Sure, you’ve thought about adding solar panels to your roof as a way of reducing your home’s carbon footprint. Maybe you’ve even given wind power a gander. But what about ground source heat pumps?
There are many ways in which waging war is not a green proposition (depleted uranium casings, anyone?). But the military’s huge need for energy is making it a leader in exploring green technologies and renewable energy.
The Department of Energy just tossed out $84 million to fund it. Google’s Clean Energy 2030 plan champions it. And an MIT report estimated it could fuel the country for centuries. Geothermal energy: It’s clean, renewable, and plentiful. Great. So, um, what is it exactly?