November 2024 EnergyWiseSM Tip: Night Lights

November 14, 2024

By: NPPD Energy Efficiency Program Manager Cory Fuehrer


For something as ubiquitous as electric lighting, it may be hard to imagine a time when our homes were without it. However, using electricity for residential illumination only became common in in the United States during the 1940s. Since then, we’ve been extending our days into our nights, often with a flick of a switch.

Consider that almost everyone has a light or a number of lights they rely on to nurse their night owl tendencies. Why wouldn’t you want efficiency, quality and the most overall value from those essential fixtures? Here are a few of the most common, including opportunities for their improvement:

Ceiling fixtures

Around 2500 BC, the ancient Egyptians began using the first known ceiling lights. Made from clay, these lamps burned animal fat, bees wax or plant-based oils including olive, sesame and grape-seed. Fast-forwarding to the 1950’s, almost all residential ceiling lights required incandescent bulbs. While much safer and efficient than producing light from combustion, about 90% of the electricity they consumed produced heat rather than light. Today, homeowners can select light-emitting diode (LED) replacement bulbs that require six to seven times less electricity to produce the same amount of light while lasting up to 12 times longer. Another option consumers have is to install fully dimmable LED replacement bulbs and the appropriate dimmer switch. By doing so, users can adjust light levels to their desired effect. For even greater energy efficiency and longevity, consider replacing an old fixture with a solid-state LED fixture. Many are also fully dimmable. Solid-state fixtures have embedded LEDs so bulb replacement is no longer necessary.

Plug-in lamps

It is common to leave a wall or table lamp on for someone needing to pass through an area of the home after everyone else has gone to bed. In 1902, bulbs with two carbon filaments were created to allow for adjustable lighting levels. Shortly thereafter, manufacturing of lamps with multi-level switches allowed homeowners to select multiple illumination levels. This reduced the amount of electricity used when minimal levels of illumination were appropriate. With a simple twist of the switch, full lighting levels could be restored. As with other socket-type fixtures, improving efficiency is as simple as replacing older incandescent bulbs with three-way LED replacement lamps.

Outdoor sconces and pathway lights

Especially as we enter the winter season and our nights become longer, exterior lighting becomes a matter of maintaining safety. Sidewalks can become snow or ice-covered, which creates slipping hazards. While converting these to LED is an easy option to improve efficiency, when was the last time you cleaned these fixtures? Over the past forty years, The Illuminating Engineering Society has commissioned several luminaire dirt depreciation studies to find that outdoor fixtures can lose 11 to 29 percent of their light output due to outdoor environments. A simple way to reestablish their lighting levels is to add “fixture” cleaning to your fall routine. After a season of dusty winds, lawn mowing and plants pollenating, this is the perfect time to restore their functionality.

Plug-in lights

How easy is it to plug a small night-light into an electric socket to provide a little extra illumination where you need it? Though they may only require between 2 and 7 watts of power, many operate continuously and do not switch off during the day. Over the course of a year, they can double the amount of energy needed to provide that small amount of extra safety and security. Instead, install an LED night light with a photosensor switch. Most require one watt or less of power to operate and automatically switch “on” or “off” depending on the amount of light from other sources.

In partnership with Nebraska Public Power District, Southwest Public Power District wants to help you effectively and efficiently light up your night when and where you need it! For additional ways you can save energy every day, contact Southwest Public Power District or visit www.energywisenebraska.com.

