Lighting Solutions

Information on this page will help you compare bulb features, brightness and efficiency, color choices, shape choices, and bulb base choices. We also maintain a list of the best prices on LED bulbs at retailers around Maine.

How Much Can You Save?

Use this savings calculator to see how much you can save each year by replacing standard incandescent bulbs with energy-efficient bulbs.

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Bulb Type Cost/yr Savings/yr compared to incandescent

Here is how the most common types of bulbs compare:


Light Bulb Cost Comparison chart

* Annual cost of operation based on 800 lumens for 2 hours per day at $0.16 per kWh.
** CFLs and LEDs require compatible dimmers.

Brightness and Efficiency

Because bulbs vary in their efficiency, it’s best to compare bulbs based on their light output (lumens) rather than their wattage (amount of energy used). The higher the number of lumens, the brighter the light will be. Higher wattage bulbs use more energy. Here’s how bulbs compare:

Color Choices

Traditional incandescent bulbs emit a “warm” color. Today, bulbs are available in a range of colors:

Warm White, Soft White
The standard color
of incandescent bulbs
Cool White, Neutral, Bright White
Good for kitchens
and work spaces
Neutral or Daylight
Good for reading
2700K3000K 3500K4100K 5000K6500K

Shape Choices

bulb-alineA-Line (e.g., A19, A21, or omnidirectional) bulbs disperse light at a wide angle and are ideal for fixtures used to spread light throughout the room. A-line bulbs are a good choice for room area-lighting, reading lamps, and hallways.

Spotlights (e.g., R20, BR30, BR40, etc.) concentrate light in a small area to produce a bright spot of light. Spotlights are a good option for track lighting and overhead recessed lighting.

bulb-floodlightFloodlights (e.g., PAR20, PAR30, etc.) cast a wider directional light than spotlights. Floodlights are ideal for recessed lighting, outdoor lighting, landscape lighting, and motion sensors.

bulb-candleCandelabra and Miniature Candelabra bulbs (e.g., E11, E12, etc.) imitate the shape of a candle and provide ambient and accent lighting. They are for use in decorative lighting fixtures, including wall sconces, decorative fixtures and chandeliers.

Bulb Base Choices

bulb-mediumMedium (e.g., E26, E27) – The bulb base design for standard light bulbs used in most lamps and overhead light fixtures

bulb-intermediateIntermediate (e.g., E17) – A bulb base between the candelabra and medium sizes, commonly used in ceiling fans

Candelabra (e.g., E12) – A slightly smaller bulb base, used in chandeliers, light sconces and other small fixtures

Miniature Candelabra (e.g., E11) – An even smaller bulb base, frequently used in chandeliers

Pin (e.g., GU10, GU24) – These CFL and LED bulbs have twist-and-lock dual-pin connectors.