.KWARTZ .KWARTZ Construction
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Energy independence for industrial plants and corporate groups.

We advise boards and CFOs, and design and deliver energy projects, from a single-plant audit to a portfolio strategy. As the EPC (engineering, procurement and construction) contractor, we are responsible for the agreed scope. Under EPCM, as owner’s engineer, we supervise contractors and protect your technical and contractual interests.

  • For large industrial companies and corporate groups
  • EPC or EPCM: contractor or owner’s engineer
  • 50+ MWp for business and industry
Who we work with

Energy for industry, from SMEs to corporate groups

Installations from 50 kWp: solar PV, battery storage, reactive power compensation and maintenance, in one package with a single point of responsibility.

Manufacturing

Food · chemicals · printing · pharmaceuticals

HACCP/GMP requirements, critical circuits, sensitivity to micro-interruptions. References: Danmis, Ciech/Qemetica, Neuca, Bakoma.

Logistics

Warehouses · logistics centres

Large roofs. One contractor, from the roof load capacity assessment to O&M. References: DHL, MLP.

Multi-site · agriculture

Many sites, one standard

Petrol stations, multi-site networks and large-scale farming, with a portfolio of metering points managed centrally. References: Moya/Anwim, Kombinat Rolny Kietrz.

Companies we have worked for

Two plants, different project scopes

We select solar PV and battery storage to suit how each site operates. These projects show the scope of the completed work.

Aerial view of the plant in Bydgoszcz, with rooftop PV modules and surrounding woodland

Qemetica, Bydgoszcz

approx. 357 kWp · 2024

Installation at an operating chemical plant. We planned the work to keep access routes and passages between buildings clear.

View project details
Aerial view of the Danmis plant in Wyszyny, with PV modules on the roofs, tanks and silos in the background

Danmis, Wyszyny

200 kWp + 261 kWh battery storage · 2025

PV expansion and the addition of battery storage at an operating dairy. The scope covered design, approvals, telecontrol, installation and acceptance.

View project details (in Polish)
Selected project

Makrum. Solar PV with battery storage.

Expected payback is approx. 3.9 years, according to an analysis based on the assumptions adopted. This is a forecast, not a measured operating result.

View projects
How we work with groups

Four phases, from data to commissioning

  1. 01

    Portfolio diagnosis

    Technical audit and energy assessment of the plants, criticality classification, map of supply and power quality risks.

  2. 02

    Energy strategy and procurement

    Load profiles, tariffs and contract terms, price scenarios and a 3–10 year action and investment plan. PPA advice can form part of the scope; the client decides on the commercial terms with the chosen supplier or generator. A recommendation is not a price or return guarantee.

  3. 03

    Design and tender preparation

    Functional and performance specification (PFU), tender documents, bid evaluation, contractor selection and protection of your technical and contractual interests.

  4. 04

    EPC or EPCM delivery

    Under EPC, we are responsible for the agreed scope of design, supply, installation and commissioning. Under EPCM, we supervise as owner’s engineer.

Pre-investment analysis

First a free Energy Review, then only the analysis you need

Lower energy costs, fleet charging, resilience of selected circuits or a multi-year CAPEX plan are different goals. Each needs different data and may lead to a different technology. This stage ends with a comparison of options, not an automatic recommendation of the largest installation.

01

Free Energy Review

A conversation about your goal, an initial look at your invoices and available data, and the main issues. It is not a design, a full feasibility study or a statutory energy audit.

Result: a Savings Map showing opportunities to reduce costs, the data and assumptions behind the estimates, missing information and the recommended next step. The Savings Map also includes an estimated payback period and calculation assumptions. We discuss the detailed investment scope and cost at a further meeting.

Where invoices or a 15-minute load profile (interval data from your meter) are missing, we estimate from typical values for your sector and label the estimate as such. On-site measurements are a separate, paid service. Their scope, price and timing are agreed before work starts.

02

In-depth analysis or feasibility study

A paid analysis with a scope agreed before work starts, for one site or a whole portfolio. It establishes whether the investment is technically and economically justified, and which option makes sense. We match measurements and expert assessments to the project risk.

