How Many Watts of Electricity does a Decorative Lights String use?

Real power-use measurements from a decorative lights string.

By Rob Cockerham |

How Much Power does a Decorative Lights String use

Decorative Lights String: 17 Watts

Description

  • A string of about 20 incandescent mini-lights
  • Low power, but could be lower with LED bulbs

Power Use

  • Watts: 17
  • Kilowatts: 0.017 Kw.

Operation Cost

  • cost per minute: 0 hundredths of one cent (0 ¢)
  • cost per hour: 20 hundredths of one cent (0¢)
  • cost per day: 2¢
  • cost per month: 31¢

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Power use of these items was actually tested. Individual items will vary, but these are the actual measurements.