Romania's first mobile photovoltaic plant –
delivered by UZINEX to SC ARS INDUSTRIAL SRL.
We recently delivered Romania's first mobile photovoltaic plant to SC ARS INDUSTRIAL SRL, a partner with over 20 years of presence on the local industrial market, based in Ploiești, Prahova county. The solution: a renewable-energy system integrated into an expandable container that unrolls nearly 60 metres of solar panels directly onto the ground. No building permit, no red tape, no fixed infrastructure. Just transport, unloading, unrolling and energy generation.
ARS INDUSTRIAL SRL, the electric Grundodrill and the on-site power problem.
ARS INDUSTRIAL SRL (CUI 16515321, J2004001267297), a company based in Ploiești, Prahova county, active on the Romanian market since 2004, is one of the established suppliers in the water/sewer works and infrastructure crossings segment. In 2025, it purchased a horizontal directional drilling rig, a Tracto Grundodrill (Germany), 100% electric variant, to expand its operational capacity on sites where open-trench digging is not an option.
The purchase was made through the Just Transition Programme (JTP), Axis P5 Prahova, operation PTJ_A10 “Development of enterprises and entrepreneurship”. The funding line has an explicit requirement: EU funds allocated through the JTP must be spent exclusively on 100% electric equipment, in keeping with the Union's 2030 climate targets and a climate-neutral economy by 2050 (the Paris Agreement). Diesel engines, however efficient, are no longer eligible.
The operational problem appears immediately: the electric horizontal Grundodrill rig needs a steady power supply on site — exactly where the public grid is missing or insufficient. The classic solution, a diesel generator, would have cancelled the very principle the EU money was used for. A solution with fixed panels on the ground or a roof — impossible, because the ARS INDUSTRIAL team moves between sites, and each location has a different terrain profile.
ARS INDUSTRIAL is among the first operators in Romania to integrate a 100% electric horizontal drilling rig into its crossings fleet — a strategic bet they made ahead of most competitors in the water/sewer segment. This is where the UZINEX mobile photovoltaic plant comes in.
Complete independence from the grid
ARS INDUSTRIAL's crossing equipment can run continuously, regardless of the site location. It no longer depends on a three-phase outlet being available on site or on the logistics of a diesel generator with a permanently fuelled tank.
Compliance with EU funding requirements
The energy produced is 100% renewable, with no direct emissions. That makes the entire operating chain eligible under current and future EU funding lines, which require the exclusive use of 100% electric equipment.
Zero operating cost on fuel
Compared with an equivalent diesel generator, the mobile photovoltaic plant completely eliminates the monthly diesel expense. Over the operating lifetime of the crossing equipment, the savings far exceed the cost of the plant.
Contract awarded through a public tender, based on ARS INDUSTRIAL's own specification. UZINEX won the tender with a compliant technical-commercial offer, value €52,000 + VAT for the smallest model in our range of mobile plants.
24 kW of panels, 52 kWh of storage, a 24 kW inverter — all in a 3×2.5 m container that fits on any standard transport.
- Container
- 3 × 2.5 m · expandable across the panel width
- Total weight
- ≈ 4 tonnes (with integrated batteries + panels)
- Container handling
- Loading / unloading with a crane · standard road transport
- Solar panels
- 24 kW installed · ≈ 60 m unrolled on the ground
- Battery storage
- 52 kWh · industrial Li-Ion
- Inverter
- 24 kW · industrial off-grid
- Outlets
- 380V three-phase (for the Grundodrill) · 220V single-phase · EV charging
- Battery cooling
- Internal air conditioning, automatic
- Foldable panel system
- On wide rollers for fine positioning on uneven ground
- On-site deployment
- ≈ 30 minutes · 2 operators, after crane unloading
- Topology
- 100% off-grid · no connection, no ANRE, no building permit
- →Smallest model: 3 × 2.5 m container · 24 kW of panels · 52 kWh of storage (the model delivered to ARS INDUSTRIAL).
- →Largest model: 12 m (40') container · up to 160 kW of panels · 620 kWh of storage.
- →Extended applications: sites without a grid connection, mobile events, expeditionary military bases, remote locations.
A 3 × 2.5 m container, ≈ 4 tonnes — unloaded on site with a crane. The foldable panel system has wide rollers for fine positioning on uneven ground. The 60 m of panels unroll across the ground in ≈ 30 min with 2 operators, after the container is unloaded.
A 100% off-grid topology. The power produced by the panels passes through the inverter and is distributed across 3 outputs: 380V three-phase for the Grundodrill, 220V single-phase and EV charging. No grid connection.
