Generator

generator.js

var totalGen = 19;
var totalMW = 0;

// Loop through for each generator
for(i = 1; i <= totalGen; i++) {
  // Is this an even or odd generator?
  if (i % 2 == 0) {
    // Is this generator 4 or less?
    // Keep track of how many MW (megawatts) this generator produces
    if (i <= 4) {
      var genMW = 62;
    } else {
      var genMW = 124;
    }
    // Let's add to the total MW we have generated
    totalMW = totalMW + genMW;
    console.log("Generator #" + i + " is on, adding " + genMW + " MW, for a total of " + totalMW + " MW!");
  } else {
    // Odd numbered generators are off
    console.log("Generator #" + i + " is off.");
  }
}

Output

Generator #1 is off.
Generator #2 is on, adding 62 MW, for a total of 62 MW!
Generator #3 is off.
Generator #4 is on, adding 62 MW, for a total of 124 MW!
Generator #5 is off.
Generator #6 is on, adding 124 MW, for a total of 248 MW!
Generator #7 is off.
Generator #8 is on, adding 124 MW, for a total of 372 MW!
Generator #9 is off.
Generator #10 is on, adding 124 MW, for a total of 496 MW!
Generator #11 is off.
Generator #12 is on, adding 124 MW, for a total of 620 MW!
Generator #13 is off.
Generator #14 is on, adding 124 MW, for a total of 744 MW!
Generator #15 is off.
Generator #16 is on, adding 124 MW, for a total of 868 MW!
Generator #17 is off.
Generator #18 is on, adding 124 MW, for a total of 992 MW!
Generator #19 is off.