.KWARTZ pairs construction and maintenance with economic analysis. First we check whether the investment is in the client’s interest. Only then do we choose technology that can be safely designed, built, insured and maintained.
The 15-minute load profile, invoices, the contracted capacity agreed with the distribution system operator (DSO), the grid connection, the roof, documentation and operating constraints matter more than the system’s nameplate capacity.
If the initial option has constraints, we compare technologies, installation locations, scope, phasing and financing. We set out technical conditions, costs and risks so we can agree the next steps together.
A project does not end at installation. Monitoring, documentation and service matter for the system’s entire working life.
First the contractor’s warranty, then ongoing maintenance. Today we have more than 10 MW under operations and maintenance (O&M).
See our O&M scope →
approx. 357 kWp · 2024
Design and installation of rooftop PV at an industrial plant, including commissioning and acceptance documentation.
View project details
1.5 MWp · 2025
A ground-mounted solar farm with its own grid connection and transformer substation, delivered under a design-and-build contract.
View project details
CEO, Kwartz Group · energy decisions and strategy
Responsible for the group’s direction, energy strategy, board-level discussions and sales. Links technical decisions to investment economics.
Technical Director · Kwartz and Kwartz Construction
Co-owner of Kwartz Construction. Responsible for the technical side at both companies: design, installation, electrical testing, safety and preparing installations for ongoing maintenance.
Project Delivery Director · Kwartz
Co-owner and Vice-President of Kwartz Construction, and Project Delivery Director at Kwartz. At Kwartz she is responsible for team coordination, schedules and delivery of the agreed scope, through to documentation and formal acceptance.
Finance Director · Kwartz and Kwartz Construction
Responsible for finance, accounting and financial control. He works with sales on budgets and quotes and, at the client’s request, helps compare the investment case and funding options.
Site data and the 15-minute load profile (interval data from your meter), a recommendation that weighs constraints against the investment case, and delivery as the EPC (engineering, procurement and construction) general contractor. The owners are involved in day-to-day work, so the decisions a project needs can be made in hours instead of passing through several layers of management.
Building permit and technical design, licensed site managers, in-house installation crews, PV and electrical installations in industrial buildings, and coordination with other trades. Vice-President: Joanna Nita.
Kwartz Sp. z o.o. · Tax ID (NIP) 5252527330 · National Court Register (KRS) no. 0000411660
Kwartz Construction Sp. z o.o. · Tax ID (NIP) 7812081966 · KRS no. 0001147000
Faustyn Wiśniewski, CEO of Kwartz Group, on the people who combine advisory work and contracting at .KWARTZ.
Video in Polish with English subtitles.
Life without passion is merely existing. The people I work with every day are passionate about what we do, whether on the advisory side or on the delivery and contracting side. All of it revolves around renewable energy.
We care about it, we talk it through and look for the best solutions for our clients. That is our tenacity: we look for a solution for every situation.
We started with advisory work, PV project development, and renewable energy conferences and training.
Through the company Ekoenergetyka we added PV design and installation work to our advisory experience.
We changed our name to .KWARTZ.
We set up .KWARTZ Construction to bring design, site coordination and installation of PV and electrical systems into one team.
Member of DAFA, the Polish association of flat roof and façade contractors. DAFA DP 3.00 standard for flat roofs.
Roof load capacity, health and safety, documentation, insurer requirements and access for maintenance are checked before the investment decision.
We are a Polish advisory and engineering partner and EPC general contractor for energy projects in industry. We started in 2012 as Zielona Strona Mocy and have operated as .KWARTZ since 2020. We have delivered more than 50 MWp for the commercial and industrial (C&I) sector.
We represent the client’s interest, not that of a technology manufacturer or distributor. We check the economic case first and only then choose the technology and scope, matched to the data, risks and expected return, not to a single brand of PV modules or batteries, or to whatever we happen to have on offer.
We have operated since 2012 and delivered more than 50 MWp for the C&I sector. Our team has more than 30 people, we hold third-party liability insurance of PLN 10m and we are a member of DAFA. Selected installations and quotes from client reference letters are on our Projects page.
