A box of solar path lights from the hardware store is easy to install this weekend. A wired low-voltage system takes longer to plan and costs more to put in. The problem is that yard doesn’t tell you which one will still look good in three years, and a lot of San Diego homeowners find that out the hard way after the solar lights fade or the wired system gets quoted higher than expected.
How solar and low-voltage systems differ
Solar fixtures carry their own small panel, battery, and LED in one housing. There’s no wire to run and no transformer to buy. You push a stake into the soil, angle the panel toward open sky, and the light charges during the day and switches on at dusk. That’s the whole install.
A low-voltage system works differently. A transformer at the house lowers the voltage, then buried wire carries power out to each fixture. Every light draws from the same source, so brightness and color stay consistent across the yard, and the system runs whether the day was cloudy or clear. The tradeoff is that someone has to plan the wire runs, size the transformer, and either bury the wire themselves or bring in a pro to do it. The pros we connect you with can cover that planning and the physical work through our landscape lighting installation service.
The honest way to frame the choice: solar suits a small area where you want light without committing to a project. Low-voltage suits a yard where you want the lighting to look designed, hold a consistent look at night, and stay reliable for years. Our landscape lighting guide for San Diego goes deeper on fixture types and design principles if you’re leaning toward a wired system.
Where coastal fog, shade, and slopes change the choice
Solar only works as well as the sunlight hitting the panel. That’s where San Diego’s geography starts making the decision for you.
Coastal neighborhoods from Ocean Beach up through Carlsbad see a marine layer that can sit through the morning for weeks at a stretch in late spring and early summer, a pattern locals call “May gray” and “June gloom.” A solar panel under that overcast for half the day charges at a fraction of its rated output. Add mature landscaping, a covered porch, or a north-facing bed, and a solar fixture in deep shade may barely light up at all by 9 p.m.
Inland and East County yards with more consistent sun exposure are a better fit for solar, at least for the parts of the yard that get a clear sky view most of the day. But even inland, a slope planted with shrubs, a pergola, or a mature tree canopy can shade a solar fixture enough to cut its evening runtime short.
Low-voltage doesn’t have that problem because it isn’t drawing power from the fixture’s location at all. A wired light tucked under a dense hedge or on the shaded side of the house lights up exactly the same as one in full sun, because the transformer is doing the work back at the house. On a property with real topography, mature trees, or a mix of sun and shade, that consistency is the practical argument for going wired, regardless of style preference.
How fixture placement affects usable light
Placement matters differently for each system. A solar fixture needs two things at once: a spot where the light is useful at night and a spot where the panel gets sun during the day. Those aren’t always the same six square feet. A path that runs along the north side of a house, shaded most of the day, is a poor candidate for solar even though it’s exactly where you’d want path lighting.
Low-voltage fixtures only have to satisfy the nighttime job. That opens up placements solar can’t reach: up-lighting a specimen tree from a bed that never sees direct sun, washing a shaded courtyard wall, lighting steps tucked under an overhang, or lining a walkway that runs along a fence line in permanent shadow. Because the wire can travel wherever the trench goes, the design isn’t limited by where daylight lands.
This also affects how a system reads as a whole. Solar fixtures tend to get placed wherever the sun cooperates, which can produce an uneven, scattered look: bright spots where panels get good sun, dim or dark gaps where they don’t. A wired system lets a designer choose fixture spacing and beam angle based on what the yard needs to show off, not where a panel happens to work. That’s the difference between lighting that looks intentional and lighting that looks like it was placed by trial and error.
What wiring, controls, and upkeep to compare
Solar fixtures need almost no ongoing attention beyond wiping dust and pollen off the panel and swapping the rechargeable battery when it stops holding a charge, which happens gradually over a couple of seasons rather than all at once. There’s no transformer to fail and no buried wire to worry about, which is part of why solar appeals to renters and anyone who doesn’t want a project.
A low-voltage system asks more of you up front and less of you later, if it’s installed correctly. The outlet requirements for the transformer couldn’t be confirmed from our approved sources. Check with your city’s building department and a licensed electrician before choosing or adding an outlet. Wire has to be buried deep enough to avoid edgers and foot traffic, and every splice should use a sealed, waterproof connector rather than tape, because that’s where coastal systems fail first. Done that way, a wired system runs for years with the main maintenance item being an occasional bulb or transformer swap.
Controls are where low-voltage pulls further ahead. A smart transformer can run multiple zones on separate schedules, dim to different brightness levels, and sync to sunset automatically. Solar fixtures are on or off, no zones, no dimming, no scheduling beyond whatever charge they picked up that day. If you want the front yard on one schedule and a patio on another, or you want to dim everything for a quiet evening outside, that’s a low-voltage feature, not a solar one.
The licensing requirements for work tied to a household electrical panel couldn’t be confirmed from our approved sources. Check with your city’s building department, then confirm any contractor’s license status through the CSLB license lookup. Permit requirements for the low-voltage wiring itself vary by jurisdiction, so check with your city’s building department rather than assuming either system is automatically permit-free.
What to share before we match you with an installer
Before you call, walk the yard at dusk and note which areas actually need light and why: a walkway for safety, a tree or wall you want to feature, a patio you want to extend into the evening. That list matters more than the solar-versus-wired decision, because it tells an installer what the system has to accomplish.
Also worth noting before you call: how much sun each candidate area gets through the day, whether there’s an existing outdoor outlet near where a transformer could sit, whether the yard has slopes or established beds that make trenching harder, and whether you want everything on one look or different zones with independent control. A yard with heavy shade and a lot of mature planting usually points toward low-voltage. A small, sunny patch you want lit without a project, a side yard, a mailbox, a stretch of fence, is often a fair candidate for solar.
If you’re weighing the actual dollar difference between the two approaches, our landscape lighting cost guide for San Diego breaks down what a wired install typically runs by fixture count and wiring complexity. Solar fixture pricing varies widely by brand and quality at the retail level, and since it’s a self-install product rather than a contracted job, we don’t quote it. The bigger cost driver for a wired system is usually fixture count and how much trenching the yard requires, not the fixtures themselves.
When to call us
If your yard has shade, slopes, mature landscaping, or you want zoned control and a consistent look after dark, that’s a low-voltage job worth getting designed and quoted properly. If the plan includes work at your home’s electrical panel, confirm the current requirements with your city’s building department before treating it as a DIY install.
Call us at (760) 400-6355 and we’ll match you with a licensed local pro.