CMU Researchers Aim to Cut Home Energy Costs for Consumers

Home energy bills continue to climb, causing financial strain for many. Amidst these rising costs, researchers at Carnegie Mellon University are striving to alleviate this burden by enhancing energy efficiency in homes. Their initiatives include developing technology to optimize heating and cooling systems and suggesting new utility billing structures.

A Mobile Solution for Energy Efficiency

Erica Cochran Hameen and Ph.D. candidate Nihar Pathak at CMU’s School of Architecture are pioneering efforts to improve home comfort without increasing expenses. Their approach involves a mobile sensing device that traverses a home like a robotic vacuum, collecting data such as room temperature and air quality.

“A Roomba roams around your house because it knows that dust doesn’t stay in one place,” explained Cochran Hameen. “The same thing should be true for an environmental sensor: It needs the ability to move to understand which rooms are warmer or cooler.”

This innovative device aims to overcome the limitations of static thermostats, which often fail to represent the overall climate of a home. By collaborating with the Carnegie Bosch Institute, Cochran Hameen and Pathak plan to make this technology affordable and accessible, allowing users to monitor their home environments via smartphone apps.

The device’s success hinges on an algorithm enabling seamless communication between different home systems, such as thermostats and air quality monitors. “We are building a system that allows all your systems to talk to each other,” Cochran Hameen noted. This could lead to energy savings by suggesting actions like opening blinds instead of turning on lights.

Their research is already making an impact in Pittsburgh’s Homewood neighborhood, where they educate residents on using the device to improve indoor living conditions. Pathak stated, “We conducted classes with residents who were interested in learning more about the device,” empowering them to use data for improving their homes.

The Importance of Comfortable Temperatures

Heating and cooling systems account for over half of a home’s energy use, says Destenie Nock, from CMU’s College of Engineering. Understanding residents’ preferences is crucial for effective energy use, she argues.

“When we talk about energy affordability, too often people just focus on the cost of the bill, but they don’t focus enough on how people are using energy in their home,” Nock explained. She emphasizes that the focus should also be on ensuring comfort rather than merely reducing costs.

Nock highlights that many people limit heating or cooling to save money, potentially risking health issues. Energy-efficient systems could reduce costs and allow for more comfortable living conditions.

Rethinking Utility Billing

Nock suggests a new billing model to make energy more affordable, proposing a flat-rate fee for basic energy usage combined with an incremental rate for additional use. This model reflects the telecom industry’s evolution from per-unit billing to flat-rate plans.

In a recent study, Nock calculated that a 1,000 square foot home requires 600-1,300 kWh for basic needs, depending on heating. “Utilities like electricity and gas have been treated as a commodity,” Nock noted. “But now we’re hearing about affordability challenges more and more because people are realizing energy is a need, not a commodity.”