Business Innovator - Xpert.Digital - Konrad Wolfenstein

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⭐️ Renewable energies

: Renewable energies: Solar & photovoltaics – consulting and planning – Image: Xpert.Digital

As an industry expert in the fields of mechanical engineering, logistics and photovoltaics, I write here in my Xpert Blog about topics including the solar obligation , solar carports , photovoltaic substructures/mounting systems and solar modules .

The best way to reach me is via email at [email protected] or by phone at +49 89 89 674 804.

Depending on the technology used, electricity from renewable energy sources can be produced significantly more cheaply than electricity generated in conventional power plants. This is shown in a study by the Fraunhofer Institute for Solar Energy Systems ISE. According to the study, electricity from gas turbines and coal-fired power plants is the most expensive to produce.

Photovoltaic systems convert solar radiation into electrical energy using solar cells. In a global comparison, Germany, along with China, the USA, and Japan, was recently among the leading countries in the use of photovoltaics for electricity generation.

In Germany, the installed capacity of photovoltaic systems has increased continuously. In 2020, photovoltaic systems with a capacity of approximately 54 gigawatts were installed in Germany. The electricity generated by these systems amounted to roughly 51 terawatt-hours in the same year. The largest solar power generation capacities are located in southern Germany. Bavaria currently has by far the largest capacity of any German state, followed by Baden-Württemberg.

▶️ The billion-dollar blind flight: How missing data in the power grid determines the success or failure of energy projects
The historic low prices on the solar market are finally a thing of the past. A triple shock awaits homeowners in 2026, changing all previous calculations. | China is ending its export subsidies, which is significantly increasing the price of solar modules. | | At the same time, the German government is planning to abolish the important feed-in tariff for small-scale systems. | | A new Middle East conflict is causing gas prices to escalate and increasing the pressure on energy costs. | This perfect storm is hitting everyone planning a photovoltaic system with full force. | | The consequence is that solar systems will become drastically more expensive again immediately. | Waiting until next year could prove to be a costly mistake. | Find out now why you should no longer hesitate to decide on a solar system. | Act today to secure current conditions and avoid future price increases. | [...]

▶️ Learn more here

▶️ PV bankruptcies: AgriPV GmbH, UrbanPV GmbH and the domino insolvency with GridParity
The solar industry is reeling from a new wave of PV bankruptcies, raising many questions. | The focus is on the insolvencies of GridParity AG and its subsidiaries UrbanPV GmbH and AgriPV GmbH. | | The official reasons given are economic policy and a lack of EU approvals. | We investigate whether politics alone is to blame for this solar collapse. | However, internal insights and disastrous valuations paint a completely different picture of reality. | | Chaotic management structures and a leadership resistant to advice point to self-inflicted problems. | A risky expansion strategy amidst a foreseeable market crisis appears to be the true reason for the downfall. | | Discover the background of this domino-like insolvency that is shaking the industry. [...]

▶️ Read more here
▶️ How Ursula von der Leyen and the EU Commission first silently approved the nuclear phase-out and now condemn it as a fatal mistake
Experience Ursula von der Leyen's spectacular U-turn on nuclear policy. The EU Commission once tacitly approved the nuclear phase-out. | Now, the rejection of nuclear power is being described as a fatal mistake. | We analyze this historic lesson in political hypocrisy. | The U-turn has led to massive regulatory uncertainty. | This amounts to industrial self-sabotage. | Now, a sudden nuclear renaissance is being proclaimed. | Millions in subsidies are flowing into research for new reactors. | Is this a necessary course correction for Europe's energy goals? | Or is the green dream failing in the face of harsh reality? | [...]

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▶️ Germany's missed solar revolution – yet again: Why 16 million roofs can do more than Europe's nuclear dreams
| Germany is once again missing a huge opportunity in solar energy and hindering the world's largest decentralized power plant. | A vast, untapped potential for clean electricity lies dormant on 16 million German rooftops. | | But instead of seizing this opportunity, politicians in Berlin are paralyzing expansion. | | At the same time, the EU Commission is steering in the wrong direction with a belated nuclear renaissance. | Over €240 billion are to be invested in outdated nuclear dreams by 2050. | This sum stands in stark contrast to the significantly lower costs of developing Germany's solar potential. | This repeats Germany's reluctance to consistently promote innovative future technologies. | The missed solar revolution joins a series of strategic errors, such as those with the Transrapid maglev train or the subsidies for electric cars. | Germany's single-family and two-family homes could make a huge contribution to the energy transition. | | Discover why our roofs are worth more than Europe's expensive nuclear plans and how Germany is jeopardizing its energy future. [...]

