Industrial integrator · Romania
Uzinex — utilaje & echipamente pentru industrie
All case studies
Renewable energy · mobile plant· Ploiești, Prahova· 2025

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.

24 kW
Installed solar panels
52 kWh
Battery storage
24 kW
Industrial inverter
01 / Client card · public ONRC data
Legal name
SC ARS INDUSTRIAL SRL
VAT / CUI
16515321
Reg. no.
J2004001267297
Date founded
15.06.2004
Registered office
Ploiești, Prahova county
Turnover
10,509,758 RON
Core activity
Water/sewer · infrastructure crossings
Purchasing decision-maker
Popescu Minel
Powered equipment
Tracto Grundodrill electric (DE)
Funding line
JTP Prahova · A10 entrepreneurship
Year of delivery
2025
Contract value
€52,000 + VAT · PV plant
02 / Client context · water/sewer crossings with an electric Grundodrill

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.

03 / Why ARS INDUSTRIAL chose this plant
A

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.

B

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.

C

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.

04 / The delivered configuration · the smallest model in the range
Mobile photovoltaic plant · expandable container

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
Full range · scales with your need
  • 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.
Request a configuration for your need
Mobile photovoltaic plant deployment diagram — a 3×2.5 m container that expands 60 metres of solar panels onto the ground in 30 minutes with 2 operatorsDEPLOYMENT · 30 MIN · 2 OPERATORScontainer 3 × 2.5 m · 4 tonnes · unloaded with a cranecraneloading / unloadingUZINEXPV-MOBILE 24kW≈ 60 m of panels unrolled on the groundUZX-PVREV. AL 60 mARS-0014 TONNESCRANE
Diagram 1 · deployment

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.

Mobile photovoltaic plant power flow diagram — from the solar panels through the industrial inverter and Li-Ion battery storage to the 380V, 220V and EV charging outletsPOWER FLOW · OFF-GRID24 kW panels · 52 kWh storage · 24 kW inverterSUNPANELS · 24 kWDCINVERTER24 kWBATTERY52 kWhAC380V 3-phaseGRUNDODRILL220V singleEVchargingno grid connectionno building permit · no ANRE approvalUZX-PVREV. AOFF-GRIDARS-0013 OUTPUTSDC→AC
Diagram 2 · off-grid power flow

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.

On-site application — an electric Grundodrill rig performing a water/sewer crossing beneath a road, powered off-grid by the UZINEX mobile photovoltaic plant delivered to ARS INDUSTRIALAPPLICATION · OFF-GRID CROSSINGelectric Grundodrill + mobile PV plant · zero dieselroad · no trenching aboveTRACTOGRUNDODRILL eexit point380V cable · 100% solar powerUZINEXPV 24kWGENERATORDIESELeliminated · eligible for PTJ PrahovaUZX-PVREV. AGRUNDODRILLTRACTO ePTJ-A10ARS-001
Diagram 3 · on-site application

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.

05 / How it unfolded · from the first discussion to commissioning
  1. 01
    Public 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.

  2. 02
    Bidding

    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.

  3. 03
    Award

    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.

  4. 04
    Production & 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.

  5. 05
    Commissioning

    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.

06 / Results at delivery · what we can measure today
€52,000
Contract value · mobile PV plant
Price + VAT for the smallest model in the UZINEX range of mobile photovoltaic plants, fully equipped: 24 kW of panels, 52 kWh of storage, a 24 kW inverter, 3 outlet types, AC for the batteries, a foldable panel system on wide rollers.
≈ 75 kWh/day
Estimated average annual output
A conservative estimate for 24 kWp in Romania (≈ 1,150 kWh/kWp/year), spread across ≈ 8,500 sun-hours per year. In the summer months output rises to 110–120 kWh/day.
≈ 5.2 h
Battery autonomy at 10 kW draw
52 kWh of storage / 10 kW continuous draw = ≈ 5.2 hours of operation on batteries alone. At a 5 kW auxiliary draw — ≈ 10.4 hours. Enough to keep operations running through the night or on days with low solar irradiance.
≈ 30 min
Deployment time · 2 operators
From transport to the first kW at the outlet: 30 minutes, 2 operators, no auxiliary machinery. By comparison, an equivalent fixed installation takes 9–18 months with a permit and ANRE grid connection.
0
Building permits · 0 ANRE
A mobile plant, not a fixed installation. No building permit, no ANRE approval, no grid connection. Transport, unload, unroll, generate.
PTJ_A10
Confirmed funding eligibility
100% renewable energy, with no direct emissions. Compatible with operation PTJ_A10 of the Just Transition Programme Prahova and with other funding lines that require 100% electric equipment.

