1. Energy-Saving Effect through Automation (Simulation)

We estimated the difference in electricity bills between traditional use and introducing automation with smart plugs.

2. Electricity Bill Situation in 2026

In 2026, electricity bills in Japan have temporarily settled down due to government subsidy policies. However, the future uncertainty of energy prices remains unchanged.

3. The Best Tools to Smartify Existing Appliances

SwitchBot Plug Mini (Matter Certified)

SwitchBot Hygrometer Pro

4. Specific Energy-Saving Automation Example

Trigger:
  - Location: Leaves Home Geofence
Action:
  - Turn OFF: Heater Plug
  - Turn OFF: Kotatsu Plug
  - Push: Air Conditioner OFF (via Hub)
Notification:
  - Send: "All heating has been turned off. Energy saving complete!"

Deep Dive: Real-time Electricity Price Monitoring Script

By scraping data from exchanges like JEPX, it’s possible to implement advanced energy saving that automatically throttles the heater only during price spikes.

import requests
from bs4 import BeautifulSoup

def get_current_power_price():
    # Fetch real-time price by area (example)
    res = requests.get("https://.../jepx-price-api")
    price = res.json()["tokyo_price"]
    
    if price > 30: # Judge as price spike if over 30 yen/kWh
        return "HIGH_PRICE_ALERT"
    return "NORMAL"

By linking this with a smart plug API, you can complete a fully automated savings house that “heats only when electricity is cheap.”

Summary

Energy saving is not “endurance” but “optimization.” Build a system with SwitchBot to use electricity efficiently only when needed, and put the money you save toward a new gadget.