Goodbye electricity bills.
Hello own electricity!
For you. For your family. For tomorrow.
Fast implementation – operational in 3 months.
Full cost control – your protection against rising prices.
Comprehensive service – from initial planning to maintenance.
Efficiency is good, trust is better. Partners & clients who trust us.
Comprehensive energy solutions – from a single source.
We develop, plan, and implement sustainable systems for electricity, heating, and mobility.
This is how we help you use energy efficiently, reduce costs, and become independent in the long term.
Reduce electricity costs
From electricity and heating to e-mobility
- Goal: Self-sufficient
Tailor-made self-sufficiency
Maximum payback
Maximum ROI with maximum yield and maximum consumption
With intelligent PV, storage, charging, and heating solutions, we make you independent of rising energy costs.
Regional provider since 2010
Guaranteed quality – maintenance, monitoring, and warranty handling included.
Direct contacts with experience from 600+ projects
Individual plans with flawless execution for optimal results.
Only high-quality components & our own employees
Sustainability requires quality.
References that speak for themselves.
Achieving your energy goals is our duty. Customer satisfaction is the extra mile.
Ehringshausen
System output
17.16 kWp
Modules
44x JA Solar JAM54S30-390/MR – 390 Wp (BFR)
Inverter
1x Fronius Symo GEN24 8.0 PLUS
1x Fronius Symo 7.0-3-M
1x HUAWEI SUN2000-5KTL-M1
Storage
1x BYD Battery-Box Premium HVS 7.7
Ockenheim
System output
13.48 kWp
Modules
35x Bauer BS-385-M6HBB-GG
Storage
1x E3/DC S10 E COMPACT home power plant AI 9.75
Ingelheim
System output
12.3 kWp
Modules
30x Hyundai HiE-S410VG – 410Wp (BFR)
Inverter
1x HUAWEI SUN2000-4KTL-M1
1x HUAWEI SUN2000-10KTL-M1
Storage
1x HUAWEI LUNA2000-10-S0
storage package 10kWh
Willingen
System output
18.7 kWp
Modules
44x Jinko Tiger Neo JKM425N-54HL4-V – 425Wp (BFR)
Inverter
1x GoodWe ET Plus Hybrid GW15K-ET
Storage
1x BYD Battery-Box Premium HVS 7.7
Wiesbaden
System output
12.3 kWp
Modules
30x Yingli YL410D-37e 1500V 1/2 – YLM-J 108 Cell (M10) (BFR)
Inverter
1x Sungrow – SH10.0RT
Storage
1x BYD Battery-Box Premium HVS 7.7
Koblenz
System output
9,6 kWp
Modules
24x Bauer BS-400-108M10HBB-GG
Inverter
1x GoodWe ET Plus Hybrid GW10KN-ET
Birken-Honigessen
System output
12,4 kWp
Modules
31x Bauer BS-400-108M10HBB-GG
Inverter
1x GoodWe ET Plus Hybrid GW10K-ET
Storage
1x BYD Battery-Box Premium HVS 10.2
Delkenheim
System output
9,66 kWp
Modules
23x Bauer BS-420-108M10HBB-GG (GG)
Inverter
1x GoodWe ET Plus Hybrid GW10K-ET
Storage
1x BYD Battery-Box Premium HVS 7.7
Siegburg
System output
9,2 kWp
Modules
23x Bauer BS-400-M10HBB (FB)
Inverter
1x Fronius Symo GEN24 8.0 Plus
Stockstadt
System output
12.64 kWp
Modules
32x Trina Vertex S TSM-395DE09.08 – 395 Wp (BFR)
Inverter
1x HUAWEI SUN2000-10KTL-M1
Storage
1x Huawei Luna2000-10-S0
Benitez
System output
16.99 kWp
Modules
43x Trina Vertex S TSM-395DE09.08 – 395 Wp (BFR)
Inverter
1x HUAWEI SUN2000-10KTL-M1
1x HUAWEI SUN2000-4KTL-M1
Storage
1x Huawei Luna2000-10-S0
Biering
System output
12.64 kWp
Modules
43x Trina Vertex S TSM-395DE09.08 – 395 Wp (BFR)
Inverter
1x HUAWEI SUN2000-10KTL-M1
Storage
1x Huawei Luna2000-10-S0
Pfungstadt
System output
22.91 kWp
Modules
58x Trina Vertex S TSM-395DE09.08 – 395 Wp (BFR)
Inverter
1x HUAWEI SUN2000-10KTL-M1
1x HUAWEI SUN2000-8KTL-M1
Storage
1x Huawei Luna2000-10-S0
Kelkheim
System output
13.83 kWp
Modules
35x Trina Vertex S TSM-395DE09.08 – 395 Wp (BFR)
Inverter
1x HUAWEI SUN2000-10KTL-M1
Storage
1x Huawei Luna2000-5-S0
Usingen
System output
18.17 kWp
Modules
43x JA Solar JAM54S30-410/MR light – 410 Wp (BFR)
Inverter
1x HUAWEI SUN2000-8KTL-M1
1x HUAWEI SUN2000-5KTL-M1
Storage
1x Huawei Luna2000-5-S0
Königswinter
System output
9,84 kWp
Modules
24x Hyundai HiE-S410DG – 410Wp (FB)
