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44 lines
1.9 KiB
Markdown
44 lines
1.9 KiB
Markdown
---
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sidebar_label: 📊 Price Rating
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---
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# 📊 Price Rating Thresholds
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**Settings → Devices & Services → Tibber Prices → Configure → 📊 Price Rating**
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---
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Price ratings classify each 15-minute interval as **LOW**, **NORMAL**, or **HIGH** relative to the 24-hour trailing average. Sensors and automations can use these ratings to decide when to run appliances.
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See **[Ratings & Levels](sensors-ratings-levels.md)** for a full explanation of how ratings work and which sensors expose them.
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## Settings
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| Setting | Default | Description |
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|---------|---------|-------------|
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| **Low threshold** | -10% | Prices this far below the trailing average → rated **LOW** |
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| **High threshold** | +10% | Prices this far above the trailing average → rated **HIGH** |
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| **Hysteresis** | 2% | Buffer zone around thresholds — prevents rapid flickering when a price hovers right at the boundary |
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| **Gap tolerance** | 1 | Smooths isolated rating blocks: a lone NORMAL interval surrounded by LOW on both sides gets corrected to LOW |
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## How thresholds are applied
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```
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Trailing 24h average: 20 ct/kWh
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Low threshold: -10% → prices ≤ 18 ct → LOW
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High threshold: +10% → prices ≥ 22 ct → HIGH
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Everything else → NORMAL
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```
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Hysteresis adds an inner dead-band: once a rating is set to LOW, it stays LOW until the price rises above `18 ct + 2% = 18.36 ct`. This prevents sensors from flickering between LOW and NORMAL when prices are right at the boundary.
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## Adjusting for your market
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**Markets with low daily price variation** (e.g., day typically stays within ±5%):
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- Lower the thresholds: try -5% / +5%
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- This keeps meaningful LOW/HIGH periods even on calm days
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**Markets with high daily variation** (e.g., ±30% swings):
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- Raise the thresholds: try -15% / +15%
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- This reserves LOW/HIGH for genuinely exceptional periods only
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- Consider using [Volatility](config-volatility.md) sensors alongside ratings on such days
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