June 1, 2026
Southwest Public Power District has an opening for the position of Journeyman power line worker. Duties include, but are not limited to, maintenance and construction of overhead and underground distribution and sub-transmission facilities. The District operating hours are a compressed work schedule with every other Friday off. After-hours and on-call duty are required. This position requires heavy lifting, pole climbing, and other strenuous activity and working well with other crew members. Must be able to complete associated written and electronic documentation. Must possess a valid Class B CDL and pass a pre-employment drug and alcohol test. Southwest Public Power District offers an excellent wage and benefit package, including paid vacation, sick leave, paid health insurance, and funded retirement plan. Southwest Public Power District’s headquarters office is in Palisade, Nebraska. The region’s schools, small communities, and recreational opportunities make it a great place to live and raise a family. Interested individuals must email a resume, including job training and three references to: jobs@swppd.com . Southwest Public Power District is an equal opportunity employer. Applications due by June 30th, 2026.
May 27, 2026
Sometimes, your electric bill might creep up a bit in June, even before the hottest days of summer arrive. The increase often has less to do with extreme heat and more to do with how cooling systems operate early in the season. Air conditioning units that have been idle for months may not run at peak efficiency right away. Dust buildup, clogged filters or minor maintenance issues can make systems work harder from the start. Humidity also plays a role. Early summer air often carries moisture, which makes homes feel warmer and prompts air conditioners to run longer to keep the house cool. Longer daylight hours can contribute as well. More time at home with lights and electronics in use adds to overall energy consumption. To reduce early-season spikes, replace air filters before you ever switch on your a/c. At the same time, schedule routine maintenance and use ceiling fans to help circulate the cool air around your rooms. Setting your thermostat a few degrees higher than usual can also help manage costs without sacrificing comfort. Understanding why June bills climb is the first step toward keeping them in check.
May 20, 2026
Southwest Public Power District will be closed Monday, May 25th, in observance of Memorial Day. Normal business hours will resume Tuesday, May 26th. If you need assistance during this time, please call (308)285-3295 to speak with an on-call representative.
May 20, 2026
As vacation season gets started, it’s easy to overlook the small appliances at home that keep using electricity while you’re away. A quick pre-vacation checklist can give them a vacation, too—and prevent them from wasting energy while nobody’s home. So, before you load up the car or head to the airport, start unplugging. First, the kitchen. Ice makers, second refrigerators and extra freezers can quietly run nonstop. If they’re empty or nearly empty, consider turning them off. Adjust your main refrigerator to a slightly higher temperature but keep it within safe food storage limits. Around the house, unplug electronics like televisions, gaming systems, computers and coffee makers. Better yet, connect them to a surge-protecting power strip so you can unplug them all at once. Many devices draw power even when not in use if they’re turned off but still plugged in. Water-related appliances are another common miss. Turn off or lower settings on electric water heaters if recommended by the manufacturer. Finally, adjust your thermostat. There’s no need to keep your home as cool as when you’re there, but don’t turn the system off entirely. A moderate setting helps manage humidity.
May 13, 2026
By: NPPD Energy Efficiency Program Manager Cory Fuehrer Most homeowners who have heat pumps use them to heat and cool their homes. But a heat pump also can be used to heat water. You may have already seen one of these units in a “big box” or appliance store and wondered what it was and how it worked. Here are the details: Heat pump water heaters use electricity to move heat instead of generating heat directly through electrical resistance. It takes a lot less electricity to transfer heat than it does to generate heat. Therefore, heat pump water heaters can be two to three times more energy efficient than conventional electric resistance water heaters. To move the heat, heat pump water heaters work like a refrigerator in reverse. While a refrigerator pulls heat from their interior and dumps it into the surrounding room, an air-source heat pump water heater pulls heat from the surrounding air and moves it into their internal water tank. Another type of heat pump water heater has indoor and outdoor components that move heat from outside the home. Still others are integrated with other space conditioning heat pump systems, which combine all the required equipment into a single unit located inside home. Stand-alone heat pump water heaters, which contain all the necessary equipment in one unit, require installation in locations that remain in the 40º– 90ºF temperature range year-round. Rooms housing heat pump water heaters should provide at least 500 to 1,000 cubic feet (28.3 cubic meters) of air space around the unit. As heat is transferred into the hot water tank, cool exhaust air can be vented back into the room or ducted outdoors. Ideal locations for installation are in spaces with excess heat, such as a furnace room. The temperature of the room in which the unit is installed will drop when it is operating by 2 F° to 6 F° and perhaps even more during periods of high demand for hot water.  