The role of electricity sources plays a crucial part in determining the overall emissions of plug-in hybrid electric vehicles (PHEVs) and hybrid electric vehicles (HEVs), especially when PHEVs operate in electric mode. Here are some key points to consider:
Role of Electricity Source in Emissions
- Electricity Generation Emissions: When PHEVs and HEVs (to a lesser extent) use electricity from the grid, their emissions depend heavily on the source of that electricity. In areas where electricity is generated from cleaner sources like solar or wind, these vehicles can significantly reduce life cycle emissions compared to conventional vehicles. Conversely, in regions relying on coal or gas for electricity, the emissions reduction benefits are less pronounced.
- Fuel-Cycle Emissions: The emissions from electricity generation (such as CO2, SO2, and NOx) contribute to the overall fuel-cycle emissions of PHEVs. Studies show that increased use of PHEVs can lead to higher emissions from power plants, especially SO2, due to the increased demand on generators.
- Emissions Comparison: While PHEVs and HEVs both reduce emissions compared to conventional vehicles, PHEVs can offer more substantial emissions reductions when charged regularly and driven primarily in electric mode. However, if the grid is not clean, their life cycle emissions can be closer to those of HEVs.
- Lifetime Emissions: The emissions benefit of PHEVs can vary over their lifetime based on usage patterns and electricity sources. PHEVs generally have an advantage in reducing lifetime emissions compared to HEVs, especially when they are used frequently in electric mode.
In summary, the source of electricity is a critical factor in determining the emissions of PHEVs and HEVs, affecting the extent to which these vehicles contribute to environmental sustainability.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-role-does-electricity-source-play-in-the-emissions-of-phevs-and-hevs/
