Reducing Energy Consumption
Trinity College continues to strive to reduce energy consumption in all its operations. Below is a chart and table showing the College’s energy consumption over the last ten years, converted to a standard measure of “equivalent kilowatt-hours”.
Steam is used to heat the buildings and for cooking; electricity (“hydro”) is used for lighting and for running machinery; natural gas is used for clothes dryers and cooking.
At 7.7 million ekwh, total consumption is up slightly from the last two years, driven by the very cold winter months of January-March 2014. The longer terms gains, however, are holding. The College now consumes about 25% less energy than the 10 million ekwh consumed annually until 2008.
Within the total, hydro consumption is a very positive story. Consumption was 1.8 million kwh in 2014, the first time ever below 1.9 million kwh, and a vast improvement over the 3 million kwh consumed in the early 2000s.
Natural gas consumption is also way down, for two reasons: (1) domestic hot water is now being heated with steam rather than gas as this currently seems more efficient and (2) the consolidation of the dining halls in 2013 reduced steam used in cooking.
The College will continue to pursue opportunities for further reductions in the future.