Your idea sounds similar to the Kardashev scale [1], and we seem to be at 0.733. The concept of the Dyson sphere emerged from that theory. [1] https://en.wiki

Your idea sounds similar to the Kardashev scale [1], and we seem to be at 0.733. The concept of the Dyson sphere emerged from that theory. [1] https://en.wikipedia.org/wiki/Kardashev_scale https://en.wikipedia.org/wiki/Kardashev_scale