Cost to run a Synology DS224+ (2-bay NAS)
A Synology DS224+ (2-bay NAS) (NAS) draws roughly 6 W at idle and up to 15 W under load. Run 24/7 at a typical ~9 W and the US average of $0.17/kWh, it uses about 79 kWh a year and costs roughly $13.40/year ($1.12/month). In higher-priced regions such as Germany (€0.40/kWh) the same device costs about €31.54/year. Adjust the calculator for your own draw and electricity price.
Source: HomelabWatts wattage database. Data as of 2026-06-13.
2-bay consumer NAS for backups and file sharing.
Idle vs load running cost
| Scenario | Power | Energy / year | Cost / year (US) |
|---|---|---|---|
| Idle | 6 W | 53 kWh | $8.94 |
| Typical 24/7 | 9 W | 79 kWh | $13.40 |
| Full load | 15 W | 131 kWh | $22.34 |
Idle is HDD-spun-down (hibernation). Add ~4-6 W per 3.5" HDD when active. Manufacturer access figure is for two drives active. Source: HomelabWatts wattage database, data as of 2026-06-13.
Cost by region (typical 24/7 draw)
| Region | Price/kWh | Cost / month | Cost / year |
|---|---|---|---|
| United States (avg residential) | $0.17 | $1.12 | $13.40 |
| Germany | €0.40 | €2.63 | €31.54 |
| France | €0.28 | €1.84 | €22.08 |
| United Kingdom | £0.25 | £1.64 | £19.71 |
| Spain | €0.25 | €1.64 | €19.71 |
Prices from electricity price presets (EIA / Eurostat), data as of 2026-06-01. Excludes standing charges and taxes.
Frequently asked questions
How much does it cost to run a Synology DS224+ (2-bay NAS) per year?
At a typical 24/7 draw of about 9 W and the US average of $0.17/kWh, roughly $13.40 per year ($1.12/month). At €0.40/kWh in Germany it is about €31.54. Use the calculator above for your own price.
How many watts does a Synology DS224+ (2-bay NAS) use?
Approximately 6 W at idle and up to 15 W under load. Idle is HDD-spun-down (hibernation). Add ~4-6 W per 3.5" HDD when active. Manufacturer access figure is for two drives active.
Are these figures measured or estimated?
Estimated. They are compiled from manufacturer specifications and community wall-meter measurements; your exact draw depends on configuration, firmware and attached storage. Measure at the wall for a precise figure.
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Last updated: 2026-06-13