116 Header Low 1331795324

Renewable
energy

Your HVAC experts for heating, plumbing & air conditioning in Berlin
117 Content Square Vitocal 250 A Vitocharge Vitovolt Wallbox

Green wave for Berlin — heating with renewable energy!

Do you not only want to heat cost-effectively, but also do something good for the environment at the same time? Good decision! With our modern heating solutions based on renewable energy, you are focusing on sustainability and efficiency. Together, we are shaping Berlin's energy revolution.

  • Photovoltaic systems
  • Heat pumps & hybrid systems
  • Local energy advice
  • Sustainable solutions
  • Independence from fossil fuels
  • Diverse funding opportunities
  • CO2 reduction
Get your personal advice
93 Teaser Quer 857079154

heating
modernizATION

Do you want to modernize your heating system and save costs? We provide you with expert advice on all issues related to heating replacement. You will receive your non-binding initial offer in 2 minutes via our heating calculator.

94 Teaser Quer Wartung 6

professional
Heating check

With our heating check, we show you valuable savings potential. At the same time, you will meet all legal requirements for testing your gas heating system. Find out more about our attractive packages now.

89 Teaser Quer Techniker Auto 4 Neu Retusche

heating
maintenance

Heating systems are complex and in use for thousands of hours a year. With a regular check, you can rest assured that everything is working optimally and reliably.

Sprechblasen Blue Circle icon

Personal
guidance

We listen and only recommend what fits

Pflanze Blue Circle icon

Focus on sustainability

Use resources wisely for people and the environment

Money Blue Circle icon

Government subsidy advisory

We'll tell you what's possible so you don't waste money

Hgz Kv 08 155161383 Crop 8 Bit Srgb
Hgz Kv 08 155161383 Crop Cut Out 8 Bit Srgb
Sustainability, rethought

When and where
does the future
actually begin?

The world we will live in tomorrow is created in the minds of those who understand that they can help shape it today. Do you see it that way too? Then let's do it together.

Latest news on the HGZ blog

Your Day as an HVAC Fitter

Join Thierry for a day as HVAC Project Technician at HGZ

Your Day as an HVAC Senior Fitter

Join Szymon for a day as HVAC Project Lead at HGZ

118 Content Hero Vitocal 25X A

Your path to independent energy generation!

Global thinking requires local action: With decentralized energy generation, you are making a valuable contribution to sustainable climate protection. Photovoltaics are a clear key factor in this. Because it enables you to produce your own electricity independently and sustainably — and with a clear conscience.

  • Independence from public power grids
  • Photovoltaics for sustainable power generation
  • Battery storage for energy autonomy
  • Optimum combination with heat pump
  • Safe emergency care in the event of a power failure
  • Selling excess energy at a profit
  • Your contribution to climate protection and energy transition

Photovoltaics and battery storage: the future-proof combination

Shutdown of nuclear power plants. Coal phase-out. Political uncertainties in gas imports. Energy supply must be rethought. With your own photovoltaic system, you produce your own electricity in an environmentally friendly way, which you can also efficiently store and use whenever you need it with a suitably sized battery storage system. If you also integrate a heat pump, you can use the self-generated electricity even even more efficiently - for example for your heating or water heating. In this way, you can not only reduce your energy costs, but also actively contribute to climate protection.

119 Content Vitocal 250 Sh Innen Ausseneinheiten Frontale

Energy-independent and environmentally friendly: your best decision!

Your own photovoltaic system is much more than just an investment in your self-sufficient energy supply. It is an active statement for climate protection and a sustainable future. By combining photovoltaics and battery storage, you maximize your personal contribution to the energy revolution. Not only do you produce green electricity for your own needs, but you can even feed excess energy into the grid and thus benefit even more. In the event of a network failure, you will be still supplied with power via an emergency line.

120 Content Vitovolt 300 Mxxx Sc
Get your expert advice

We are happy to be there for you personally

Julian
Steinberg

As a project planner and building energy consultant at HGZ, I handle all matters relating to renewable energies. You can easily reach us via the direct contact form or by phone at 030 5497939-11.

99 Teaser Quer Vitocal 250 A

Heating with a heat pump

Would you like to heat your house sustainably and cost-effectively with renewable energy? Then take advantage of the heat pump: efficient, environmentally friendly and future-proof! Switch now, save costs in the long term and make an important contribution to climate protection!

