By Sanjana Das*
**This article was written by Sanjana Das, and selected as the winning essay for the EnergyRates.ca College Scholarship 2026. Das has been admitted to the Bachelor of Sociology program with a minor in Psychology at the University of Alberta.
For as long as humans have existed, there has always been a goal to maximize our efficiency. Whether it’s been to farm the most crops or to find the shortest route to a destination, obsessing over making optimizations in daily tasks has been vital to continuing our evolution. In current times, a sector that has seen incredible growth and research to improve its efficiency is the energy sector. The number of people transitioning towards using renewable energy sources has skyrocketed within this century, showing the desire to eradicate the use of non-renewable energy in favor of clean, efficient energy with minimal waste. However, with all this focus on moving towards renewable energy, many seem to forget about the next step of converting this energy into what is useful and usable. Cogeneration, producing two forms of energy in one process is the future of how renewable energy will be converted into electric and thermal energy in an efficient manner.
Since the Industrial Revolution, people have been curious about using so-called waste energy to perform a practical task. The general idea of cogeneration is based on that curiosity, where thermal energy is taken from a process converting an energy source into electricity to use for another job. Cogeneration usually consumes more energy than a process focusing on a single form of energy, though when having to produce both electric and thermal energy, cogeneration uses less energy (Raj et al., 2011). Even when cogeneration is more efficient than producing specific energy types individually, there is still a search for cogeneration technology with the highest efficiency. By comparing cogeneration plants with different renewable and nonrenewable energy sources as their source of input, the most productive cogeneration system can be found (Kanoglu et al., 2009). By finding the strongest combination of renewable energy and cogeneration, our worries about the negative effects on the environment due to energy production will disappear.
Cogeneration allows for efficient energy production, but it cannot be used for everything. Instead, the area where it shines the most is in residential and small commercial applications, as it meets the electricity and heating demands that these buildings require (Onovwiona et al., 2006). Cogeneration systems aimed for these applications are called “micro-cogeneration systems”, due to their focus on areas with less energy consumption. Slowly placing microcogeneration systems within residential and commercial areas can lead to a new revolution for energy production, with more people noticing the immense advantages which comes with cogeneration. When combined with renewable energy sources, it can lead to the cleanest and most efficient way of energy production and conversion. Once micro-cogeneration systems become mainstream, everyone will have the ability to reduce the amount of waste they produce and lessen the amount of waste given to the world.
Citations:
Kanoglu, M., & Dincer, I. (2009). Performance assessment of cogeneration plants. Energy Conversion and Management, 50(1), 76–81. https://doi.org/10.1016/j.enconman.2008.08.029
Raj, N. T., Iniyan, S., & Goic, R. (2011). A review of renewable energy based cogeneration technologies. Renewable and Sustainable Energy Reviews, 15(8), 3640–3648. https://doi.org/10.1016/j.rser.2011.06.003
Onovwiona, H. I., & Ugursal, V. I. (2006). Residential cogeneration systems: review of the current technology. Renewable and Sustainable Energy Reviews, 10(5), 389–431. https://doi.org/10.1016/j.rser.2004.07.005
