OI Energy - Germany Solar Energy Expert
Our Vision
To deliver innovative, efficient renewable energy solutions that lead the industry toward a green, low-carbon tomorrow.
- (888) 4000-3434
Years of Journey
2020
2021
2022
2024
What sets us apart
At OI Energy, we possess in-depth expertise and hands-on experience in German solar industry regulations and standards, ensuring your solar projects fully comply with all legal and safety requirements.
Partnerships with LONGi, Trina, and JinkoSolar for cost efficiency. Helping clients obtain competitive prices is one of our primary objectives.
At OI Energy, we prioritize exceptional product quality above all else. To ensure this, we perform a higher percentage of thorough product inspections, setting us apart in our commitment to excellence.
OI Energy is dedicated to every client, no matter the project scale. We ensure this with full maintenance throughout your solar system's lifecycle.
Success Stories & Project Highlights
Hear what our satisfied customers have to say about their experience with OI Energy.
Small Bakery Rooftop Solar, Berlin, Germany
Location: Berlin, Germany
Customer Type: Small Business (Bakery)
System Details: Rooftop PV system with battery storage
Capacity: 25 kW
Type: Hybrid (Grid-connected with Battery Storage)
System Components:
LONGi high-efficiency solar modules
SMA three-phase inverter
Tesla Powerwall (15 kWh battery storage)
Energy Savings:
Reduces annual carbon emissions by 8 tons
Lowers electricity bills by approx. €4,800 annually
Customer Feedback:
“The solar system has significantly cut our electricity costs, and customers appreciate our eco-friendly commitment.”
Organic Farm Solar Installation
Location: Tuscany, Italy
Capacity: 25 kW
Type: Grid-connected
System Components:
Trina Solar monocrystalline solar panels
Huawei three-phase inverter
Huawei FusionSolar smart monitoring
Energy Savings:
Annual production of ~30,000 kWh
Reduces approx. 9 tons of CO₂ annually
Covers 60% of farm’s energy consumption
Client Feedback:
“The solar system has significantly cut our electricity costs and aligns perfectly with our organic farming values.”
Sustainable Furniture Workshop, Netherlands
Location: Utrecht, Netherlands
Capacity: 20 kW
Type: Grid-tied (optimized for daytime use)
System Components:
Trina Solar high-performance PV modules
SolarEdge three-phase inverter
Smart energy management (real-time monitoring)
Energy Savings:
Annual reduction of 6 tons of CO₂
Supplies 40-50% of annual energy consumption
Annual Production: 16,000+ kWh
Customer Feedback:
“Almost half of our production now runs on clean solar power, significantly reducing operational costs and appealing to environmentally conscious customers.”
Since installing the solar energy system in our home, the most significant change has been a dramatic reduction in electricity bills, averaging a 60% decrease. Specifically, we save approximately €1,000 annually, which is a significant amount for our household budget. The solar system has operated very stably, with no malfunctions since installation, and its power generation efficiency has fully met our expectations.
Certifications & Partnerships
Company Accreditation
OI Energy is a trusted solar company in Germany that holds several certifications and accreditations, including MCS, RECC, and ZEREZ. These certifications confirm that our company has expertise in renewable energy installation
Product Certifications
We collaborate with top manufacturers to supply high-quality components products have passed ISO(International Organization for Standardization), CQC(China Quality Certification), CE(European Commission), and other international certifications, and are exported to many countries and regions.
Strategic Partners
