GUIDE PRICES & PLANNING
Clear prices.
The right energy solutions.
Realistic cost guidance for photovoltaics, air conditioning, Wallboxes and heat pumps. Transparently calculated and individually planned for your project.
- Photovoltaicsfrom €7,500
- Air conditioningfrom €2,800
- Wallboxfrom €1,950
ErEne Green Technologies
Transparent guide prices for your energy transition
Whether photovoltaics, storage, air conditioning, a Wallbox or a heat pump: this page gives you reliable initial cost guidance. As a specialist contractor and PV wholesaler based in Mettmann, we design energy solutions for homes and businesses throughout Düsseldorf, Ratingen, Wuppertal and beyond.
Homeowners
Photovoltaic systems
Turnkey guide prices for private rooftop systems. Where the statutory requirements are met, the figures include 0% VAT.
| System size | Typical roof area | Guide price per kWp | Without battery | With battery |
|---|---|---|---|---|
| 5 kWp | approx. 25 m² | €1,500-€1,800 | €7,500-€9,000 | €12,000-€14,500 |
| 10 kWp | approx. 50 m² | €1,250-€1,500 | €12,500-€15,000 | €17,500-€21,000 |
| 15 kWp | approx. 75 m² | €1,100-€1,300 | €16,500-€19,500 | €22,500-€26,500 |
| 20 kWp | from approx. 85 m² | €1,000-€1,200 | €20,000-€24,000 | €26,000-€31,000 |
Battery packages are sized to suit consumption, generation and the desired level of energy independence.
Cooling & heating
Split air-conditioning systems
Guide prices include standard installation and 19% VAT. Cable routes and special structural work may change the project scope.
| System | Output range | Suitable for | Turnkey from |
|---|---|---|---|
| Single-split | 2.5-3.5 kW | 1 room | €2,800 |
| Dual-split | 4.0-5.2 kW | 2 rooms | €4,900 |
| Triple-split | 5.2-6.8 kW | 3 rooms | €6,800 |
| Quad-split | 6.8-8.0 kW | 4 rooms | €8,500 |
Final sizing depends on room dimensions, insulation standard, use and the level of comfort required.
Charging infrastructure
Wallbox packages
Guidance including hardware, standard installation and 19% VAT. For businesses and multi-bay installations, we prepare an individual load-management concept.
| Charging points | Typical application | Package price from |
|---|---|---|
| 1 Wallbox | Home or single parking space | €1,950 |
| 2 Wallboxes | Double garage or small team | €3,600 |
| 3-5 charging points | Apartment building or small fleet | €6,400 |
| 6-10 charging points | Commercial fleet | €13,500 |
Grid connection, cable lengths, wall penetrations and dynamic load management are assessed in advance.
Heating
Air-to-water heat pumps
Guide prices for coordinated system packages. Funding depends on the building, measure, application and the programme conditions in force at the time.
| Project | Output | Price before funding | Potential price after funding |
|---|---|---|---|
| New-build detached house | 5-8 kW | €29,500 gross | approx. €20,650 at 30% |
| Existing detached house | 10-14 kW | from €36,000 gross | from approx. €13,600 with maximum funding |
| Small business | 20-45 kW | €44,000 net plus VAT | individual commercial funding assessment |
The examples shown do not constitute a funding commitment. We assess technical suitability and discuss the current framework with you.
TURNKEY COMPLETE SOLUTION
What is included in the price?
- System sizing and technical project planning
- Coordinated branded components and mounting system
- Professional installation and electrical integration
- Registration, commissioning and user briefing within the agreed scope
FREQUENTLY ASKED QUESTIONS
Useful information before we start planning
How are the prices calculated?
The main factors are system output, components, installation effort, electrical infrastructure and structural conditions. The tables therefore provide realistic guidance, while a binding proposal is prepared only after the project assessment.
Which public funding programmes may apply?
This depends on the technology, building, applicant and current funding programme. Grants or financing programmes may be relevant, particularly for heat pumps and commercial energy infrastructure. An individual assessment is always required.
Why do online package prices often differ?
Many comparison prices do not include the condition of the meter cabinet, cable routes, scaffolding, grid requirements or integrated system planning. We calculate the work needed for a professional solution that remains useful over the long term.