100 Teaser Quer Vitovolt 300 00009

Intelligent
photovoltaics

Looking for clean energy from your own roof? Benefit from the infinite power of the sun for your home! With modern photovoltaics, you not only generate environmentally friendly electricity from it, but you also reduce your energy costs and actively contribute to climate protection.

102 Teaser Quer Vitovalor Pa2 00011

Fuel cell heater

More and more of our customers are enthusiastic about the topic of fuel cell heating systems — the innovative way of heating! High efficiency, low emissions and cutting-edge technology. Find out here how you can benefit from it for your home.

Thanks HGZ! It feels great to be completely independent of oil and gas.

Our brand partners for renewable energy
in Berlin

When it comes to renewable energy in Berlin, we rely exclusively on the best manufacturers on the market. Many of them, by the way, are family businesses made in Germany... just like us.

Vaillant

As a leading provider of heating, ventilation and air-conditioning technology, the German family-owned company stands for innovative and energy-efficient system solutions. With all products, Vaillant places great value on comfort, usability and sustainability in order to create a greener future.

Viessmann

Viessmann is one of the leading manufacturers of heating and cooling systems. With the aim of making living spaces sustainable for the future, the family-owned company focuses on innovative solutions and the highest quality standards and is thus actively driving the energy revolution forward.

Bosch

Bosch Thermotechnology stands for high-quality heating products and hot water solutions. With pioneering technology and a clear focus on sustainability, innovation and convenience, the company makes a significant contribution to environmentally friendly heating and water supply.

Buderus

Buderus (Bosch Group) for absolute quality and reliability in the area of heating and heating technology. With a wide range of products from efficient heating systems to intelligent control solutions, the company is clearly focused on sustainability, innovation and customer proximity.

Got Any more questions?
We've got all the answers.

Here you can find frequently asked questions and answers on the topic of renewable energy in Berlin.

Solar thermal systems use sunlight to generate heat, which is primarily used for hot water and space heating. Photovoltaic systems, on the other hand, convert sunlight directly into electricity. Both systems can be combined to maximise energy efficiency.

Heat pumps are significantly more efficient than conventional heating systems. They can generate three to five times more energy than they consume. This makes them a cost-effective and environmentally friendly alternative.

The lifespan varies by system type. Photovoltaic systems typically last 25 to 30 years, solar thermal systems around 20 to 25 years, and heat pumps around 15 to 20 years. Regular maintenance can extend the service life.

On days with little sun or wind, energy storage systems such as batteries can bridge the gap. Alternatively, you can draw on the public electricity grid. A well-designed system takes such scenarios into account to ensure reliable energy supply.

Renewable energy systems can increase the value of your property, as they reduce energy costs and make the property more attractive to potential buyers. An energy-efficient home is increasingly in demand in today's market.

Yes, renewable energies can also be installed in older buildings, although additional adjustments may sometimes be necessary. A thorough on-site assessment helps to identify the best solutions for your specific building.

There are various government subsidies available for the installation of renewable energy systems, including grants and low-interest loans from the KfW development bank and the BAFA (Federal Office for Economic Affairs and Export Control). We can provide advice on the available options and help you apply.

Complete independence from the electricity grid is theoretically possible with a sufficient combination of renewable energy sources and storage systems. However, this requires careful planning and a significant investment. For most households, a hybrid solution – combining self-generated energy with grid connection – is the most practical option.

The payback period for a photovoltaic system depends on various factors, including system size, location, energy consumption, and available subsidies. On average, payback takes between eight and twelve years.

Depending on your home's location and structural conditions, a variety of systems may be suitable, including photovoltaic systems, solar thermal systems, heat pumps, or even small wind turbines. We offer a comprehensive consultation to find the best solution for your needs.

Renewable energies offer numerous benefits: they reduce your energy costs, make you less dependent on fossil fuels and rising energy prices, and contribute to environmental protection. In addition, they can increase the value of your property and may entitle you to government subsidies.

"Renewable energies" refers to energy sources that are naturally replenished, such as solar energy, wind energy, hydropower, geothermal energy, and biomass. In contrast to fossil fuels, they produce little to no greenhouse gas emissions and contribute to reducing climate change.