▶️ Learn more here
▶️ Historically low prices on the solar market are a thing of the past: This is why solar systems will become drastically more expensive again from now on
The historic low prices on the solar market are finally a thing of the past. A triple shock awaits homeowners in 2026, changing all previous calculations. | China is ending its export subsidies, which is significantly increasing the price of solar modules. | | At the same time, the German government is planning to abolish the important feed-in tariff for small-scale systems. | | A new Middle East conflict is causing gas prices to escalate and increasing the pressure on energy costs. | This perfect storm is hitting everyone planning a photovoltaic system with full force. | | The consequence is that solar systems will become drastically more expensive again immediately. | Waiting until next year could prove to be a costly mistake. | Find out now why you should no longer hesitate to decide on a solar system. | Act today to secure current conditions and avoid future price increases. | [...]

▶️ Learn more here

▶️ The factory that pays for itself – Why energy efficiency is no longer a cost-saving program, but a survival strategy
High energy prices threaten German industry and its competitiveness. Government subsidies like the industrial electricity price are merely a temporary fix, not a long-term solution. | From 2026, strict EU regulations will force companies to take further action. | | Energy efficiency is therefore no longer a cost-cutting measure, but a vital strategy for survival. | With intelligent energy concepts based on the "efficiency-first" principle, you secure crucial competitive advantages. | Eliminate cost traps like inefficient compressed air and optimize your processes. | Utilize innovative technologies like high-temperature heat pumps to reduce costs. | Intelligent energy management transforms your factory into a self-sustaining system. | Learn why subsidies are a self-deception and what factories really need now. | Secure Germany's industrial future with us through genuine efficiency gains. | | [...]

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▶️ The myth of cheap electricity: Engineers plan, controllers warn: Will the energy transition break down due to costs?
Germany's energy transition is facing a massive test and is proving to be an expensive illusion. The fairytale of cheap green electricity is bursting in the face of exploding costs of up to €5.4 trillion. | While engineers plan, controllers and business economists are sounding the alarm about the gigantic financial risks. | The energy transition has become not a physical problem, but a business problem. | Competitiveness is at stake, and deindustrialization threatens the German economy. | Companies are already switching to "standby" mode. | The five-trillion-euro question is how this project can still be financed. | A shift from technical idealism to a viable business model is needed. | Find out why the energy transition is in danger of failing due to costs. | | [...]

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▶️ Sun over the city: How solar pergolas and solar parking lots are conquering the urban energy transition
| Discover how solar pergolas and solar parking spaces are conquering the urban energy transition and making our cities more sustainable. | Did you know that our parking lots alone hold 24 gigawatts of untapped electricity potential? | | The future of photovoltaics is no longer just on the roof, but is happening directly above our heads in city centers. | Thanks to ingenious, transparent solar cells, previously unused areas like parking lots or pedestrian zones are being transformed into aesthetically pleasing power plants. | These innovative installations generate clean electricity, for example, for charging electric cars. | | At the same time, they offer practical weather protection and significantly enhance the urban landscape. | What was once a niche idea is developing into a rapidly growing multi-billion-euro market thanks to technological advancements. | | New political frameworks in Europe are accelerating the expansion of this smart infrastructure. | Learn how solar roofs are driving the urban energy transition and positively transforming the cityscape. | Immerse yourself in a future where smart solar technology makes our cities greener, more beautiful, and more energy-efficient. [...]

▶️ Learn more here
▶️ The salt battery on the way to the €20/kWh revolution – but Germany is once again getting in its own way
The battery revolution is here, and it's not based on lithium, but on ordinary salt! A new era of energy storage is beginning with sodium-ion technology. | These new batteries are not only incredibly cheap, but also extremely durable with up to 10,000 charge cycles. | They don't require expensive lithium or cobalt, making them more sustainable and cost-effective. | Germany could have been a pioneer, but a curious obstacle prevented construction in Berlin. | | Incredible, but true: A strictly protected, but never-before-seen toad stopped the multi-billion-euro project in the capital. | But Bavaria seized the opportunity and secured Europe's first large-scale factory for sodium-ion batteries. | The mega-factory, intended to break China's dominance in the battery market, is now being built in Lichtenfels. | A crucial step for Europe to avoid falling behind in global competition. | Learn all about the salt battery and the missed opportunities and new hopes for Germany as a manufacturing location. [...]

