EV Charger Speed by Type

import matplotlib.pyplot as plt
import numpy as np

np.random.seed(42)

charger_types = ['Level 1\n(120V)', 'Level 2\n(240V)', 'DC Fast\n50kW', 'Tesla\nSupercharger', 'Ultra-Fast\n350kW']
miles_per_hour = np.array([4, 25, 180, 250, 500])
variability = np.array([0.5, 3, 25, 35, 75])

fig, ax = plt.subplots(figsize=(10, 6), facecolor='#ffffff')
ax.set_facecolor('#ffffff')

x = np.arange(len(charger_types))
colors = ['#9ca3af', '#27D3F5', '#6CF527', '#F5276C', '#5314E6']

bars = ax.bar(x, miles_per_hour, yerr=variability, capsize=6,
              color=colors, edgecolor='white', linewidth=2,
              error_kw={'ecolor': '#374151', 'elinewidth': 2, 'capthick': 2},
              alpha=0.9, width=0.65)

for bar, mph, var in zip(bars, miles_per_hour, variability):
    ax.text(bar.get_x() + bar.get_width()/2, bar.get_height() + var + 15,
            f'{mph}', ha='center', color='#374151', fontsize=11, fontweight='700')

ax.set_xlabel('Charger Type', fontsize=12, color='#374151', fontweight='600')
ax.set_ylabel('Miles of Range per Hour', fontsize=12, color='#374151', fontweight='600')
ax.set_title('Electric Vehicle Charging Speed by Type', fontsize=15, 
             color='#1f2937', fontweight='bold', pad=20)

ax.set_xticks(x)
ax.set_xticklabels(charger_types, fontsize=10)
ax.tick_params(colors='#6b7280', labelsize=10)
ax.set_ylim(0, 620)
ax.grid(True, axis='y', alpha=0.4, color='#e5e7eb')
ax.spines['top'].set_visible(False)
ax.spines['right'].set_visible(False)
ax.spines['left'].set_color('#d1d5db')
ax.spines['bottom'].set_color('#d1d5db')

plt.tight_layout()
plt.show()