[
  {
    "energy_per_mb": 120,
    "id": "lava"
  },
  {
    "energy_per_mb": 2000,
    "id": "pyrotheum"
  },
  {
    "energy_per_mb": 40,
    "id": "ic2hot_coolant"
  },
  {
    "energy_per_mb": 80,
    "id": "ic2pahoehoe_lava"
  }
]