Royalty-Free Energy-saving Photos, dominant color: black

6016x4000

Save me a Spark

Public Domain
5960x4480

Jesus Saves billboard

Public Domain
6016x3858

light, staircase, lighting, architecture, elevator, structure

Public Domain
6016x4000

white and yellow spiral light bulb

Public Domain
1274x1920

hand, spirit, dark world, gateway, dimension, spiritual

Public Domain
3008x2000

pen on printed paper

Public Domain
6024x4024

silhouette of windmills

Public Domain
1920x1285

e=mc2 text

Public Domain
2600x1733

time lapse photography of birds flying over electric post

Public Domain
1920x1080

planet earth

Public Domain
3200x1978

light bulb with tree artwork

Public Domain
2135x1164

LED bulb lot

Public Domain
2511x1419

clear glass bulb lot

Public Domain
2048x1365

1 ounce fine gold pack

Public Domain
4961x3508

person holding lighted bulb

Public Domain
3264x2448

black and white city during nighttime under full moon

Public Domain
3000x2000

Fire Coming Out from Engine

Public Domain
4000x4000

six edges symbol illustration

Public Domain
1920x1080

low angle photography of light bulbs

Public Domain
3634x2432

white liquid pouring from bottle

Public Domain
3872x2592

selective focus photography of plasma ball

Public Domain
3546x2364

medium short-coated tan dog on focus photo

Public Domain
2201x1442

wind mills

Public Domain
4263x2693

fire

Public Domain
3762x3456

red plasma ball

Public Domain
3456x2304

turned on brown pendant lamp

Public Domain
3456x5184

painting of angel

Public Domain
1920x1285

Close-up of Text

Public Domain
3000x3000

four light bulbs turned on

Public Domain
5184x3456

grey rock

Public Domain