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.

07 / Delivery walkthrough · UZINEX
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.
Walkthrough · UZINEX · ARS INDUSTRIAL delivery
Video transcript excerpt · 2025
08 / Applicability · who it is right for

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.

Water/sewer · crossings · municipal infrastructure
Exactly the ARS INDUSTRIAL case — electric horizontal Grundodrill rigs, compressors, pumps, heavy electric power tools — on sites without a public-grid connection.
EU funding beneficiaries · 100% electric equipment
JTP Just Transition, NRRP, POIM/POIDD, AFIR — all the lines that require 100% electric engines. The plant secures eligibility for the duration of the operation.
Defence & military use
Expeditionary camps, temporary bases, military tents, mobile command posts. Silent operation (reduced thermal/acoustic signature versus diesel) and full autonomy in the field.
Public events · festivals
Mobile stages, TV control rooms, food courts, industrial fairs. Clean power, without the daily diesel logistics and with no on-site emissions.
Spontaneous hospitals · medical tents
Mobile ICU modules, triage tents, campaign vaccinations. Air conditioning and medical equipment powered continuously, including on batteries at night.
Disaster zones · emergency operations
Floods, earthquakes, fires — locations where the public grid is unavailable and fuel logistics are difficult. The plant deploys on any terrain in 30 min.
Construction & general infrastructure
Remote sites, roads under construction, railway works, long-distance energy works — any place where bringing in a three-phase connection would cost more than the plant.
09 / Calculator · what diesel costs you vs. a mobile PV plant

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.

Diesel generator vs. mobile PV plant · payback estimate

How much does diesel power cost you?

4 L/h
8 h
22 days
8.2 RON/L
52,000 EUR
4.97
Estimated result
Diesel cost/month
5,773 RON
≈ 1,162 EUR/month
PV plant payback
44.8 months
Saved in year one
-38,062 EUR
after recovering the investment
Saved over 5 years
17,692 EUR
Request a quote for my plant

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.

10 / ARS INDUSTRIAL · the second UZINEX contract

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.

11 / Frequently asked questions · mobile photovoltaic plant

What is a mobile photovoltaic plant and how does it work?

+

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?

+

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?

+

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?

+

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?

+

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?

+

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?

+

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?

+

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?

+

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?

+

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.

12 / Conclusion · autonomous energy has entered a new stage

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.

Credit where it is due · the pioneer

ARS INDUSTRIAL: 20+ years on the market and a strategic bet on 100% electric crossings that few in Romania have the courage to make.

2004 →
uninterrupted presence
Founded on 15 June 2004 (J2004001267297), ARS INDUSTRIAL has operated for over 20 years in the water/sewer and crossings segment. Stability matters on infrastructure contracts.
10.5M lei
turnover
A financially mature company, with a proven ability to take complex projects from specification through to commissioning.
Pioneer
electric Grundodrill
Among the first operators in Romania with a 100% electric horizontal Tracto Grundodrill drilling rig — a bet most competitors still do not make.
PTJ_A10
EU money well spent
It used the Just Transition Programme Prahova funds for exactly what they are intended: 100% electric technology, compliant with the Union's 2030 targets.
Own spec
in-house technical expertise
It drafted the tender specification itself — it knew exactly what plant it needed to power the electric Grundodrill on site. A sale among equals.
Popescu Minel
decision-maker · local visionary
The decision to invest in an electric Grundodrill + a mobile PV plant reflects a long-term strategic vision — not just for the current project, but for the fleet's next operational chapter.

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.

Talk to an engineer

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