The energy to feed the heat pump water heater can come from passive solar gain, heat from a conventional heating system, the warming effect of soil surrounding a basement wall, or any other heat source. The cooling of air while the unit is operating is especially advantageous in the summer. If the unit is installed in a basement located in a humid region, it also removes moisture from the air, which reduces and may eliminate the need for a separate dehumidifier. Since the heat pump water heater operates as dehumidifier, a condensate drain must be available. In their “heat pump only” mode, heat pump water heaters cannot heat water as quickly as electric resistance water heaters. In this mode, they can only generate about 8 to 10 gallons per hour. To make up for this basic deficiency in performance, heat-pump water heaters are equipped with electric resistance elements that are energized whenever the heat pump cannot keep up with the demand for hot water. This feature improves the performance of the unit but does reduce its overall efficiency. Most heat-pump water heaters have controls that allow a homeowner to choose one of three modes of operation: •Heat-pump-only mode (the most energy-efficient). •Hybrid mode (heat-pump operation plus electric resistance backup). •Electric-resistance-only mode (a mode that you could choose during cold weather, when you might not want the appliance to cool the space where it is located). A study in the northeast U.S. revealed that households installing a heat pump water heater could save between $40 and $270 per year when compared to using an electric-resistance water heater. Savings calculations were based on a family household that uses 35 gallons of hot water per day, with an electricity cost of 17 cents/kilowatt-hour. Lower end savings were seen when the heat-pump water heater was installed in a bad location (a small, cold room). Conversely, the high end of the savings scale was seen when the unit was installed in a good location (a large, warm room). Your local public power provider, in partnership with Nebraska Public Power District, wants to help you make the most from the energy you use to produce hot water in your home or business. For more ideas on saving energy while running your business or home, along with possible EnergyWiseSM energy efficiency financial incentives to help with the cost of upgrading to a heat pump water heater, contact your local utility or visit www.energywisenebraska.com for additional details.
May 6, 2026
The days are getting longer, and that means you don’t need your home’s outdoor lights to automatically turn on quite as early. Take a few minutes this weekend to reset outdoor motion sensors and timers to avoid wasting electricity when natural daylight is available. Walk around your property and adjust timers to match sunrise and sunset schedules. Photocell sensors should trigger lights only when it’s actually dark. Motion-activated floodlights should be properly aimed to illuminate paths without lighting empty spaces. While you’re at it, replace any old bulbs with LED alternatives, which can reduce energy use. Consider smart lighting controls that allow scheduling from your phone or tablet.
April 29, 2026
The month or two between cold and warm weather gives you the perfect opportunity to save energy. Milder temperatures mean heating season is winding down, but it’s not warm enough for air conditioning. Some call this a “shoulder season.” Take advantage of the moderate weather by keeping both the heat and the air conditioning turned off. Instead, open windows to draw in fresh air and turn on ceiling fans. Inspect and seal air leaks and clean AC filters. Open blinds, curtains and shades during daylight hours to reduce the need for electric lighting. The shoulder season is brief, so forming smart habits now can keep energy bills lower while the outdoor weather keeps your home naturally comfortable.
April 22, 2026
April is a great time to plant a tree. Arbor Day is April 24 this year, and people all over the world will plant trees in their yards and communities. The day is a reminder that spring is the season to think long term about your home’s energy use. Planting trees, shrubs or climbing vines now can provide natural cooling in the summer and save energy on air conditioning. Deciduous trees—the ones that shed their leaves in the fall—are particularly effective for energy efficiency because their lush leaves shade your home and yard in the summer and then allow sunlight to shine through your windows in the winter after their leaves fall. Position trees on the south and west sides of your house to block harsh afternoon sun. Fast-growing trees, like maples or lindens, offer benefits within a few years, while slower-growing species add long-term value and curb appeal. Shrubs and vines can shade walls and windows while enhancing landscaping. A trellis with vines near sunny windows can reduce heat gain, lowering cooling costs. Beyond energy savings, planting trees improves air quality, supports wildlife and adds value to your property. When selecting plants, consider native species that require minimal water and maintenance. By planting shade this spring, you’ll enjoy cooler indoor temperatures, and you could lower your heating and cooling bills.
April 15, 2026
Spring rain is good for flowers. It is not good for extension cords. Water and electricity, as you know, are a risky mix. April is a smart time to check your outdoor setup before yard work and storm season begin. • Start with your cords. If a cord is cracked, frayed or warm when in use, replace it. Do not tape it. Do not run it through puddles. Keep connections off the ground and out of wet grass. • Plug outdoor tools only into outlets protected by a ground fault circuit interrupter, or GFCI. These are designed to shut off power fast if something goes wrong. Test them each month. Push the “test” button. Then reset. • Using power tools in a damp garage or driveway? Dry your hands. Wear shoes. Keep cords away from metal and standing water. • Never pull a plug by the cord. Grab the plug itself. Yanking the cord can loosen wires and create a shock hazard later. • Store cords indoors when you’re finished using them outdoors. Sun and rain break them down over time. • If you use a generator during storms, keep it outside and far from doors or windows. Never plug it directly into a wall outlet. Small steps matter. A quick check now can prevent injuries later.
April 10, 2026
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