Is it possible to use energy levels to confirm that a high / low is in / very near?

I certainly seem to think so. White verticals.

The 3 expressions:

(ExtMapBuffer[i]>ExtMapBuffer[i+1]+4 && ExtMapBuffer[i+1]<StdDevLoBuffer[i+1]+5) 
      || (ExtMapBuffer[i+1]<StdDevLoBuffer[i+1] && ExtMapBuffer[i+2]<StdDevLoBuffer[i+2] && ExtMapBuffer[i+3]<StdDevLoBuffer[i+3] && ExtMapBuffer[i+4]<StdDevLoBuffer[i+4] && ExtMapBuffer[i+5]<StdDevLoBuffer[i+5] && ExtMapBuffer[i]<35 && StdDevLoBuffer[i]<38)
      || (ExtMapBuffer[i]>ExtMapBuffer[i+1]+2 && ExtMapBuffer[i+1]<StdDevLoBuffer[i+1] && StdDevLoBuffer[i]>44) 

extern int ChoppinessPeriod=48;        // Number of bars to evaluation CI
extern int SmoothingPeriod=1;          // Number of bars to apply SMA
extern int StdDevPeriod=48;            // Number of bars to evaluate Standard Deviation of the CI

 for (int i=MaxCalcBars; i>=0; i--) 
    {
    IntMapBuffer[i] = ChoppinessIndex(ChoppinessPeriod,i);
    bufferTemp1 = 0;
    for(int j=0; j<SmoothingPeriod; j++) { z=i+j; bufferTemp1 += IntMapBuffer[z]; }
    ExtMapBuffer[i] = bufferTemp1 / SmoothingPeriod;
    IntStdDevBuffer[i] = StdDev(i,StdDevPeriod);
    bufferTemp1 = 0;
    bufferTemp2 = 0;
    for(int n=0; n<StdDevPeriod; n++)
      {
      z=i+n;
      if (StdDevFollowPrice)
        {
        bufferTemp1 += ExtMapBuffer[z];
        bufferTemp2 += ExtMapBuffer[z];
        }
      else
        {
        bufferTemp1 += 50;
        bufferTemp2 += 50;
        }
      bufferTemp1 += IntStdDevBuffer[i]*2;
      bufferTemp2 -= IntStdDevBuffer[i]*2;
      }
    StdDevHiBuffer[i] = bufferTemp1 / StdDevPeriod;
    StdDevLoBuffer[i] = bufferTemp2 / StdDevPeriod;
    }

Credits to David Moser for adding STD bands to the plots.