Result: a recommendation with its assumptions, limitations and risks. If the initial option has constraints, we compare changes in scope or technology, phasing and financing, then agree which option to investigate further.

No downtime

We deliver without stopping your production

Work runs alongside production. We plan the schedule and critical connections in windows agreed with your maintenance team, and confirm any interruptions needed, and how long they will last, before work starts.

01

Analysis and design

Based on data (15-minute load profile, documentation), without going onto the shop floor.

02

Off-site prefabrication

Structures and switchboards are prepared before we arrive on site.

03

Installation while production runs

We adapt installation work to the plant’s operating schedule. Power shutdowns take place during agreed maintenance breaks.

04

Critical connections in an agreed window

A planned shutdown or a weekend, agreed with maintenance.

05

Commissioning and acceptance

Tests, as-built documentation and handover.

Reactive power compensation

Reactive energy charges: start with the invoice

Motors, transformers and drives draw inductive reactive energy. Your distribution system operator (DSO) may charge when the contractual limit for tan φ is exceeded, most often 0.4. Capacitive reactive energy is billed separately. We size reactive power compensation (power factor correction) after checking invoices and measuring power quality. The estimate uses the system cost and the expected reduction in charges; we verify the result after commissioning using measurements and subsequent invoices under comparable operating conditions.

01

Invoices and contract

Reactive energy charges, the tariff and the limit values in your DSO contract.

02

Power quality measurements

Reactive power, harmonics and unbalance, recorded over the plant’s full operating cycle.

03

Identifying the cause

Inductive or capacitive power, harmonics, load variability.

04

Choice of technology

A capacitor bank, a detuned capacitor bank (with reactors) or an active compensator, matched to the actual profile.

05

Installation and commissioning

Switchboard connection, measurements, settings and documentation.

06

Checking the result

We verify the effect after commissioning and watch for profile changes that may require new settings.

We analyse the reactive energy items on distribution invoices and measure the installation over its operating cycle. We then select the compensation system, plan installation and settings, and carry out functional tests. After commissioning, we compare measurements and charges for comparable billing periods, allowing for changes in load and tariff.

Measurements with a power quality analyser and a site visit are charged separately. Their scope, price and timing are agreed before work starts. You can request the initial conversation without booking measurements.

Book power quality measurements →

Three things to check on your distribution invoice

Type of charge

Check whether the invoice lists inductive reactive energy, capacitive reactive energy or both. The names and units on the bill help us establish the next step.

Billing period

Compare actual periods and days covered. One month does not establish the annual pattern or the result of compensation.

How the site was operating

Note changes in shifts, equipment and demand. They help explain the charges and define any measurements needed.

You can book the initial conversation without completing this check. Measurements are a separate paid service with an agreed scope, price and timing.

Book a free Energy Review
Choosing a supplier

Compare two offers on the same assumptions

Record the answers to these six questions. Mark missing information for clarification, align scope and assumptions, then compare prices.

01 · Goal and data

What should change at the site?

Check the goal, the period covered by the 15-minute data, the invoices and any planned changes in demand. All suppliers should use the same inputs.

Ask: Which data did you use, and which changes at our site did you allow for?

02 · Scope and price

What exactly are we paying for?

Compare design, formalities, equipment, installation and connection. For BESS, include the power conversion and control systems. Check exclusions.

Ask: What remains our responsibility, and what costs are outside this price?

03 · Operating assumptions

Where does the forecast benefit come from?

For PV, compare forecast generation and on-site consumption. For BESS, compare power, usable capacity and charging strategy. Check energy price assumptions.

Ask: Show how the system will operate on our consumption profile.

04 · Site constraints

How will installation fit into our operations?

Check the roof or equipment location, electrical connection, grid constraints and planned outages. Separate contractor dates from those controlled by the DSO.

Ask: What needs modifying, and when would the works interrupt the power supply?

05 · Acceptance and handover

How will we check the completed works?

