What method can significantly lower individual energy usage?

Promoting energy-saving habits is a highly effective method for significantly lowering individual energy usage. This approach focuses on behavioral changes and awareness that can lead to substantial reductions in energy consumption. Simple actions, such as turning off lights when leaving a room, reducing water heater temperatures, unplugging devices not in use, optimizing heating and cooling systems, and using appliances more efficiently, can collectively make a considerable impact on overall energy use.

In contrast, while applying for government grants can potentially aid in funding for energy-efficient upgrades, it does not directly lower energy usage on an immediate personal level. Investing in new technologies may provide long-term energy savings but often requires significant upfront costs and may not be accessible to everyone. Shifting to grid-supplied energy might not necessarily reduce an individual's energy consumption and could even increase reliance on fossil fuels, depending on the source of that energy. Therefore, fostering habits around energy conservation offers a practical and accessible pathway for individuals to take immediate action towards reducing their energy footprint.