IAMMETER EFSS: Data-Driven Tool to Find the Cheapest Electricity Plan
Energy Forecasting and Simulation System
🔗 Try Now: EFSS Electricity Tariff Simulation Tool 📖 Step-by-Step Guide: How EFSS Helps You Find the Best Electricity Supplier
1. Why Do You Need EFSS?
In many countries, especially Australia, the electricity retail market is highly competitive. Different energy providers offer a variety of electricity tariff plans, including:
- Flat rate electricity tariffs
- Time-of-Use (TOU) tariffs — peak, shoulder, and off-peak rates
- Tiered/Block tariffs — different prices for different usage ranges
- Demand tariffs — demand charge + consumption charge
- Different solar feed-in tariffs for exported energy
For the average consumer, these plans may look similar on paper, but in reality, the annual cost can vary significantly.
Common pain points include:
- Complex tariff rules
- Time-of-use windows vary by provider, sometimes by season or day type
- No easy way to compare
- Official tariff sheets show unit prices but don’t calculate your actual bill based on your usage pattern
- Risk of choosing the wrong plan
- Once locked into a contract, changing plans may not be possible for months, potentially costing hundreds of extra dollars annually
- Even more complex for solar users
- You need to account for both imported electricity cost and exported energy income from feed-in tariffs
- If you have battery storage, charging and discharging strategies will also affect your bill
The reality is:
Even with detailed tariff information, it’s difficult to determine the cheapest electricity plan without a data-driven simulation tool.
2. How EFSS Helps You Save on Electricity Bills
IAMMETER’s EFSS (Energy Forecasting and Simulation System) is designed to solve this problem.
The idea is simple:
Use your actual historical energy consumption data, apply different electricity tariff templates, simulate the bill for each plan, and instantly see which one costs the least.
📌 You can start right away using the EFSS Electricity Tariff Comparison Tool. If you need a detailed guide, check our step-by-step EFSS tutorial.
Key Features
- Import Real Consumption Data
- Automatically sync historical data from IAMMETER Cloud
- Upload CSV files for non-IAMMETER users
- Create Custom Tariff Templates
- Supports flat rate, time-of-use, tiered, and demand tariffs
- Allows setting different solar feed-in tariffs
- Simulate Multiple Plans at Once
- Apply multiple tariff templates to the same dataset
- Output total cost, imported energy, and exported energy income for each plan
- Clear Visual Comparison
- Graphical bill comparison makes it easy to identify the cheapest electricity plan
- Supports Local Tariff Rules
- Fully customizable TOU windows, rates, and tiered thresholds
- Works for all Australian states and global electricity markets
3. Example Use Cases (Australia)
- Switching electricity providers: Compare multiple suppliers’ plans to see the cheapest annual cost
- Evaluating TOU tariffs: Check if moving from flat rate to time-of-use will actually save money
- Solar feed-in tariff optimisation: Compare how different FiT rates affect your total annual bill
- Battery storage strategy: Analyse how charging/discharging schedules impact electricity costs
4. Conclusion
The biggest advantage of EFSS is that it doesn’t rely on assumptions — it uses your actual usage data to calculate the bill.
- Real data → Accurate results
- Clear comparisons → Confident decisions
- Full flexibility → Works with any tariff structure
For markets with diverse and complex electricity tariffs — like Australia — EFSS helps you scientifically choose the most cost-effective electricity plan, avoiding unnecessary spending.
✅ Start your electricity bill simulation today: EFSS Energy Tariff Calculator