Compare measurements, functional tests, as-built documents and operator training. For BESS, specify tests of the agreed control functions.

Ask: Which test results, documents and monitoring access will we receive?

06 · Warranty and service

Who will support us after commissioning?

Compare equipment and workmanship warranties separately from service. For batteries, check the cycle and capacity-retention conditions, not just the number of years.

Ask: What is covered, which inspections are required, and what response time is agreed?

Review the scope with finance and maintenance. The checklist supports a decision; it does not confirm technical suitability or savings. You can request a conversation before completing it.

Book a free Energy Review
Investment financing

A financing model that fits the group’s CAPEX policy

We help you choose one of six financing models: a power purchase agreement (PPA), a virtual PPA (vPPA), PV as a service (PVaaS), an energy service company (ESCO) contract, subscription or leasing. We work with funds that finance PPA projects and support applications under Polish and EU funding programmes, including sector funds for energy-intensive industry.

Let’s discuss financing your investment

After commissioning

O&M, including installations built by other contractors

We also look after installations we did not build. A takeover starts with an electrical audit of the whole installation.

Operations and maintenance →

Questions from boards and finance teams

How does EPC differ from EPCM (owner’s engineer)?

Under EPC, we are the general contractor: responsible for design, supply, installation and commissioning, with one warranty for the whole scope. Under EPCM (engineering, procurement and construction management), we act as owner’s engineer: we supervise the process, evaluate bids and protect the client’s technical and contractual interests, while selected contractors carry out the works. EPC transfers delivery risk to one partner; EPCM leaves the group in control of contractor selection across a dispersed portfolio.

How do you handle cybersecurity and integration with OT/SCADA?

An energy installation becomes part of the plant’s control layer, so we treat it as part of OT security, not just an investment. We design network segmentation, access control for the energy management system (EMS) and monitoring systems, and integration with the existing SCADA so that no new attack vectors are created. We carry out monitoring in line with IEC 61724-1 and protect critical circuits with a redundant power supply.

How do you manage a multi-site portfolio and keep one standard?

We start with a portfolio diagnosis and, on that basis, build the group strategy, financial models (LCOE/NPV/IRR) and a 3–10 year investment plan with resilience priorities and a CAPEX schedule. We set one design standard and one reporting system for the whole portfolio, and confirm the scope of responsibility separately for each site.

Do you support ESG reporting, and are you independent of manufacturers?

Yes. We provide data on energy production and avoided CO₂ emissions for ESG and CSRD reporting, and investment in energy independence directly reduces the group’s carbon footprint and Scope 2 emissions. We represent the client’s interests, not those of a technology manufacturer or distributor: our recommendations follow from data and audits, not commissions.

Are there hidden costs in battery storage maintenance and degradation?

No. Before the decision, we set out the total cost of ownership (TCO) in full: service and monitoring (O&M), insurance and the cost of any replacement at the end of the operating period. The design allows for natural cell degradation. Its rate depends on the technology and the operating profile, and warranty parameters are confirmed in the selected manufacturer’s specification. The decision rests on TCO, not on CAPEX alone.

How do we know the yield and savings forecast has not been inflated in a spreadsheet?

Our proposals are based on your 15-minute load profile from the DSO, actual self-consumption, the tariff and the capacity charge. We run the calculations in professional design software, and the figures can be checked. After commissioning, monitoring tracks actual yields.

Which equipment draws or supplies reactive power?

Motors, transformers and drives are among the loads that draw inductive reactive power. Long cables and some LED power supplies, UPS units and inverters can contribute capacitive reactive power. The result depends on their design, settings and operating conditions; measurements establish what is happening at the site.

How can a business reduce reactive energy charges?

We first use electricity bills to identify inductive charges, capacitive charges or both. Measurements then guide the choice of capacitor banks, shunt reactors or a static var generator (SVG). Measurements after commissioning confirm the reduction achieved.

Next step

Let’s start with the data from one plant or the whole portfolio.

The free Energy Review ends with a Savings Map: figures for your plant, missing data and the next step.

We reply within 24 hours.

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