In this expanded guide: Why You Shouldn't Leave Your Porch Light On All Night · This Is The Real Cost Of Leaving Your Porch Light On All Night · Extension cords and permanent outdoor wiring · How to Fix Solar Light Sensor (Fixing Common Solar Light Sensor Malfunctions) · How to Waterproof Outdoor Lights (Key Steps for Lasting Illumination).
Publisher’s update, 27 October 2026: Source-cited corrections were prepared with Codex. Specialist human review is pending; the original contributor’s byline is retained.
Compare the complete lighting system
Check transformer input and output, total load, cable length and voltage drop for the chosen system. Solar runtime depends on panel exposure, battery condition and season; wired systems depend on a suitable power supply and correctly installed outdoor components. Neither an IP label nor a low-voltage lamp makes an improvised connection safe.
For running costs, use input watts ÷ 1,000 × hours × your electricity tariff. Example only: 30 W for five hours each night over 30 nights uses 4.5 kWh; at an assumed $0.20/kWh, that is $0.90. Include transformer losses, battery replacement and maintenance when comparing options.
Among the many questions that occupy the minds of many, is the optimal method to illuminate our landscapes.
With outdoor lighting systems, should you opt for a low-voltage wired system or embrace solar-powered lighting?
In this comprehensive guide, I will shed light on this and ultimately present a verdict on the best lighting system for your needs
Both low-voltage and solar lighting systems can offer impressive levels of illumination, depending on their quality.
However, their fundamental distinction lies in how they are powered and the ease of their installation. One system relies on the boundless energy of the sun, while the other connects directly to the main household electrical system.
Scroll on for a deeper dive into these systems.
Solar Outdoor lights
Solar lights have become all the rage for DIY enthusiasts due to their affordability and ease of installation.
Outdoor solar lights do not require complicated wiring and are usually considered environmentally friendly. These fixtures typically include a photocell (light sensor) that automatically turns the light on at dusk and off at dawn.
The ground stakes are prone to breakage due to animal interference, mowing, or snow removal.
Another issue is the wear of the batteries over time, which limits their power storage capacity and consequently reduces their brightness levels. The need for battery replacement also undermines their environmental friendliness.
Moreover, the light sensor may malfunction, disrupting the proper ON and OFF cycles.
Additionally, solar lights rely on sunlight, making them unreliable during inclement weather or in winter when sun exposure is limited.
Low Voltage wired lighting
Low-voltage lighting systems are commonly connected to the household power outlet through a transformer.
Typically, the installation process involves wiring the lights to a low-voltage transformer using buried cables, which often requires the expertise of a qualified electrician.
These systems may be equipped with a control timer or photocell that automatically turns the lights ON and OFF as needed. Some models can also be integrated into a smart home Wi-Fi system, allowing convenient management of all lights through a handheld device.
Furthermore, low-voltage systems offer great versatility and customization options to meet specific needs.
They provide a wide range of brightness levels, beam spreads, color temperatures, styles, and placement choices.
Although the initial purchase and installation costs may be higher compared to solar-powered alternatives, low-voltage systems generally deliver superior quality and increased flexibility. The fixtures are often crafted from durable materials like brass, copper, or stainless steel, ensuring enhanced longevity. There are also more affordable plastic or aluminum options available.
Solar Vs Low-voltage: Which is better?
If you have limited experience with lighting systems and electricity but are interested in exploring landscape lighting, solar-powered lights may be a suitable choice.
Solar lights have a straightforward installation process as they do not require cables. The cost of solar light systems varies based on the quality and size of the setup.
Some are designed to withstand harsh weather conditions while others may be quite flimsy.
If you prioritize longevity and reliability, wired landscape lighting is the way to go.
But ultimately, the choice between solar-powered and wired lighting depends on your specific needs and budget.
Why You Shouldn't Leave Your Porch Light On All Night
Lights can annoy neighbours
You might be comfortable leaving your lights on, but it might not sit well with your neighbor.
Lights attract bugs
Nothing is as annoying as cleaning after moths and other nocturnal insects that like flying around light bulbs.
If you don’t want to wake up to an untidy porch, consider switching the lights off before bedtime.
