There's a plentiful carbon-free energy source we have available right now, nuclear. Waste management is a bit of an issue but nothing that couldn't be fixed. Too bad it's in the same category as other poorly understood dangerous sounding technologies like GMOs and vaccines. Chernobyl's current death toll estimate is around 35 people (25 plant personnel from the explosion and direct radiation, around 10 due to thyroid cancer). Fukushima's death toll is 0, which if anything is a testament to how safe nuclear is. Huge earthquake and a tsunami hit a poorly managed reactor using antiquated 70s technology, and basically nothing happens.