Reduce your usage just by being more conscious.

If you have the space, you can start small with a few panels, a cheap charge controller, and either a small power station or battery with an inverter or converter. For most people, the biggest power usages are heating and cooling. There are ways to improve efficiency of both of those or use design (if building new) to reduce the energy inputs required to heat and cool your space.

There's a lot to this, and I'm no where near being independent yet, but, that's OK since I'm moving towards the goal.