Sustainability House residents were interested in learning about their personal electricity consumption and what could be done to minimize their carbon footprint as a house. A unique feature of the Sustainability House is that it hosts a 4kW solar pv array that was installed in 2011. This sustainable energy feature provides the opportunity for residents to learn more about electricity generation and how it varies by season and time of day. Though this array is fairly small compared to many household arrays (especially considering that ten students live in the Sustainability House), residents took it as a challenge to consume within the means of what their solar panels could produce. Over the 2016-2017 school year, Sustainability House residents, led by two student Energy Educators, monitored the electricity production and consumption for the house through devices that were installed on house meters.
Electricity information is available
online and accessible to all house members, but a low tech solution to sharing data seemed to be most effective. Energy Educators tracked production and consumption information daily using a dry erase marker on a window in a common space. Their theory was that residents would be more likely to engage with this information if it was placed in a highly visible location. Results of a survey conducted at the end of the year demonstrate that every member of the house reported positive change in their behavior due to having more information available to them. Energy Educators empowered housemates to learn and make adjustments to their own lifestyle to minimize their personal consumption but made it a point to never impose behavior changes upon their peers.
As it turns out, this increased education, knowledge and awareness of usage paid off! Over the 2016-17 academic year, Sustainability House residents consumed 61% less electricity than the previous year. Given that they consumed 2626 kwh from September 2016-May 2017 and their 4kW solar array produced 2849 kwh, the students impressively were able to keep their electricity consumption within the limits of their fairly small solar PV system. Last year Sustainability House electricity came 100% from the sun. Good work, Sustainability House!