Where does Solar Container work on site?
In short: wherever the facilities consume energy mainly during the day and the loads have a reasonable power draw. Solar Container powers well:
- office containers,
- welfare and sanitary containers,
- facility lighting,
- computers, monitors, printers and routers,
- monitoring and security systems,
- telecom equipment,
- charging of power-tool batteries,
- selected technical devices,
- loads running after the shift too, once energy storage is added.
At sites without grid access the system can work with energy storage and a generator. The generator then does not have to be the only source, it can play a supplementary role. Solar Container comes in two directions: Enphase for grid, hybrid and backup use, and Victron for off-grid operation and generator integration.
Why is powering site facilities a special problem?
A classic PV installation is tied to a specific property by design. It is engineered for a given roof or plot and usually stays there for years.
A construction site works differently. Today you need two containers, in a few months six. The site office may be moved to another part of the plot, and once the project ends the whole setup is dismantled and travels on.
That is why in construction it is not only the cost of energy that matters, but also the mobility of its source. Solar Container uses the existing container roof and creates a power source that follows the site facilities. The frame can be dismantled, transported and reused on the next project.
What is Solar Container?
Solar Container is not a handful of panels screwed onto container sheet metal. Its basis is a dedicated steel frame for container infrastructure. One frame holds six 485 Wp PV modules, about 2.91 kWp of peak power. The structure is around 160 mm high, hot-dip galvanised for corrosion protection and prepared for transport and installation with a crane or forklift.
Base configurations
| Configuration | PV modules | Power |
|---|---|---|
| 1 frame / 20' container | 6 × 485 Wp | approx. 2.91 kWp |
| 2 frames / 40' container | 12 × 485 Wp | approx. 5.82 kWp |
| 3 frames / 2× 20' container | 18 × 485 Wp | approx. 8.73 kWp |
Important: PV power is not the same as the amount of energy available around the clock. Real production depends on sunlight, season, location and shading. That is why the configuration is matched to the loads and their usage profile, not the other way round.
Three ways to use Solar Container on site
Not every site needs off-grid and not every one has a stable connection. More important than "how many panels?" is the question: how should the whole site energy setup work?
1. Site with grid access
If the facilities have a connection, Solar Container reduces the power drawn from the grid during PV production hours. The natural choice is the Enphase variant: microinverters and per-module monitoring, with the option to add storage and backup for selected loads. A good fit for longer projects with extensive office facilities.
2. Site with limited or unstable supply
The grid is there, but not always enough, or you want more resilient facility power. Architecture: PV + grid + energy storage. Solar energy covers part of the current demand and charges the storage, while the other sources balance the rest.
3. Site without grid access
The most interesting case: facilities where there is no connection, or building one at this stage is not justified. The Victron variant can run off-grid and work with a generator.
Can Solar Container replace a generator on site?
It can reduce its use and, in well-matched setups, enable periods without the generator. Do not assume, however, that it always replaces it entirely. That is an important distinction.
If the facilities mainly consume energy for lighting, computers, monitoring, electronics, routers and charging small devices, a well-sized PV system with storage will cover a large part of those needs. It is different with large loads:
- electric heaters,
- compressors and welders,
- high-power tools,
- pumps and heating devices,
- construction machinery.
Then the instantaneous and daily demand can far exceed the capability of a single frame.
Make the generator run when it is truly needed, instead of powering the small facility loads for hours on end.
The biggest advantage: energy you can take to the next site
In a classic PV installation part of the value is permanently tied to one property. Here it is different. Once the project ends, the frame can be:
- disconnected,
- dismantled,
- transported,
- mounted on a container used at the next project.
The structure is prepared for transport with a forklift or crane slings, and the documentation covers mounting on 20' containers, two-frame configurations on 40' containers, and a three-frame layout on two 20' containers.
For a construction company this is a different way of looking at the investment: you are not buying an installation for one site, but an element of your own mobile technical facilities that works across successive contracts.
Photographs from an actual installation of Solar Container frames on containers. Click a photo to enlarge.
Where can the energy from Solar Container be used?
Office container
Computers, monitors, printers, routers, lighting and chargers usually run during PV production hours. That means a high level of on-site energy use.
Welfare container
Lighting, electronics and part of the welfare equipment can be powered by PV. High-draw appliances should be accounted for individually during balancing.
Site monitoring
Cameras, LTE/5G routers, recorders and alarm systems have a fairly steady profile. With storage, such loads can be sustained outside PV production hours too.
Storage and technical facilities
The system can support lighting, security systems, telemetry and the charging of selected devices and batteries.
Security post
A security container often runs around the clock. Then the right sizing of storage and a backup source becomes especially important.
7 benefits of Solar Container on site
- Mobility. The system can serve successive projects instead of staying in one place.
- Using existing surface. The modules sit above the container, so you do not use extra site space.
- Less generator runtime. In a hybrid setup PV and storage take over part of the demand, leaving the generator as a supplementary source.
- Less noise. When loads run on PV and batteries, the generator can stay off, which matters on urban sites.
- Scalability. One frame can be the start of a system that grows with the number of containers.
- Different architectures. Grid, hybrid or autonomous, depending on technology and needs.
- Reuse. The same system can serve more than one site in its life cycle.
And what are the limits?
A professional solution should not be judged only by a list of advantages. Solar Container has limits too, and it is worth knowing them before deciding.
Production depends on the weather
PV is not a stable 24/7 power source. At night it produces nothing, and on cloudy days output drops. For independent supply you need well-sized energy storage, often with an additional backup source.
One frame will not power a whole large site
2.91 kWp is a valuable source for the facilities, but do not confuse it with a source of tens or hundreds of kilowatts for heavy construction equipment.
Shading matters
Cranes, other containers, buildings and stored materials can periodically limit sunlight. The container position is worth analysing for PV production too.
A construction site means dust and dirt
Modules need periodic inspection and cleaning. The structure uses a very low panel tilt (1°), so the module surface should be checked regularly.
Energy needs must be calculated
The biggest mistake is to start with "how many frames should I buy?". First you need to know what should be powered, when and for how long.
How to match Solar Container to a specific site
Step 1. Define the loads
Device power, run times, day and night load, and the largest simultaneous demand.
Step 2. Define the available sources
Is there a grid on site? A temporary connection? A generator? Should the location run fully without the grid?
Step 3. Choose the number of frames
Options start at one 2.91 kWp frame and can grow into larger modular layouts.
Step 4. Choose the energy architecture
Enphase, mainly grid, hybrid and backup projects. Victron, off-grid solutions and setups working with a generator.
Step 5. Size the energy storage
Capacity should not follow PV power alone, but how much energy needs to be available when the modules are not producing.
Does Solar Container pay off for a construction company?
There is no single honest answer for every site. The main factors are:
- the duration of the project,
- the number of successive projects where the system will be used,
- energy cost and grid availability,
- generator fuel and service cost and its running hours,
- the facility energy consumption,
- the number of frames and storage size.
That is why we do not promise a universal payback period. In a mobile system, though, one thing matters that a typical rooftop installation lacks: Solar Container can work on successive projects.
Solar Container is not a rival to every generator. It is a way to manage site energy more intelligently: use the sun, store surpluses, power well-matched loads, work with the grid or a generator, and move to the next project once the job is done.
Have container facilities on site? Let us start with an energy balance
You do not need to know whether you need Enphase, Victron, one frame or three. Send us:
- the number and type of containers,
- the project location,
- the basic devices to be powered,
- information about grid access,
- whether you use a generator.
On that basis we can recommend the right direction for the solution.
