https://www.vice.com/en_us/article/xgzwna/researchers-think-megastructures-can-help-seed-life-throughout-the-galaxy

When you hear the word "conservation" you might think about newt-counting or anti-fracking actions. What you probably don’t think about is blowing up Jupiter and using its raw materials to build a megastructure enveloping the Sun. 

But this is exactly the idea suggested by the ingenious astrophysicist Freeman Dyson back in 1960. He suggested that we could construct a swarm of solar panels enclosing our sun, capturing all its energy. Dyson reasoned that as humans use more and more energy, eventually we are going to outrun what can be captured on Earth alone. Only by expanding the “energy metabolism” of our civilization beyond our planet could we avoid catastrophic resource exhaustion.