Inverter
1x GoodWe ET Plus Hybrid GW10K-ET
Königswinter
System output
11,2 kWp
Modules
28x Bauer BS-400-M10HBB (FB)
Inverter
1x Fronius Symo GEN24 10.0 Plus
Storage
1x BYD Battery-Box Premium HVS 10.2
We make energy simple.
Our services make you independent of rising energy prices and bring sustainable technology directly into your home. From the initial consultation to long-term support, we ensure that you live efficiently, comfortably, and with a future-proof energy system.
Individual consultation
No project is like another. That’s why you get recommendations from us that are truly tailored to you.
We take the time for your questions – honest, clear, and tailored to your situation.
Store your self-generated electricity and use it exactly when you need it. Our battery storage systems make you more independent, increase your self-consumption, and ensure stable energy – day and night.
Battery storage
Charge your electric car safely, quickly and conveniently at home. Our smart wallboxes are a perfect fit for your PV system and ensure that you remain mobile in a cost-effective and sustainable way.
Wallboxes
Heat pumps
Heat efficiently, climate-friendly and future-proof. Our heat pumps use energy from your surroundings and permanently reduce your heating costs – ideal in combination with photovoltaics. Wallboxes
Full Service & Maintenance
We take care of everything so that your system runs reliably. With our full-service and maintenance package, you are fully covered – from regular inspections to fast support when needed.
Photovoltaic systems
Become independent and produce your own solar power directly on your roof.
Our PV systems are efficient, durable, and precisely planned for maximum
Energy yield and real cost savings
Installation & commissioning
The art lies in planning individually, bringing experience to the selection of the right hardware, and executing everything simply and flawlessl
Fast, clean, and professional:
Our teams are not only certified – all installations are carried out exclusively by our own employees, who professionally install and fully commission your system. You sit back – we take care of the rest.
Subsidy & Financing Consultation
We show you which subsidies you can use and how to finance your project optimally. Transparent, easy to understand, and – so that your personal
the energy solution is also the best financial choice.
SunWinWin
Solar for Everyone!
SunWinWin – your regional partner for future-proof energy solutions. As part of Baustark GmbH, we stand for quality, reliability, and transparency. We are a family-owned company from the region with a clear mission: to make the possibilities of renewable energy accessible to you.
With proven technology, experience, and personal support, we develop solutions that impress today and endure tomorrow. Our mission: Make sustainable energy accessible and easy to use for everyone.
The SunWinWin 3-Point Plan
Our mission: to make energy understandable, fair, and accessible.
We want renewable energy to stop being a complicated topic of the future and become a real benefit for people today.
We support you with clear words, honest assessments, and solutions that truly fit your everyday life.
Not more technology than necessary – but exactly as much as will benefit you most in the long run.
Our vision: A life that provides itself with energy.
We dream of a world where households and businesses no longer have to source their energy externally, but instead generate, store, and use it intelligently themselves.
A future where freedom means having control over your own energy costs and supply.
And in which sustainable energy is not extraordinary but commonplace.
Our strength: honesty, experience, and efficiency.
We focus on solutions that have proven themselves – combined with expertise and practical experience.
