# 5. Break-even Period

### <mark style="color:green;">1. Calculation Results</mark>

<figure><img src="/files/tpLGFeO1yLsEVdQa1SJj" alt="" width="346"><figcaption></figcaption></figure>

* The graph on the left shows the payback period for a **$149** Ec³ plug.
* The calculation is based on an electricity cost of **$0.16 per kWh**, with each ECT valued at **$0.05, $0.075 and $0.1**
* According to the calculations, if 1**Kwh** of electricity is used **during peak hours** every day, it will take a maximum of **100 days** to break even.

### <mark style="color:green;">2. Calculation Process</mark>

| **Income and Expenditure Items**  | **$** | **Reference**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| --------------------------------- | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Cost per kWh of electricity usage | 0.16  | <https://www.eia.gov/electricity/monthly/update/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| ECTs earned per green score       | 24    | <p><strong>Green Score</strong> = Amount of kWh consumed \* the electricity consumption coefficient for the corresponding time period</p><p></p><p><strong>Earning ECT</strong> = (Total ECT reward per mining round ÷ Sum of all users' green scores) × 90%</p><p></p><p>The daily mining quantity is halved every two years, with <strong>200,000 ECTs</strong> per day from 2024 to 2025.</p><p></p><p>Assuming <strong>4,000 non-whitelisted users</strong>, with each user consuming 1 kWh during peak hours and 1 kWh during off-peak hours, the total green score for users is 7400.</p><p></p><p>At this time, ECTs earned per green score = (200,000 / 7400) × 90% ≈ 24</p> |
| ECT Value                         | 0.05  | Total supply of 1 billion, market capitalization around 50 million.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Ec³ Plug Cost                     | 149   | <https://www.ec-cube.io/mall>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |

* Electricity Cost: The cost per kWh of electricity is referenced from the electricity cost published by the U.S. Energy Information Administration (EIA).
* ECT Quantity Acquired: section[ Mining Reward ](/tokenomic/4.-mining-reward.md)in [Tokenomic](https://docs.ec-cube.io/tokenomic).
* Electricity Consumption Coefficient: Referenced from the Economic Model Overview | VI. Items to be Modified.
* Additional Note from Jianlin: 1/10 of the ECTs earned by users from mining will be used as compensation for gas fees.
* X-axis: Represents the amount of kWh electricity used by users during peak hours each day.

  Reference for the daily electricity usage range on the X-axis: The average daily electricity usage for a U.S. household (3 people) is 37.1 kWh.
* Electricity Monthly Update - U.S. Energy Information Administration (EIA)


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