An electric Tracto Grundodrill performs a water/sewer crossing beneath an existing road, powered by the UZINEX mobile PV plant. The diesel generator — eliminated. Eligibility maintained for PTJ Prahova.
- 01Public tender specification
ARS INDUSTRIAL publishes the tender under the Just Transition Programme
ARS INDUSTRIAL SRL had an approved funding file under JTP Prahova, operation PTJ_A10. For the mobile photovoltaic plant required to power the electric Grundodrill drilling rig, it published a public tender specification with the required technical specs: expandable container, solar panels, battery storage, 380V/220V/EV outlets, compliance with the funding body.
- 02Bidding
UZINEX identifies the tender and submits a compliant technical offer
UZINEX identified the public tender on the procurement system, analysed the specification and submitted a complete technical offer, configured on the smallest model in our range — a 3×2.5 m container, 24 kW of panels, 52 kWh of storage, a 24 kW inverter, and outlets as required.
- 03Award
UZINEX wins the tender · value €52,000 + VAT
The UZINEX offer was awarded as the best technical-commercial combination for the ARS INDUSTRIAL specification. Contract value: €52,000 + VAT for the smallest model in our range of mobile photovoltaic plants, fully equipped.
- 04Production & delivery
Container assembled, ≈ 4 tonnes, transported to the ARS site in Ploiești
We built the plant to the contractual specifications, including the internal air conditioning that keeps the batteries at optimal temperature under strong sun. Total loaded weight: approximately 4 tonnes. Standard road transport, crane unloading at the ARS INDUSTRIAL site in Ploiești.
- 05Commissioning
30 min deployment · 2 operators · testing on all 3 outlets
The plant was deployed at the customer's site in approximately 30 minutes, with 2 operators and no auxiliary machinery. We validated the panel → inverter → battery → outlet chain across all 3 outputs (380V three-phase for the Grundodrill, 220V single-phase, EV charging). The ARS operators received operating and basic maintenance training.
A transparent note. The plant has only just been delivered — real operating output figures (kWh delivered/month, capacity factor, hours of battery autonomy) will be updated after the first quarters of use on site.
“We have just delivered Romania's first mobile photovoltaic plant — essentially a container out of which nearly 60 metres of solar panels unroll.”
“The advantage is that you don't need a building permit — you simply bring it in, unload it on site, unroll it, and you have power.”
“Right now, European legislation requires that all money coming from EU funds can only be spent on 100% electric equipment.”
Who does a mobile photovoltaic plant solve a real problem for?
The mobile plant is not a substitute for large fixed solar parks. It is a specific solution for cases where mobility, autonomy and funding-body eligibility matter more than the nominal cost per kWh produced.
Replicate the ARS INDUSTRIAL decision for your own case. Pre-filled with the real ARS contract value (€52,000 + VAT for the smallest model in the UZINEX range). Adjust the consumption, operating hours and diesel price to see in how many months it pays back through pure fuel savings alone.
How much does diesel power cost you?
Indicative calculation based on fuel savings only. It does not include eligibility for EU funding (100% electric equipment), diesel engine maintenance cost, or avoided emissions.
ARS INDUSTRIAL also purchased butt-welding machines for large-diameter pipes from UZINEX.
Besides the mobile photovoltaic plant in this case study, ARS INDUSTRIAL is also a UZINEX customer for large butt-welding machines, used on water/sewer lines with industrial pipes (oil & gas, infrastructure, water). Two complementary purchases that cover both horizontal drilling capacity and the correct welding of the installed pipes.
What is a mobile photovoltaic plant and how does it work?
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A mobile photovoltaic plant is a renewable-energy generation system integrated into an expandable container. The container is moved on standard road transport and unloaded on site with a crane (≈ 4 tonnes for the small model delivered to ARS INDUSTRIAL). After unloading, the foldable solar-panel system unrolls directly onto the ground across several dozen metres — 60 m on the ARS model. The energy produced powers the connected equipment directly through the outlets or is stored in batteries for later use. No grid connection, no building permit.
What is the difference between a mobile photovoltaic plant and a fixed solar park?
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A fixed solar park requires a building permit, ANRE approval and a grid connection — a process that takes 9–18 months and involves significant infrastructure investment. A mobile photovoltaic plant eliminates these stages entirely: you transport it, unload it, unroll it and generate energy. ARS INDUSTRIAL reached its decision in less than two months from the first technical discussion.
What applications is a mobile photovoltaic plant used for?
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Typical applications: powering electric equipment on sites without a grid connection (utility crossings, drilling rigs, compressors), power for mobile events, expeditionary military bases, remote locations, temporary infrastructure for construction projects. At ARS INDUSTRIAL, the plant powers a 100% electric crossing rig funded through EU funds.