Our goal: To achieve the maximum efficiency, reliability and economic benefit for you with the least possible effort.
No empty promises, no oversized systems – just technology that makes sense, is well-planned, and saves you money every day.
Rising electricity prices? Not with us!
With our sustainable energy solutions, you can reduce your costs sustainably and become independent from increasingly expensive electricity providers. Sounds good? It is! Let’s discuss your project without obligation.
The best from the sun: electricity and heat
Our PVT systems combine photovoltaics and solar thermal for maximum efficiency. Generate electricity and heat simultaneously – sustainably, space-saving, and future-proof.
More energy for your budget
Thanks to subsidies and smart technology, you get the most out of your investment. We help you use sustainable solutions and even save money in the process.
Worry-free implementation – from A to Z
From the first consultation to the completed installation – we handle every step. Rely on a team that guarantees quality, precision, and reliability.
3 top coordinated system packages
Each in 3 component sizes – tailored to your needs.
You can choose between 2 plant tower set brands or a system with free selection of components.
SunWinWin SELECT - System Components
Tower systems are complete systems from a single manufacturer
And the advantage? – good value for money – good design – a well-coordinated system
Are there any disadvantages? – only a customized solution is optimally tailored and maximally efficient!
Need help deciding?
Tower Set 1 – LUMENHAUS
4 modules to choose from – all top class – all full black in 2 price categories. Choose between entry-level: TrinaSolar & JaSolar and premium brands Aiko & Longi.
Tower Set 2 – ECOFLOW
The right substructure for every roof. When top quality meets safety and design standards, Novotegra comes into play. For just a little more, you get many times more.
Self-Combined Modular Set
We offer 2 solar system packages
Lower electricity bill
- Let the sun in!
You invest a lot in your home, so don’t wait for the next high bill:
Act now, lower your electricity costs, and create more long-term financial freedom for yourselves.
How your energy transition begins – a short story with SunWinWin
Imagine you are sitting at home on a completely normal evening.
Electricity prices are rising again, and you wonder if there isn’t finally an easy way to become independent.
This is exactly where our shared story begins.
The first conversation: We sit down together. – 01
Maybe you call us, maybe you just send a message.
In any case, we take time for you.
We listen, understand how you live, how much energy you need, and what matters to you.
No pressure, no technical jargon – just an honest conversation between people.
02 - The idea takes shape.
From your wishes and our experience, a clear picture gradually emerges:
How much sunlight your roof captures.
How your self-produced electricity should be used.
Which technology is worthwhile for you and which is not.
We are developing a concept that feels like a tailor-made suit:
Fits, feels right, works.
The day when plans become reality. – 03
A few weeks later, our installers are at your door.
Friendly, punctual, motivated. They know exactly what to do and work accordingly.
so that you can continue your everyday life as normal.
You might briefly glance at your roof or basement and see,
how your new energy future is taking shape.
04 - The big switch-on.
And then the moment arrives.
We press "Start" together.
The system is starting up.
The first rays of sunshine of the day begin to generate electricity for you.
We'll go through everything with you in a clear and understandable way, step by step.
You notice immediately: This is not just technology.
That is freedom.
We stay by your side. – 05
And then comes the moment:
We press start together.”
The system is starting up.
The first rays of sunshine of the day begin to generate electricity for you.
We'll go through everything with you in a clear and understandable way, step by step.
You notice immediately: This is not just technology.
That is freedom.
And so begins an energy story
that is written every day.
Without us you overpay, with us you save smartly.
Rising electricity prices or sustainable independence?
We give you an overview of the benefits you really have with us.
Without SunWinWin
1. No fixed contacts
Other providers often work with external teams or changing subcontractors.
The result: no one feels truly responsible,
constantly new faces
, no personal support
, problems are simply passed on.
2. Long waiting times due to supra-regional structures
Large or nationwide companies are often heavily burdened and inflexible.
This results in:
delayed feedback, delayed installation, and long response times in case of service issues.
3. No in-house technicians - everything is outsourced.
Many providers do not employ their own technical staff, but outsource to subcontractors.
This can lead to:
Quality differences,
lack of control,
shifting of responsibility,
additional costs for rework.
