If you're considering adding a custom neon sign to your home or business, you might wonder: how much electricity do neon signs actually use? Will they cause a spike in your electric bill? The answer depends on the type of neon you choose – traditional glass neon or modern LED neon – as well as the sign's size, color, and how many hours you keep it on. This guide breaks down the numbers so you can make an informed decision and enjoy your glowing sign without worrying about energy costs.

Traditional Glass Neon vs. LED Neon: A Huge Difference

The most important factor in energy consumption is the technology. Traditional glass neon signs operate at high voltage (thousands of volts) and rely on ionizing gas inside fragile glass tubes. Modern LED neon flex uses low‑voltage DC power and solid‑state LEDs. The difference in energy use is dramatic.

As you can see, LED neon uses roughly 80–90% less electricity than glass neon for the same length and brightness. For this reason, almost all custom neon signs today – including those in White, Hot Pink, Lemon Yellow, or any color from our palette – are made with LED neon flex. Unless you are a vintage purist, LED is the clear winner for energy savings.

Calculating Energy Use for a Typical LED Neon Sign

Let's put numbers into real‑world examples. Our calculations assume average electricity cost of $0.15 per kilowatt‑hour (kWh), which is typical in the US.

Example 1: Small word sign – "Love" in Light Pink (2 feet long)
- Power draw: 2 ft × 10 watts/ft = 20 watts
- Running 8 hours/day: 20W × 8h = 160 watt‑hours = 0.16 kWh per day
- Daily cost: 0.16 kWh × $0.15 = $0.024 (about 2.4 cents)
- Monthly cost (30 days): $0.72
- Yearly cost: $8.64

Example 2: Medium bar sign – "BAR" in Red (4 feet long)
- Power draw: 4 ft × 12 watts/ft = 48 watts
- Running 10 hours/day: 48W × 10h = 480 watt‑hours = 0.48 kWh/day
- Daily cost: 0.48 × $0.15 = $0.072 (about 7 cents)
- Monthly cost: $2.16
- Yearly cost: $26.00

Example 3: Large storefront sign – "OPEN" in White (6 feet long)
- Power draw: 6 ft × 15 watts/ft = 90 watts
- Running 12 hours/day: 90W × 12h = 1,080 watt‑hours = 1.08 kWh/day
- Daily cost: 1.08 × $0.15 = $0.162 (about 16 cents)
- Monthly cost: $4.86
- Yearly cost: $58.32

Example 4: Extra‑large outdoor sign – "BAR" in Lemon Yellow (10 feet long)
- Power draw: 10 ft × 15 watts/ft = 150 watts
- Running 8 hours/day (business hours): 150W × 8h = 1.2 kWh/day
- Daily cost: 1.2 × $0.15 = $0.18 (18 cents)
- Monthly cost: $5.40
- Yearly cost: $64.80

As you can see, even the largest LED neon sign costs less than $10 per month to run. For most homeowners and small businesses, the electricity cost is negligible – often less than a cup of coffee.

How Much Would the Same Signs Cost with Glass Neon?

For comparison, let's calculate the same 4‑foot "BAR" sign using traditional glass neon (average 60 watts per foot).
- Power draw: 4 ft × 60 watts/ft = 240 watts
- Running 10 hours/day: 240W × 10h = 2.4 kWh/day
- Daily cost: 2.4 × $0.15 = $0.36 (36 cents)
- Monthly cost: $10.80
- Yearly cost: $129.60

Over five years, the glass neon sign would cost about $650 in electricity, while the LED sign would cost about $130. The savings alone could pay for a new LED sign.

Does Color Affect Energy Consumption?

With LED neon, color has a small but noticeable effect on power draw. In general:

- White, Warm White, Lemon Yellow, Golden Yellow: These colors use the most efficient LEDs. Power draw is at the lower end of the range (5–10 watts per foot).
- Green, Light Green, Red, Light Red, Orange, Hot Pink, Light Pink: Medium efficiency. Expect 8–12 watts per foot.
- Blue, Ice Blue, Purple: These colors require slightly more energy (10–15 watts per foot) because blue LEDs operate at a higher forward voltage.
- Rainbow, Multicolor: If the sign cycles through colors, it may use power equivalent to the brightest color in the cycle. If multiple colors are on at once (e.g., a rainbow script), power draw adds up per color segment. Ask your manufacturer for exact specs.

In practical terms, the difference between the most and least efficient color is only a few dollars per year. Choose the color you love – don't worry about energy.

Does Brightness (Dimmer Setting) Affect Electricity Use?

Yes. If your sign is dimmable (most LED neon signs are), running it at 50% brightness typically uses about 50% less electricity. This is because LED drivers reduce current to lower light output. For example, a sign that draws 60 watts at full brightness might draw 30 watts when dimmed to 50%.

Practical tip: Use a dimmer to save energy while also creating the perfect mood. During daytime or when you need high visibility, run at full brightness. In the evening or for cozy ambiance, dim down – you'll save electricity and extend the life of your sign.

Annual Cost Chart for Common Sign Sizes (LED Neon)

Assuming average 12 watts per foot, 12 hours/day, $0.15/kWh:

Note: These are estimates. Actual costs depend on exact wattage, hours of use, and local electricity rates. In Europe or elsewhere with higher rates ($0.25–$0.35/kWh), costs would be about double.

Tips to Minimize Electricity Use Without Sacrificing Impact

Even though LED neon is already very efficient, you can save more with these habits:

- Use a timer or smart plug: Automatically turn the sign on and off according to business hours or your daily routine. No wasted overnight electricity.
- Take advantage of dimming: Run at full brightness only when needed (e.g., daytime). Dim to 30–50% in the evening.
- Choose a smaller sign for accent areas: A 2‑foot sign uses half the power of a 4‑foot sign. Use appropriate scale.
- Keep the sign clean: Dust reduces brightness, causing you to run it brighter (or leave it on longer) to compensate.
- For outdoor signs, use photocell sensors: Automatically turn on at dusk and off at dawn.
- Choose efficient colors for large signs: If you need a very large sign (10+ feet), consider White or Lemon Yellow, which are the most energy‑efficient.

Comparing Neon to Other Lighting Types

How does a neon sign compare to common household lights?

A 4‑foot LED neon sign uses about the same electricity as a single old‑fashioned incandescent bulb – but it provides far more visual impact and decorative value.

Final Verdict: Are Neon Signs Energy‑Hogs?

No – at least not modern LED neon signs. A typical custom sign costs between $0.50 and $5 per month to run, depending on size and hours. Over a full year, you're unlikely to notice the increase on your electric bill. Traditional glass neon signs are another story; they use 5–10 times more power and are not recommended for most users today.

If you are concerned about electricity, choose an LED‑based sign (which almost all custom makers use), pick a dimmable model, and use a timer. You'll enjoy the beautiful glow of your custom sign – in White, Hot Pink, Rainbow, or any color you love – without any guilt about energy waste.