Built for solar installers and electrical contractors doing 5+ projects per month — when your pipeline is full but your design queue is already backed up. We deliver grid-compliant PV designs in 48 hours, so your team closes faster and submits with confidence.
Most installers across DACH & BENELUX hit the same wall: more projects coming in than their engineering team can turn around. Three options — none of them good.
Expensive, slow to recruit, and over-capacity for the work you actually have.
Missed deadlines and engineers who don't know DACH grid standards or Netzbetreiber requirements.
Every week of delay is another project lost to a competitor who could move faster.
Three steps from specs to submission-ready files. No back-and-forth, no surprises.
Roof plan, system size, location, and grid operator. That's everything we need to start.
48-hour turnaround. We run yield simulation in PVSol and Helioscope, produce layout drawings in AutoCAD, validate string sizing and shading analysis, and review everything against your Netzbetreiber's TAB requirements. DIN VDE / EN compliant. Full deliverable, ready to submit.
Files are formatted for direct Netzbetreiber submission. No re-work by your team.
No upsells. No "additional scope" surprises. Every project ships with the complete package below.
Every deliverable is formatted for direct submission to your grid operator. No re-work required.
One service. Full deliverable every time. Price determined by system size.
| Tier | System Size | Price | Scope |
|---|---|---|---|
| Residential | Up to 30 kWp | € 220 | Rooftop residential. Freelance market rate: €400–800 for same scope. |
| Small Commercial Most Common | 30 – 100 kWp | € 450 | Commercial rooftop. Single or three-phase. Freelance market rate: €800–1,400. |
| Medium C&I | 100 – 300 kWp | € 900 | Industrial rooftop or small ground-mount. Freelance market rate: €1,500–2,500. |
| Large / Utility | 300 kWp+ | On Request | Large ground-mount. Scoped per complexity. |
All prices exclude VAT. Invoiced in EUR. Payment due within 14 days of delivery.
Commit to volume and get: lower per-project rate, named contact, dedicated capacity, guaranteed SLA.
€180/project · Named contact · No queue
€140/project · 24h urgent SLA · Priority slot
Retainer slots are limited. Available only after at least one completed per-project engagement.
If the design doesn't pass your grid operator's technical review on the first submission, we redesign it at zero additional cost. No questions asked.
We stand behind the work. If it doesn't work, neither do we — until it does.
Objection: "Outsourced work always needs corrections."
Every design ships with a full checklist: component sizing, string logic, shading analysis, and DACH/BENELUX compliance notes. Your installer picks it up and runs.
Objection: "We don't want to be locked in before we know the quality."
Your first project is a test. Pay per design. No retainer, no monthly fee, no volume obligation. If your first design doesn't pass Netzbetreiber review on the first submission, you pay nothing and keep the files.
Objection: "Can a Kosovo firm deliver compliant designs for our market?"
Designs are produced to DIN VDE / EN requirements and reviewed against your specific network operator's grid code. We deliver across Germany, Austria, Switzerland, Belgium, the Netherlands and Luxembourg — residential and small commercial. Share your Netzbetreiber or grid operator when you submit specs and we apply their exact TAB requirements.
Objection: "What formats do you deliver, and will they work with our submission workflow?"
Deliverables are provided as PDF reports, DXF/DWG layout files, and Excel-based BOQ and yield simulations — formatted to match Netzbetreiber submission requirements across DE, AT, CH, and BENELUX network operators.
I am Gembi Uka, founder and managing director of VOLTUKA. I am an electrical engineer specializing in power systems, with applied expertise in DACH and BENELUX standards — DIN VDE / EN compliance, Netzbetreiber technical connection conditions (TAB), and grid-code review across DE, AT, CH, BE, NL and LU network operators.
Every PV design we have delivered has passed first-time grid operator review across DE residential and small commercial projects. The discipline is the same on every brief: produce a complete, code-compliant deliverable that an installer can submit without re-work.
VOLTUKA is built on one principle: European solar installers deserve engineering support that is fast, compliant, and priced for the real world — not at consultant rates.
This is not artificial scarcity — it is how we protect the 48-hour turnaround guarantee for every active partner. Taking on unlimited clients would break the promise. We prefer not to do that.
Q: "What design software do you use?"
We work in PVSol and Helioscope for yield simulation and layout, with AutoCAD for technical drawings. All outputs are exported to formats compatible with your existing workflow.
Q: "What if we need a change after delivery?"
One round of revisions is included in every project at no extra cost, provided the scope hasn't changed. Redesigns required by grid operator feedback are always free under our compliance guarantee.
Q: "Can you handle our specific Netzbetreiber's requirements?"
Yes. Share your grid operator's name when you submit specs and we apply their specific technical connection conditions (TAB). We have worked with requirements across multiple German and Dutch network operators.
Q: "How does payment work?"
We invoice in EUR upon delivery. Payment is due within 14 days. We accept bank transfer (SEPA). No upfront payment is required for your first project.
Tell us about your project. We'll send your quote within 24 hours with a fixed price and timeline — no obligation.
Check your inbox shortly. If you don't hear from us, email gembi@voltuka.com directly.
Prefer email? Reach us directly at gembi@voltuka.com