Hardly any way to reach them when problems arise.
With nationwide or anonymous companies, you often end up:
in hotlines,
in ticketing systems,
at service centers abroad.
5. Risk of incomplete planning
If planning is not done regionally, important details are overlooked: fire safety, distance regulations.
Lightning protection and safety rules
regional funding
Network operator specifications
Mistakes in these areas can become very costly later on.
6. Cheap components - short lifespan
Many suppliers lure customers with low prices and install:
cheap inverters,
no-name storage systems,
and non-certified substructures.
The result: shorter lifespan, higher failure rates.
7. Lack of transparency
Many providers do not employ their own technical staff, but outsource to subcontractors.
This can lead to:
Quality differences,
lack of control,
shifting of responsibility,
additional costs for rework.
8. Regional characteristics are ignored.
Nationwide providers are rarely familiar with:
local network operators,
approval procedures,
regional building regulations.
This often leads to delays or incorrect planning.
9. No long-term support
Some providers practically disappear from the market after installation, leaving customers to deal with software errors, warranty claims, and expansion requests on their own.
10. Poor service in warranty cases
With external companies, the process often takes months because:
subcontractors are involved,
manufacturers are not contacted directly,
and no one feels responsible.
With SunWinWin
At SunWinWin you always have the same contact person - from the initial consultation to commissioning.
SunWinWin is regional and therefore available to you quickly and directly.
SunWinWin works exclusively with its own qualified staff.
SunWinWin offers direct, personal communication, not a call center.
SunWinWin knows all the requirements and plans completely.
SunWinWin uses high-quality, durable technology from leading brands, backed by a guaranteed warranty.
At SunWinWin you get clear prices, clear processes and clear responsibilities.
SunWinWin is based in the region and knows all the processes.
SunWinWin will remain your direct contact person for years to come.
SunWinWin handles warranties directly and quickly.
In short:
If you don't work with SunWinWin , you risk:
delays,
quality problems,
lack of accessibility,
expensive rework,
unclear responsibilities,
shorter lifespan of your system,
lack of service readiness.
With SunWinWin you get:
Regional support,
in-house specialists,
honest advice,
craftsmanship,
fast response,
high-quality components,
full responsibility from a single source
This is what satisfied customers say about our collaboration.
Contact us quickly and without obligation.
Do you have a request, questions, or would you like to request a quote for your project? Then simply give us a call or send us a message via our contact form.
Email:
Telephone number:
Location:
Let's talk about your energy future.
Whether you have initial questions or concrete plans – we are here for you personally. Simply fill out our form or give us a call – we will get back to you as soon as possible.
Do you have questions? We have the answers!
01 ― Is now the right time to install your own photovoltaic system?
A few years ago, feed-in tariffs for solar power plants were significantly higher, but at the same time photovoltaic systems were expensive and technically less efficient.
Today, the picture has fundamentally changed: Modern photovoltaic systems are significantly cheaper ,, more powerful and more economically attractive than ever before. At the same time, electricity prices are rising continuously, increasing the demand for Independence from energy suppliers is getting bigger and bigger.
Having your own photovoltaic system makes it possible to produce your own electricity, reduce costs in the long term and at the same time make an active contribution to environmental protection.
In short: Yes - Now is a very good time, to invest in a photovoltaic system.
02 ― When does a photovoltaic system make financial sense?
A photovoltaic system is considered financially worthwhile if it recoups its purchase costs within less than 20 years. The decisive factor here is primarily the price per installed Kilowatt-Peak (kWp).
Furthermore, several factors play an important role: the orientation and location of the system, individual electricity consumption, and personal usage patterns. A photovoltaic system is particularly economical if a suitable, sunny roof with a south, west, or east orientation is available and there is a high demand for self-generated electricity – for example, from the household, an electric car, or a heat pump.
Under these conditions, a large portion of the generated electricity can be used on-site, significantly improving the system's profitability. At SunWinWin, we have planned and implemented more than 600 systems. We plan and advise you quickly and precisely.
03 ― What exactly does “More performance. More yield.” mean at SunWinWin?
At SunWinWin, we don't plan systems to the bare minimum, but rather with a deliberate increase in performance and yield. Our calculations are designed to make optimal use of the available roof space and achieve higher returns in the long term.