Lights consume electricity
The cost of living is rising, and many people are looking for ways to cut expenses.
One such method is by reducing your electricity consumption.
Although modern technology produces energy-efficient bulbs, they still add to your monthly bill.
Motion sensor porch lights
As the name suggests, these lights have inbuilt motion sensors.
However, motion detectors can’t differentiate humans from animals. If a raccoon gets in range, you’ll get a false alarm.
This Is The Real Cost Of Leaving Your Porch Light On All Night
Calculate the cost of overnight lighting
An overnight light’s cost depends on input watts, operating hours and your electricity tariff. Use watts ÷ 1,000 × hours × price per kWh. For example, one 10 W lamp running eight hours for 30 nights uses 2.4 kWh. At an assumed $0.20/kWh, that is $0.48 for the month. Timers and motion controls can reduce hours; balance access needs, neighbours and wildlife rather than assuming light guarantees security.
Financial costs
A substantial porch light cost includes a higher electricity bill.
Using an eco-friendly LED bulb could help reduce the financial cost of leaving your porch light on all night.
The actual consumption is contingent upon the wattage of an LED bulb.
Extension cords and permanent outdoor wiring
Never bury an extension cord for permanent lighting
An outdoor extension cord is for temporary use, not permanent buried wiring. Do not bury one, cover damaged cable with sealant, join cords underground or improvise mains connections. For permanent lighting, have a qualified electrician plan the supply, protective devices, transformer, cable, connectors, burial method and local approvals for the actual site.
Use fixtures and components rated for their exposure and follow their installation instructions. Low voltage at the lamp does not remove hazards at the mains supply or transformer. Keep service routes recorded and locate them before digging. The temporary-cord checks below do not authorise permanent installation.
Sources checked 27 October 2026: ESFI: extension cords are temporary.
There are extension cords built for indoors and the outdoors.
You want to ensure that you use cords made explicitly for the outdoors. They are easy to identify because they are always labeled “for outdoor use.”
Also, note that extension cords are not one-size-fits-all when it comes to their uses.
Therefore, you ought to choose one that is suitable for the specific task you intend to use it for.
Examine The Cords Before Setting Them Up
You want to ensure that the extension cord is in top tier condition before setting it up outside.
Therefore, you ought to do a thorough examination to see if the wires and insulation are okay.
A broken wire or flimsy insulation could be a recipe for trouble.
Unplug And Store the Cords Inside When Not In Use
Like most other electrical appliances, it is wise to unplug them whenever they are not in use.
This minimizes the chances of accidents happening.
Also, leaving the extension cord outside for too long may wear down its insulation, making it more susceptible to shock and fires.
So, unplug the cord and put it away in a safe place as soon as you are done using it.
Prevent Overheating at All Costs
Overheating can cause the cord to spark and cause a fire.
How to Fix Solar Light Sensor (Fixing Common Solar Light Sensor Malfunctions)
Clean the Panel & Sensor
Sometimes the panel and sensor may get covered with dirt and grime causing it to struggle in differentiating between day and night.
Check the Connections
Loose or corroded solder joints can cause issues.
Minimize Light Interference
Nearby light sources, such as streetlights or porch lights, may interfere with the sensor, preventing the lights from turning on or off as required.
Relocate the solar lights to an area without nearby light sources or adjust the interfering light to reduce interference.
How to Waterproof Outdoor Lights (Key Steps for Lasting Illumination)
Waterproofing Requirements
The level of moisture they can handle depends on their Ingress Protection (IP) rating, which ranges from no to high moisture tolerance.
Waterproofing is important. It prevents internal corrosion of the fixture housing and parts such as the socket or lamp. When either or both fail, the light fixture will not work.
Each manufacturer will have a different approach to waterproofing. Consider how the manufacturer has addressed these issues and what materials have been used.
Proper Installation & GFCI Outlets
Properly install your lights and plug them into a Ground Fault Circuit Interrupter (GFCI) outlet.
GFCI outlets cut off the power when current flows along an unintended path such as when the wire comes into contact with moisture. This prevents electrical current from flowing where it shouldn’t and provides a layer of safety.