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▶️ Energy crisis 2.0? US-Israel-Iran war triggers natural gas price shock: sharpest price jump since the Ukraine war
A new energy crisis 2.0 threatens the global economy following a military strike against Iran. The subsequent closure of the Strait of Hormuz triggered a massive price shock. | This is the sharpest price increase for natural gas since the start of the war in Ukraine. | Europe, in particular, is caught in a dangerous trap. | | Gas storage facilities are at historically low levels, in some cases below 20 percent. | The global struggle for scarce liquefied natural gas (LNG) is now escalating. | Experts warn of an impending price explosion in the energy markets. | This could trigger a new wave of inflation and severely impact the economy. | Learn all the background information on the escalating crisis here. | | Read the details now and find out what's coming! | [...]

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▶️ The German energy transition: between expansion records and system failure
Germany's energy transition is experiencing a paradoxical situation, caught between record expansion and system failure. | While the expansion of solar and wind power is booming, the electricity grids are at their absolute limit. | In the north, green electricity is being curtailed en masse, resulting in billions of euros in costs for "phantom power." | At the same time, negative electricity prices and exploding grid fees for consumers are occurring. | The total costs of the energy transition could rise to as much as five trillion euros. | | Without a radical change of course, the system faces financial and structural collapse. | Politicians are under immense pressure to finally address this fatal system failure. | A new 10-point plan aims to pull the emergency brake through intelligent system integration. | | The right levers are missing to get green electricity to where it's needed. | Read why expansion has suddenly become a problem and what solutions are now urgently needed. [...]

▶️ Read more here

▶️ The PV market in Germany in 2026: Market development, price trends, storage and the new challenges in sales
| Discover the exciting market development of the German PV market for 2026 and what lies ahead. | We analyze the latest price trends and provide a sound forecast for your investment planning. | Learn about the crucial role modern energy storage systems will play in grid stability and energy independence. | We highlight the new challenges facing sales in the dynamic solar market. | Gain exclusive insights and data-driven facts about future industry developments. | Find out how these changes directly impact private homeowners and their energy concepts. | Understand the opportunities and challenges awaiting installers and companies in the photovoltaic sector. | We address the important question of whether investing in solar energy will still be worthwhile in 2026. | | Learn about the technological innovations that are further increasing the efficiency and profitability of PV systems. | Be ideally prepared for the future of solar energy in Germany with our comprehensive outlook. [...]

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▶️ Fuel reserves only 3 months: Defense contractor uncovers massive security gap – Decentralized energy islands instead of large refineries demanded
| A defense contractor is sounding the alarm: Europe's fuel reserves would only last a shocking three months in the event of a national emergency. | Rheinmetall is thus uncovering a massive security gap that could cripple critical infrastructure. | The war in Ukraine has made the high vulnerability of major central refineries painfully obvious. | As a solution, the company is calling for the development of decentralized energy islands. | | The focus should be increasingly on photovoltaics and wind power. | Supplemented by the production of e-fuels, this can reduce dependence on fossil fuels. | | According to Rheinmetall, the energy transition has suddenly become vital for defense capabilities. | | The company is therefore not primarily focusing on renewable energies for climate protection reasons. | | Rather, it's about a new European security architecture in the energy sector. | This new perspective shows why the German Armed Forces urgently need an independent energy supply. [...]

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▶️ From oil boiler to heat pump: A practical report and a worthwhile path to the private energy transition
| Discover the rewarding path from your old oil heating system to a modern heat pump. | Our case study shows you how the energy transition for your home can be easy. | Anyone still relying on fossil fuels for heating is not only burning oil, but also money. | Protect the environment and your wallet at the same time with an efficient heating solution. | | Smartly combine your heat pump with a photovoltaic system on your roof. | This way, you can easily double your self-consumption of the solar power you generate. | Depending on the size of your system, even a significant increase is possible. | Become independent of rising oil and gas prices for greater financial security. | Start now on a sustainable and cost-effective future for your home. | Learn all about the advantages of this smart combination and how to achieve it. [...]

