 Here is a simplified Python code using the DREAM library to simulate the energy balance in a plasma. Please note that this is a basic example and might need adjustments based on your specific requirements.

```python
from dream import *

# Initialize the simulation
sim = Simulation()

# Set up radial grid
grid = RadialGrid(rMin=0.0, rMax=1.0, nR=100)
sim.addSetting(grid)

# Set time steps
sim.addSetting(TimeStep(dt=1e-6))

# Add ions
sim.addSetting(construct_A(species=['H', 'He']))

# Set up temperature and electric field
sim.addSetting(Temperature(T=1.0))
sim.addSetting(ElectricField(E=0.1))

# Disable runaway and hot-tail grid
sim.addSetting(_generateMomentumGrid(runaway=False, hotTail=False))

# Save settings before each stage
sim.addSetting(saveSettings('initialization'))

# Stage 1: Initialization
sim.runSimulation()

# Stage 2: Ionization
sim.addSetting(setIonization(ionization=1.0))
sim.addSetting(saveSettings('ionization'))
sim.runSimulation()

# Stage 3: Equilibration
# No specific settings needed for equilibration
sim.addSetting(saveSettings('equilibration'))
sim.runSimulation()

# Stage 4: Radiation
# Change radial grid for radiation calculation
radialGrid = RadialGrid(rMin=0.0, rMax=1.0, nR=200)
sim.addSetting(changeRadialGrid(grid=radialGrid))

# Save settings before radiation calculation
sim.addSetting(saveSettings('radiation'))

# Run the simulation for radiation calculation
sim.runSimulation()

# Get temperature and energy balance data
temperature = getTemperature(grid=radialGrid)
energyBalance = sim.getSetting('energyBalance')

# Plot temperature and energy balance
plotTemperature(temperature, format=plot.Format.LOG, title='Temperature vs Radius')
plotEnergyBalance(energyBalance, format=plot.Format.LOG, title='Energy Balance vs Temperature')
```

This code sets up a basic plasma simulation using the DREAM library, runs it through four stages (initialization, ionization, equilibration, and radiation), saves the settings after each stage, and plots the temperature and energy balance at equilibrium ionization. The code assumes that the necessary functions and settings for your specific plasma simulation are already defined in the DREAM library.