Sponsored photos by

Trees grow on piles of money and energy-saving charts on home models in a residential home energy efficiency assessment concept office.
Hand turning a knob with efficiency scale from black and red to green color. Composite image between a hand photography and a 3D background.
Family looking at smart thermostat, adjusting, lowering heating temperature at home. Concept of sustainable, efficient, and smart technology in home heating and thermostats.
Side view pleasant young woman using smart home system or activating modern alarm system before leaving apartment. Happy lady turning off easy security technology, when returning house or flat.
Quality increase and cost optimization for products or services to improve customer satisfaction and enhance company performance. Successful corporate strategy and management. Effective business.

Free stock photosefficiency (381)

Solution rubber grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/solution-rubber-grunge-seal-314883701">Image used under license from Freestock.com</a>
Solution rubber grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/solution-rubber-grunge-seal-314630144">Image used under license from Freestock.com</a>
Solution abstract linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/solution-abstract-linear-rosette-329879108">Image used under license from Freestock.com</a>
Green energy rubber grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/green-energy-rubber-grunge-seal-273724469">Image used under license from Freestock.com</a>
Skylight and supporting wallImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/skylight-supporting-wall-1064755">Image used under license from Freestock.com</a>
Facility linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/facility-linear-rosette-330298697">Image used under license from Freestock.com</a>
Energy rubber grunge stampImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-grunge-stamp-278278106">Image used under license from Freestock.com</a>
Energy linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-linear-rosette-314928179">Image used under license from Freestock.com</a>
Facility abstract rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/facility-abstract-rosette-330299927">Image used under license from Freestock.com</a>
Air intake of jet engine - Detail of military jet on display at air showImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/air-intake-jet-engine-detail-military-31883287">Image used under license from Freestock.com</a>
Accuracy wood emblem. Vintage.Image used under license from Freestock.com<a href="https://www.freestock.com/free-photos/accuracy-wood-emblem-vintage-427471564">Image used under license from Freestock.com</a>
Accuracy penciledImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/accuracy-penciled-428011096">Image used under license from Freestock.com</a>
Energy rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rosette-286541849">Image used under license from Freestock.com</a>
Accuracy retro style wood emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/accuracy-retro-style-wood-emblem-429042469">Image used under license from Freestock.com</a>
Solution linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/solution-linear-rosette-291777170">Image used under license from Freestock.com</a>
Accuracy written inside a money style rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/accuracy-written-money-style-rosette-420014740">Image used under license from Freestock.com</a>
Solution linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/solution-linear-rosette-286311842">Image used under license from Freestock.com</a>
Accuracy written on a chalkboardImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/accuracy-written-chalkboard-430639687">Image used under license from Freestock.com</a>
Accuracy with denim textureImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/accuracy-denim-texture-432650533">Image used under license from Freestock.com</a>
Energy with rubber seal textureImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-seal-texture-417285079">Image used under license from Freestock.com</a>
Energy gold shiny emblem with pink backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-gold-shiny-emblem-pink-background-270794927">Image used under license from Freestock.com</a>
Energy gold shiny flowerImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-gold-shiny-flower-268771340">Image used under license from Freestock.com</a>
Energy on blackboardImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-blackboard-423693499">Image used under license from Freestock.com</a>
Energy rubber textureImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-texture-359677451">Image used under license from Freestock.com</a>
Energy golden emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-golden-emblem-373241833">Image used under license from Freestock.com</a>
Energy grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-grunge-seal-345787583">Image used under license from Freestock.com</a>
Energy card or bannerImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-card-banner-371280700">Image used under license from Freestock.com</a>
Energy gold shiny emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-gold-shiny-emblem-377687380">Image used under license from Freestock.com</a>
Energy rubber grunge texture stampImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-grunge-texture-stamp-353681249">Image used under license from Freestock.com</a>
Energy rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rosette-344848769">Image used under license from Freestock.com</a>
Skylight and supporting wallImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/skylight-supporting-wall-1064757">Image used under license from Freestock.com</a>
Energy rubber sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-seal-317265146">Image used under license from Freestock.com</a>
Energy rubber sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-seal-309002855">Image used under license from Freestock.com</a>
Energy rubber grunge stampImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-grunge-stamp-294925838">Image used under license from Freestock.com</a>
Energy gold shiny emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-gold-shiny-emblem-302772272">Image used under license from Freestock.com</a>
Energy shiny badgeImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-shiny-badge-301485698">Image used under license from Freestock.com</a>
Energy rubber sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-seal-288330686">Image used under license from Freestock.com</a>
Energy shiny emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-shiny-emblem-291511232">Image used under license from Freestock.com</a>
Energy rubber grunge stampImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-grunge-stamp-287825057">Image used under license from Freestock.com</a>
Energy linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-linear-rosette-310771577">Image used under license from Freestock.com</a>
Energy rubber grunge stampImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rubber-grunge-stamp-283032137">Image used under license from Freestock.com</a>
Energy linear rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-linear-rosette-287516531">Image used under license from Freestock.com</a>
Energy rosetteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-rosette-291512354">Image used under license from Freestock.com</a>
Skylight and ribbed concrete wallImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/skylight-ribbed-concrete-wall-1066244">Image used under license from Freestock.com</a>
Energy grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-grunge-seal-286030643">Image used under license from Freestock.com</a>
Energy gold shiny badgeImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-gold-shiny-badge-286901423">Image used under license from Freestock.com</a>
Energy gold shiny badgeImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/energy-gold-shiny-badge-283711664">Image used under license from Freestock.com</a>
Caucasian businessman holding lightbulbs which are flying out from his handsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/caucasian-businessman-holding-lightbulbs-flying-hands-792753373">Image used under license from Freestock.com</a>
Skylight shadows on supporting wallImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/skylight-shadows-supporting-wall-1068881">Image used under license from Freestock.com</a>
Caucasian businessman holding lightbulbs which are flying out from his handsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/caucasian-businessman-holding-lightbulbs-flying-hands-1007374927">Image used under license from Freestock.com</a>

POPULAR SEARCHES