Historic and projected CO2 emissions from the U.S. electric sector, 1990–2050

Rocky Mountain Institute’s four scenarios for the future U.S. electricity system ( detailed here ) all have markedly different projected CO2 emissions over the next 40 years.

 

2050 generation by case

Each of Rocky Mountain Institute’s four scenarios for the future U.S. electricity system (detailed here) will have a very different electricity generation mix.

 

Historic and projected U.S. electricity demand, 1950-2050

While U.S. demand for electricity has risen in all but four years since 1949, the rate of increase has been steadily trending down. The Energy Information Administration predicts an annual growth rate around +1% to 2030 (which RMI extrapolates to 2050). Successfully implementing the energy efficiency improvements in buildings and industry discussed in Reinventing Fire could reduce this to a steady –1%.

 

Cumulative new transmission requirements in four scenarios

Rocky Mountain Institute’s four scenarios for the future U.S. electricity system ( detailed here ) all have very different requirements for an expanded transmission infrastructure.

 

Present value cost of the U.S. electricity system

While Rocky Mountain Institute’s four scenarios for the future U.S. electricity system ( detailed here ) have profoundly different resource portfolios, grid structures, environmental impacts, and risk, all the scenarios have very similar overall system costs.

 

Electricity scenarios

In Reinventing Fire, Rocky Mountain Institute investigates the implications of four radically different future electricity scenarios - from a “business-as-usual” case to a network of intelligent microgrids powered largely by distributed renewables.

 

2050 installed capacity by case

The required generating capacity and its breakdown are very different in each of Rocky Mountain Institute’s four scenarios for the future U.S. electricity system (detailed here).