Our customers benefit economically from this – that is the core of our win-win philosophy.
04 — Does SunWinWin also handle planning, assembly and grid connection?
Yes. SunWinWin plans and implements photovoltaic systems entirely with its own employees. From individual design and professional installation to registration and acceptance by the energy supplier, we support our customers step by step.
We strive to complete all projects within a short timeframe – there is never more than a 2-week gap between DC (roofing work) and AC (electrical work) – these usually start on the same day, with the AC installation taking a maximum of one day longer – the DC installation is usually completed on the second day.
Should we fail to keep this promise, you will receive an immediate discount of €500 – no ifs, ands, or buts!
05 ― When does a battery storage system make sense for my photovoltaic system?
A battery storage system makes sense if the household regularly uses it. A battery storage system makes sense if the household regularly uses it. Solar energy is generated that cannot be used immediately. Since solar energy is generated during the day, but most energy is also used at night and in the early morning hours, it is a crucial advantage to be able to store this energy. The more self-generated electricity is consumed, the faster the investment in a storage system pays for itself.
If less electricity is purchased, this increases the Economic efficiency of the photovoltaic system. At the same time it increases Security of supply, because stored energy is also available in adverse weather conditions.
06 ― Does the VAT exemption apply to photovoltaic systems?
Yes. Photovoltaic systems commissioned from January 1, 2023 onwards are subject to a 0% VAT rate.
This means that no VAT is charged on the delivery and installation of the PV system, making the investment significantly more attractive.
An exception is this Walbox represent. Since they not an integral part of the photovoltaic system If it is, it remains subject to the regular VAT rate.
07 ― How long does a photovoltaic system last – and when does it pay for itself?
Photovoltaic systems are designed for a very long lifespan. Modern solar modules typically produce electricity reliably for 25 years or more. Inverters and energy storage systems are also technically advanced and designed for many years of operation.
In practice, this means:
A photovoltaic system typically pays for itself after about 8 years, depending on system size, self-consumption, and electricity price trends. After that, it produces virtually free electricity for many more years.
At SunWinWin, we are specifically focused on keeping this amortization period as short as possible.
Our systems are designed so that our customers receive more solar power for the same price – meaning more power and more yield from the start.
For our customers, this means: earlier amortization, earlier profit and overall higher profitability over the entire lifespan of the plant.
More power. More yield. More sun for everyone!
08 ― Does a photovoltaic system require regular maintenance?
No. A photovoltaic system installed by SunWinWin generally does not require regular maintenance.
A maintenance is no requirement and presents no exclusion in the warranty conditions of our German manufacturers represents.
Photovoltaic systems are technically designed to operate reliably and with virtually no maintenance for many years.
Should you still wish to have a review or simply want to be sure, We'd be happy to take a look at your system or your roof..
Just get in touch – we're here for you.
09 — When can my photovoltaic system be put into operation?
The official commissioning date depends on the Procedures of your respective network operator from and can – depending on the region – take several weeks.
Good to know:
Once we have completed the electrical work, you can generate your own solar power and use it in your household.Only the Feed-in to the public electricity grid This will only happen after formal approval by the network operator.
Until then, you'll have to wait a little longer, but your self-generated electricity is already working for you.
10 — Does a photovoltaic system produce enough electricity even when the sky is cloudy?
Yes - modern solar modules of the latest generation are specifically designed to withstand even the diffuse light They operate particularly efficiently. Compared to older modules, they can even function in cloudy conditions. noticeably higher yields delivery.
Typical performance values of modern modules:
- Clear sky with direct sunlight: approx. 100% performance
- Partly cloudy / bright diffused light: approx. 70–85% performance
- Heavily clouded, but bright: approx. 30–50% Performance
- Dark rain clouds: approx. 10–20% performance
The reason: New module technologies are being used. Diffuse radiation is significantly better and are less sensitive to suboptimal lighting conditions.
This is exactly where SunWinWin comes in.
We deliberately plan our facilities with powerful modules, which also generate more energy in diffuse light. This creates a [missing information] over the course of the year. noticeable increase in yield – not only on perfect sunny days, but also in everyday life.
More power. More yield. More sun for everyone!
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