Wireless networks are a critical component of modern communication infrastructures, with Wi-Fi being one of the most widespread protocols of this kind. Despite huge advances in performance and features, researchers still face significant challenges, including energy efficiency. As the number of users relying on 802.11 networks grows, addressing energy efficiency is more important than ever to ensure longer battery lives and lower energy usage, critical in the current socioeconomic context. To address this issue, we propose a novel approach that reduces the transmission power of the devices. Our proposal allows devices to maintain a similar throughput with a lower transmission power, leading to a better efficiency without a throughput loss. These reductions not only improve efficiency but also reduce the interference in other parts of the network, generating a virtuous cascading effect. New devices will be able to reduce their transmit power further, which in turn enables even more devices to do so. Our experiments demonstrate that this cooperative approach leads to a significant cumulative reduction in energy consumption and improves the overall network performance. In addition, we provide a discussion on how these scenarios can be adapted to the real-world complexities of Wi-Fi networks. By enabling a more sustainable use of energy resources, our research has significant implications for the development of future wireless communication systems.