Wind varies a lot, we're approaching the point where extra wind turbines will fail to displace other power source capacity (the only power source we can vary is

Wind varies a lot, we're approaching the point where extra wind turbines will fail to displace other power source capacity (the only power source we can vary is natural gas, which can already get close to zero with our current wind capacity). A doubling of wind capacity will reduce how much gas we'd burn in total, but you'd really start to hit diminishing returns.