What power and storage capacity does the plant delivered to ARS INDUSTRIAL have?
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The plant delivered is the smallest model in our range: 24 kW of installed solar panels, 52 kWh of battery storage capacity, a 24 kW off-grid inverter. The container is 3×2.5 m, weighs approximately 4 tonnes fully loaded and expands 60 m of panels onto the ground in 30 minutes with 2 operators. Available outlets: 380V three-phase (for the Grundodrill rig), 220V single-phase and EV charging. The largest model in the range reaches 160 kW of panels with 620 kWh of storage, in a 12 m (40') container.
How much did the mobile photovoltaic plant delivered to ARS INDUSTRIAL cost?
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The contract value awarded through the public tender was €52,000 + VAT for the smallest model in the UZINEX range, fully equipped (24 kW of panels, 52 kWh of batteries, a 24 kW inverter, 3 outlet types, AC for the batteries, a foldable panel system with wide rollers for ground positioning). For larger models, the price scales with installed power and storage capacity. Request a quote for a specific configuration through the contact form.
Why did ARS INDUSTRIAL choose a mobile photovoltaic plant instead of a diesel generator?
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Three concrete reasons. One, compliance with EU funding: the electric Tracto Grundodrill rig was purchased through the Just Transition Programme (PTJ_A10 Prahova), and the funding line requires the exclusive use of 100% electric equipment — a diesel generator would have voided the eligibility of the entire project. Two, operating cost: diesel costs money every month (thousands of euros), solar energy does not. Three, mobility: the ARS INDUSTRIAL team moves between water/sewer sites, and fixed panels cannot follow the rig.
Is the plant eligible under the Just Transition Programme (JTP) or other EU funds?
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Yes. The UZINEX plant produces 100% renewable energy, with no direct emissions, in line with the eligibility requirements of operation PTJ_A10 (Development of enterprises and entrepreneurship), axis P5 Prahova, as well as other eligible counties. It is also compatible with NRRP and POIM/POIDD lines that require 100% electric equipment, in keeping with the Union's 2030 climate targets and a climate-neutral economy by 2050 (the Paris Agreement).
Can the plant be customised for specific needs?
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Yes, the solution is customisable to order. There are no rigid standard models — each plant is adapted to the customer's need: number of outlets, voltage type (220V, 380V, special industrial outlets), storage capacity, container size (from 3×2.5 m up to a 12 m container). At ARS INDUSTRIAL we configured the outlets exactly to their requirement; other customers can ask for more outlets, other voltages or additional equipment.
Do the batteries hold up under strong sun or extreme temperatures?
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Yes. The plant comes from the factory with internal air conditioning that keeps the batteries at optimal temperature, even in conditions of high solar irradiance during the summer months. This extends battery life and maintains the nominal capacity over the long term.
How is the mobile photovoltaic plant transported and unloaded on site?
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The container fits within standard road-transport dimensions (3×2.5 m for the small model, up to 12 m for the largest), so it can be moved between sites with conventional transport. On arrival at the location, the container (≈ 4 tonnes for the small model) is unloaded with a crane. The foldable panel system is fitted with wide rollers that allow fine positioning on uneven ground, with no additional machinery. The whole unloading + deployment operation takes approximately 30 minutes with 2 operators.
The energy transition no longer means only parks of tens of hectares.
Delivering Romania's first mobile photovoltaic plant to SC ARS INDUSTRIAL SRL marks an inflection point for the local market. The energy transition no longer means only photovoltaic parks of tens of hectares, but also flexible solutions that follow the customer to wherever they work.
For companies running projects on EU funds and having to justify the exclusive use of electric equipment — as ARS INDUSTRIAL did — a mobile photovoltaic plant solves three problems at once: compliance with the funding body, operational autonomy and the low long-term cost of energy.
ARS INDUSTRIAL: 20+ years on the market and a strategic bet on 100% electric crossings that few in Romania have the courage to make.
For UZINEX, delivering this plant to ARS INDUSTRIAL was not just a €52,000 contract. It was confirmation that there are beneficiaries on the Romanian market who understand the energy transition not as a bureaucratic obligation, but as a real competitive advantage.
Planning a mobile photovoltaic plant for your sites?
Tell us your power draw, your outlets and where you work — we will configure the plant and prepare the offer. Each plant is built to order, from the 24 kW / 52 kWh model delivered to ARS INDUSTRIAL up to a 12 m container with 160 kW of panels and 620 kWh of storage.
Contact the team→