Solar vs Mains Cameras When the Site Already Has Power

The answer: the camera is never the expensive part of a wired install

Even on a site that already has mains power, a solar 4G camera is usually the cheaper option the moment it needs to sit beyond an easy cable run from an existing outlet and an existing switch. A wired installation is not priced by the camera. It is priced by the trench, the conduit, the certified labour, the spare switch port, the network drop and the permission to open the ground in between — all of which scale with distance, while a solar 4G camera costs the same whether it goes on the office wall or on a post at the far gate. Inside an existing building with conduit already run, wired wins comfortably. Once the cable has to leave the building, the arithmetic flips fast, and keeps flipping further toward solar with every metre.

The rest of this article is how to prove it on your own site with your own local rates.

"The site has power" and "there is power where I need the camera" are different sentences

A farm with a meter, a warehouse with a distribution board, a construction site with a generator — all have power. None of that says anything about the position the camera actually needs to watch. The places that get hit are rarely next to the building: the back gate, the fuel store, the stockyard, the water point, the laydown area at the edge of the site, the field entrance off a public road. The honest question is never "does this site have electricity", but:

• How far is the nearest usable circuit from the camera position?
• How far is the nearest usable network point? A wired camera needs both, not just power.
• What is between the two, and who owns it?

That third question quietly decides most budgets. A hundred metres across your own flat yard is a different job from a hundred metres crossing a haul road, an irrigation line, a neighbour's easement or a standing crop.

Everything a wired quote has to include

When a wired quote comes in cheap, it is usually because half of this list is missing or buried in "sundries":

The solar 4G column of the same table is short: camera and mount, a SIM and a data plan, and the labour to bolt it up — 5–10 minutes per camera. There is no trenching line, because there is no trench.

The costs that only show up later

• Cameras move. A new bay, a relocated stock pen, a gate that turned out to be the real weak point. A wired camera's position is permanent by economics — moving it means paying for the run twice. A solar unit is unbolted and rebolted in an afternoon.
• The cable is a failure surface along its whole length. Rodents, a post driver, a plough, an excavator. It fails at a point you cannot see, and diagnosis means opening the ground again.
• Grid dependence cuts both ways. A mains camera and its recorder go down with the supply, which in rural areas correlates with exactly the weather and exactly the nights people expect cameras to be watching. A solar camera carries its own battery and its own uplink, so a grid failure is not a surveillance failure.

Where wired genuinely wins, and you should use it

This is not a one-sided argument, and a supplier who pretends otherwise is not worth buying from. Wire it when:

• The camera sits inside an existing building with conduit, outlets and trays already there. Two metres of cable to an outlet beats everything.
• There is already a PoE switch with spare ports and an NVR, within a normal structured-cabling run.
• You need many cameras streaming continuously to a local recorder at high bitrate, watched live all day.
• The position is in permanent deep shade with no way to reposition; if an outlet is three metres away, use the outlet.

The catalogue reflects that rather than pretending it away: alongside 4G LTE models there are WiFi models and models carrying both, so a camera near the office can use the site network while a camera at the boundary uses the SIM.

The decision rule: distance and disruption

Two measurements settle most cases. First, the distance from the nearest usable circuit and the nearest usable network point to the camera position. Second, whether any ground has to be opened between them.

If both distances are short, both run along an existing building line, and nothing has to be dug — wire it. If either needs a mid-span cabinet, or the route crosses a track, a crop, a yard in use, or land you do not fully control — the solar 4G unit will almost certainly be cheaper on day one. There is no third case that needs a spreadsheet to resolve.

Build the comparison with your own numbers

Ignore published cost-per-metre figures. Trenching rates, electrician rates and permit timelines are intensely local. Take one real camera position and fill in this worksheet with quotes you actually hold:

• Wired: camera + mount + cable and conduit (metres × your rate) + trenching (metres × your rate) + crossings + electrician hours × your rate + surge protection + switch port or new switch + any mid-span cabinet + share of the recorder + permit + reinstatement + your estimate of yard downtime.
• Solar 4G: camera + mount + SIM and monthly data + install labour (5–10 minutes per camera).

Let the furthest position decide

Then do it again for the furthest camera position on the site, not the nearest. The nearest one flatters the wired option and everybody quotes it first; the furthest is where the budget is actually decided, and it is usually the position that most needs watching.

For the hardware row: the SolaGuard catalogue is 150 SKUs with wholesale prices quoted per order, standard resolution is 1080p–2K with 4K only as a custom or OEM build, outdoor models are IP66, and storage is microSD up to 128 GB as standard. Browse the catalogue to price a specific position rather than a category.

Why the unwired corners are the ones that get hit

Few real sites end up all-wired or all-solar. What survives contact with a quote is a split: wired and PoE in the core, where cable already runs, and solar 4G on everything past the last existing cable — the perimeter, the far gate, the remote shed, the stockyard, the fuel store, the temporary compound that moves again next season. That split also matches where losses actually happen.

Cameras cluster where the cable already is, which means they cluster around the part of the site that is already supervised — the yard people walk through, the door people use, the building with lights on. The places that get emptied out are the ones nobody walks past: the far gate at three in the morning, the plant compound over a four-day public holiday, the stockyard on a Sunday, the second property nobody visits for weeks between harvests.

Those are precisely the positions where a wired install is most expensive, which is precisely why they stay unwatched. The cost curve and the risk curve run in opposite directions, and a solar 4G camera is what flattens the first so you can act on the second.

What kind of camera goes there matters too. A motion-triggered unit at the far gate sleeps until something crosses its detection zone, and misses slow movement, anything at the edge of frame, and anything that happens while it recovers between events. Always-On Video keeps recording continuously at low standby power, using AI scene analysis rather than a passive infra-red trip, and writes to the local card — so the record of a quiet night exists whether or not anything triggered. Our AOV solar camera guide sets out the difference; it is why a remote position deserves the continuous-recording model rather than the cheapest triggered one.

Ordering and commercial terms

SolaGuard hardware is manufactured by Shenzhen Leksell, TÜV Rheinland certified and established in 2012, with CE, FCC and RoHS. Trial orders start at MOQ 10 units; OEM and ODM from 100. Dealer margin is 20% from around 10 units and 30% from around 50, and OEM or private label is available across the catalogue. Samples ship by air in 7–10 days, bulk by sea in 25–40 days, and Vietnamese buyers ship from the Ho Chi Minh City office in 7–10 business days.

The practical first step is small: order a trial quantity, put them on the two or three positions your wired quote priced highest, and compare the invoice you avoided against the one you were about to sign. Dealer terms are here if you intend to resell rather than deploy. To size a trial against a specific site, WhatsApp +86 188 1869 9870 or email info@solaguard.net.