Department of Environmental Protection


Air Quality, Energy & Sustainability

Drive Green

Progress: How much have we made? When will we meet our goals?

  1. Greenhouse gas emissions / 80x50 Report
  2. Sales of electric vehicles
  3. NAAQS: PM2.5, NOx, and other priority pollutants
  4. Black carbon as an emerging pollutant of concern

Superstorm Sandy

1. Greenhouse gas emissions / 80x50 Report

A statewide greenhouse gas (GHG) emissions inventory is a critical tool for tracking progress in reducing GHG emissions. The GHG inventory establishes historical emission trends and demonstrates the state's progress in achieving its emissions reduction goals, as required by New Jersey's Global Warming Response Act (GWRA) (P.L. 2007 c.112; P.L. 2018 c.197). The inventory includes estimates for carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases with high global warming potentials, along with estimates for carbon sequestration. NJDEP has completed an initial inventory of greenhouse gases. See here:

Transportation contributes 42% of greenhouse gas emissions, which are measured as million metric tons of CO2 equivalent or 97 MMTCO2e. This 40.6 MMT must be reduced substantially in order to meet our climate (and other) goals.

DEP will be revising the inventory as new data becomes available to help gauge our progress.

2. Sales of electric vehicles

Pilot projects to electrify classes of vehicles have been completed with funding from both government and the private sector. The results of these projects, including 17 new electric medium and heavy duty vehicles appear promising with few technical challenges. It will require a variety of policy and regulatory initiatives to fully electrify the total population of 500,000 vehicles registered in New Jersey.

Medium and Heavy Duty Goals

3. NAAQS: PM2.5, NOx and other priority pollutants

Converting medium- and heavy-duty vehicle fleets to electric vehicles will result in significant reductions of PM2.5 and NOx (which leads to reduced ground level ozone). Greening the MHDV fleet can result in as much as a 31% NOx reduction and a 5.6% PM2.5 reductions. Other priority pollutants can be expected to have much smaller emission reductions.

4. Black carbon as an emerging pollutant of concern

Black carbon emissions in the United States have declined substantially in the past 30 years, with large reductions in the onroad and nonroad diesel sectors. Emissions are projected to decline even further by 2030, largely due to controls on new mobile diesel emissions. In fact, most developed nations have already made significant progress in reducing emissions of black carbon and other direct sources of particulate matter. Further reductions are expected to occur over the next several decades as existing regulations are fully implemented.

Short and long-term exposures to PM2.5 are associated with a broad range of human health impacts, including respiratory and cardiovascular issues as well as premature death.

Black carbon is a short-lived climate pollutant with a lifetime of only days to weeks after release in the atmosphere. However, during this time, black carbon can have significant direct and indirect impacts on the climate, the cryosphere (snow and ice), agriculture and human health.


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