall emission threshold is met. Simply using industrial CO₂ without meeting the threshold or from an unapproved source would not qualify.

Scaling up DAC to the gigatonne level required for climate targets faces significant practical hurdles:

• •High Cost: Currently, capturing one tonne of CO₂ using DAC is very expensive, often hundreds of dollars, making it commercially unviable without substantial subsidies or carbon pricing.
• •Energy Intensity: DAC is an energy-intensive process, especially for separating CO₂ from sorbents. For it to be truly carbon-negative, this energy must come from renewable sources, requiring massive renewable energy infrastructure.
• •Land and Water Footprint: Large-scale DAC facilities require substantial land for the capture equipment and associated renewable energy generation. Some processes also consume significant amounts of water, which can be a concern in water-stressed regions.
• •Infrastructure for Storage/Utilization: Once captured, the CO₂ needs to be either permanently stored underground (requiring vast geological storage sites and pipelines) or utilized, which also requires new industrial infrastructure.

India's approach to DAC involves a balanced perspective.

• •Arguments For:
• •Decarbonizing Hard-to-Abate Sectors: DAC provides a crucial pathway to produce green fuels like methanol, essential for decarbonizing sectors like shipping, aviation, and heavy industry where direct electrification is challenging.
• •Energy Security and Export Potential: By combining with Green Hydrogen, DAC can help India become a leader in green fuel production, enhancing energy security and creating export opportunities.
• •Addressing Legacy Emissions: It offers a tool to address historical CO₂ pollution, which is vital for long-term climate stability.
• •Arguments Against:
• •High Cost and Economic Viability: DAC is currently very expensive. Heavy investment might divert funds from more immediate and cost-effective emission reduction strategies.
• •Energy and Resource Demands: Scaling DAC would require immense renewable energy, land, and water, potentially competing with other critical sectors or leading to environmental trade-offs.
• •Moral Hazard: Some critics argue that focusing on DAC might create a "moral hazard," reducing the urgency to cut emissions at the source, as it offers a perceived technological fix.

The critical requirement for DAC to be truly "carbon-negative" is that the significant amount of energy it consumes must come from renewable sources. If DAC facilities are powered by fossil fuels, the CO₂ emissions from energy generation could potentially offset or even exceed the CO₂ captured from the air, rendering the entire process carbon-neutral or even carbon-positive, not carbon-negative. This is a frequent point of confusion because students often assume that simply capturing CO₂ makes a technology carbon-negative, overlooking the embedded emissions from its operational energy.

India's Green Methanol standards, announced by the MNRE in March 2026, require Green Methanol to have an emission threshold of no more than 0.44 kg CO₂ equivalent per kg of methanol, calculated over a 12-month average. A common MCQ trap is assuming that *any* source of CO₂ used for methanol production automatically makes it "green." The MNRE's notification is specific: CO₂ for Green Methanol can be sourced from DAC, biogenic sources, or existing industrial sources, but only if the overall emission threshold is met. Simply using industrial CO₂ without meeting the threshold or from an unapproved source would not qualify.

Scaling up DAC to the gigatonne level required for climate targets faces significant practical hurdles:

• •High Cost: Currently, capturing one tonne of CO₂ using DAC is very expensive, often hundreds of dollars, making it commercially unviable without substantial subsidies or carbon pricing.
• •Energy Intensity: DAC is an energy-intensive process, especially for separating CO₂ from sorbents. For it to be truly carbon-negative, this energy must come from renewable sources, requiring massive renewable energy infrastructure.
• •Land and Water Footprint: Large-scale DAC facilities require substantial land for the capture equipment and associated renewable energy generation. Some processes also consume significant amounts of water, which can be a concern in water-stressed regions.
• •Infrastructure for Storage/Utilization: Once captured, the CO₂ needs to be either permanently stored underground (requiring vast geological storage sites and pipelines) or utilized, which also requires new industrial infrastructure.

India's approach to DAC involves a balanced perspective.

• •Arguments For:
• •Decarbonizing Hard-to-Abate Sectors: DAC provides a crucial pathway to produce green fuels like methanol, essential for decarbonizing sectors like shipping, aviation, and heavy industry where direct electrification is challenging.
• •Energy Security and Export Potential: By combining with Green Hydrogen, DAC can help India become a leader in green fuel production, enhancing energy security and creating export opportunities.
• •Addressing Legacy Emissions: It offers a tool to address historical CO₂ pollution, which is vital for long-term climate stability.
• •Arguments Against:
• •High Cost and Economic Viability: DAC is currently very expensive. Heavy investment might divert funds from more immediate and cost-effective emission reduction strategies.
• •Energy and Resource Demands: Scaling DAC would require immense renewable energy, land, and water, potentially competing with other critical sectors or leading to environmental trade-offs.
• •Moral Hazard: Some critics argue that focusing on DAC might create a "moral hazard," reducing the urgency to cut emissions at the source, as it offers a perceived technological fix.

The critical requirement for DAC to be truly "carbon-negative" is that the significant amount of energy it consumes must come from renewable sources. If DAC facilities are powered by fossil fuels, the CO₂ emissions from energy generation could potentially offset or even exceed the CO₂ captured from the air, rendering the entire process carbon-neutral or even carbon-positive, not carbon-negative. This is a frequent point of confusion because students often assume that simply capturing CO₂ makes a technology carbon-negative, overlooking the embedded emissions from its operational energy.