Will Trump’s America Crash Earth’s Climate?

Graph of US energy consumption by fuel, 1990 to 2050
US energy consumption by fuel, 1990 to 2050

Last week, the US Department of Energy (DOE) released its annual report projecting future US energy production and consumption and greenhouse gas (GHG) emissions.  This year’s report, entitled Annual Energy Outlook 2018, with Projections to 2050 forecasts a nightmare scenario of increasing fossil fuel use, increasing emissions, lackluster adoption of renewable energy options, and a failure to shift to electric vehicles, even by mid-century.

The graph above is copied from that DOE report.  The graph shows past and projected US energy consumption by fuel type.  The top line shows “petroleum and other liquids.”  This is predominantly crude oil products, with a minor contribution from “natural gas liquids.”  For our purposes, we can think of it as representing liquid fuels used in cars, trucks, planes, trains, and ships.  Note how the US DOE is projecting that in 2050 America’s consumption of these high-emission fuels will be approximately equal to levels today.

The next line down is natural gas.  This is used mostly for heating and for electricity generation.  Note how the DOE is projecting that consumption (i.e., combustion) of natural gas will be about one-third higher in 2050 than today.

Perhaps worst of all, coal combustion will be almost as high in 2050 as it is today.   No surprise, the DOE report (page 15) projects that US GHG emissions will be higher in 2050 than today.

Consumption of renewable energy will rise.  The DOE is projecting that in 2050 “other renewables”—essentially electricity from solar photovoltaic panels and wind turbines—will provide twice as much power as today.  But that will be only a fraction of the energy supplied by fossil fuels: oil, natural gas, and coal.

How can this be?  The world’s nations have committed, in Paris and elsewhere, to slash emissions by mid-century.  To keep global temperature increases below 2 degrees Celsius, industrial nations will have to cut emissions by half by 2050.  So what’s going on in America?

The DOE projections reveal that America’s most senior energy analysts and policymakers believe that US policies currently in place will fail to curb fossil fuel use and reduce GHG emissions.  The DOE report predicts, for example, that in 2050 electric vehicles will make up just a small fraction of the US auto fleet.  See the graph below.  Look closely and you’ll see the small green wedge representing electrical energy use in the transportation sector.  The graph also shows that the the consumption of fossil fuels—motor gasoline, diesel fuel, fuel oil, and jet fuel—will be nearly as high in 2050 as it is now.  This is important: The latest data from the top experts in the US government predict that, given current policies, the transition to electric vehicles will not happen.

The next graph, below, shows that electricity production from solar arrays will increase significantly.  But the projection is that the US will not install significant numbers of wind turbines, so long as current policies remain in force and current market conditions prevail.

The report projects (page 84) that in 2050 electricity generation from the combustion of coal and natural gas will be twice as high as generation from wind turbines and solar panels.

Clearly, this is all just a set of projections.  The citizens and governments of the United States can change this future.  And they probably will.  They can implement policies that dramatically accelerate the transition to electric cars, electric trains, energy-efficient buildings, and low-emission renewable energy.

But the point of this DOE report (and the point of this blog post) is that such policies are not yet in place.  In effect, the US DOE report should serve as a warning: continue as now and the US misses its emissions reduction commitments by miles, the Earth probably warms by 3 degrees or more, and we risk setting off a number of global climate feedbacks that could render huge swaths of the planet uninhabitable and kill hundreds of millions of people this century.

The house is on fire.  We can put it out.  But the US Department of Energy is telling us that, as of now, there are no effective plans to do so.

Perhaps step one is to remove the arsonist-in-chief.


If you’re for pipelines, what are you against?

Graph of Canadian greenhouse gas emissions, by sector, 2005 to 2039
Canadian greenhouse gas emissions, by sector, 2005 to 2030

As Alberta Premier Notley and BC Premier Horgan square off over the Kinder Morgan / Trans Mountain pipeline, as Alberta and then Saskatchewan move toward elections in which energy and pipelines may be important issues, and as Ottawa pushes forward with its climate plan, it’s worth taking a look at the pipeline debate.  Here are some facts that clarify this issue:

1.  Canada has committed to reduce its greenhouse gas (GHG) emissions by 30 percent (to 30 percent below 2005 levels by 2030).

2.  Oil production from the tar sands is projected to increase by almost 70 percent by 2030 (From 2.5 million barrels per day in 2015 to 4.2 million in 2030).

3.  Pipelines are needed in order to enable increased production, according to the Canadian Association of Petroleum Producers (CAPP) and many others.

4.  Planned expansion in the tar sands will significantly increase emissions from oil and gas production.  (see graph above and this government report)

5.  Because there’s an absolute limit on our 2030 emissions (515 million tonnes), if the oil and gas sector is to emit more, other sectors must emit less.  To put that another way, since we’re committed to a 30 percent reduction, if the tar sands sector reduces emissions by less than 30 percent—indeed if that sector instead increases emissions—other sectors must make cuts deeper than 30 percent.

The graph below uses the same data as the graph above—data from a recent report from the government of Canada.  This graph shows how planned increases in emissions from the Alberta tar sands will force very large reductions elsewhere in the Canadian economy.

Graph of emissions from the Canadian oil & gas sector vs. the rest of the economy, 2015 & 2030
Emissions from the Canadian oil & gas sector vs. the rest of the economy, 2015 & 2030

Let’s look at the logic one more time: new pipelines are needed to facilitate tarsands expansion; tarsands expansion will increase emissions; and an increase in emissions from the tarsands (rather than a 30 percent decrease) will force other sectors to cut emissions by much more than 30 percent.

But what sector or region or province will pick up the slack?  Has Alberta, for instance, checked with Ontario?  If Alberta (and Saskatchewan) cut emissions by less than 30 percent, or if they increase emissions, is Ontario prepared to make cuts larger than 30 percent?  Is Manitoba or Quebec?  If the oil and gas sector cuts by less, is the manufacturing sector prepared to cut by more?

To escape this dilemma, many will want to point to the large emission reductions possible from the electricity sector.  Sure, with very aggressive polices to move to near-zero-emission electrical generation (policies we’ve yet to see) we can dramatically cut emissions from that sector.  But on the other hand, cutting emission from agriculture will be very difficult.  So potential deep cuts from the electricity sector will be partly offset by more modest cuts, or increases, from agriculture, for example.

The graph at the top shows that even as we make deep cuts to emissions from electricity—a projected 60 percent reduction—increases in emissions from the oil and gas sector (i.e. the tar sands) will negate 100 percent of the progress in the electricity sector.  The end result is, according to these projections from the government of Canada, that we miss our 2030 target.  To restate: according to the government’s most recent projections we will fail to meet our Paris commitment, and the primary reason will be rising emissions resulting from tarsands expansion.  This is the big-picture context for the pipeline debate.

We’re entering a new era, one of limits, one of hard choices, one that politicians and voters have not yet learned to navigate.   We are exiting the cornucopian era, the age of petro-industrial exuberance when we could have everything; do it all; have our cake, eat it, and plan on having two cakes in the near future.  In this new era of biophysical limits on fossil fuel combustion and emissions, on water use, on forest cutting, etc. if we want to do one thing, we may be forced to forego something else.  Thus, it is reasonable to ask: If pipeline proponents would have us expand the tar sands, what would they have us contract?

Graph sources: Canada’s 7th National Communication and 3rd Biennial Report, December 2017