▶️ Learn more here
▶️ Redispatch 2.0 and large-scale battery storage: Curse or Segen for the power grid? The ambivalent role of giant battery storage systems
Discover the massive battery tsunami currently rolling towards Germany, overtaking the energy transition. A shocking storage capacity of 720 gigawatts, driven by a massive drop in battery prices, is fundamentally changing our energy landscape. Learn why this boom is not government-mandated but purely market-driven, and is literally overwhelming the German power grid. With 78 gigawatts of large-scale storage already approved, a revolution is imminent that will stabilize the grid. The often underestimated China factor and the overcapacity in LFP technology are the decisive drivers of this development. We analyze whether this massive expansion could mean the final end of the dreaded "dark doldrums" (periods of low wind and solar power generation). Batteries are establishing themselves as by far the most cost-effective option for the necessary flexibility in the power grid. Understand the disruptive market forces that are making this unprecedented transformation possible. This wave of large-scale storage represents a capacity that far exceeds Germany's peak load. Read now what this unstoppable trend really means for the future of our energy supply | . [...]

▶️ Learn more here

▶️ Germany's battery tsunami: How large-scale storage systems are overtaking the energy transition
Discover the massive battery tsunami currently rolling towards Germany, overtaking the energy transition. A shocking storage capacity of 720 gigawatts, driven by a massive drop in battery prices, is fundamentally changing our energy landscape. Learn why this boom is not government-mandated but purely market-driven, and is literally overwhelming the German power grid. With 78 gigawatts of large-scale storage already approved, a revolution is imminent that will stabilize the grid. The often underestimated China factor and the overcapacity in LFP technology are the decisive drivers of this development. We analyze whether this massive expansion could mean the final end of the dreaded "dark doldrums" (periods of low wind and solar power generation). Batteries are establishing themselves as by far the most cost-effective option for the necessary flexibility in the power grid. Understand the disruptive market forces that are making this unprecedented transformation possible. This wave of large-scale storage represents a capacity that far exceeds Germany's peak load. Read now what this unstoppable trend really means for the future of our energy supply | . [...]

▶️ Learn more here
▶️ Fact check on the FAZ: Why the energy transition is not the real price driver: Fossil system costs as the actual drivers
Is the energy transition really driving up electricity costs, as the FAZ claims? | Our fact check on the current reporting reveals the true reasons for the price increases. | A new study by the EWI sheds light on the matter and contradicts the Frankfurter Allgemeine Zeitung's portrayal. | Contrary to the headline, wind and solar energy are not the main cause of the cost increase. | Rather, system costs are exploding due to our long-standing and expensive dependence on fossil fuels. | The analysis shows that the long-term consequences of fossil fuel dependence are the real drivers. | The FAZ headline thus proves to be misleading. | It conceals the massive burdens caused by fossil fuels. | Learn the facts behind the misleading claims and the true cost drivers. | We reveal why it is not renewables, but our fossil fuel past that is driving up electricity bills. [...]

▶️ Read more here

▶️ Germany's involuntary location gift to international SME competition – Top 5 most expensive electricity prices worldwide
Germany is grappling with a self-inflicted electricity price crisis, jeopardizing its competitiveness. Electricity prices in Germany are among the highest in the world, representing an enormous burden. | German companies are facing a precarious situation in global competition, particularly against the USA and China, due to high electricity costs. | High energy costs pose a serious challenge to Germany's entire economic standing. | This development is an unintended gift to international competition, especially for small and medium-sized enterprises (SMEs). | We analyze the reasons for Germany's leading position in electricity prices. | The crisis is a self-inflicted problem that turns energy into a disadvantage. | For German industry, the situation is a critical test with an uncertain outcome. | Learn about the solutions currently being discussed to safeguard competitiveness. | This article examines the global context and the urgently needed measures for Germany as a business location. | [...]

▶️ Read more here
▶️ Instead of lithium battery: Sodium battery from CATL and its new “Naxtra” technology – 10,000 charging cycles & dirt cheap
The era of lithium batteries is drawing to a close, as a new technology is on the horizon. | CATL presents a groundbreaking alternative with its sodium-ion battery and the "Naxtra" platform. | This storage technology enables an incredible 10,000 charging cycles, surpassing conventional batteries fivefold. | Moreover, its production is incredibly cheap, finally making stationary batteries truly profitable. | | Experience a true winter wonder for electric cars, as the battery won't give out even at -40 degrees Celsius. | This drastically reduces dependence on scarce raw materials like lithium. | | With this innovation, China is making a strategic move that could devalue the global lithium market. | The new sodium-ion technology addresses the crucial weaknesses of current lithium batteries. | Look forward to the future, as the first production vehicle with this revolutionary battery will arrive in mid-2026. [...]

▶️ Learn more here

▶️ AI boom at your expense? Growing electricity demand and rising electricity prices: AI data centers vs. the power grid
Artificial intelligence promises efficiency, but the AI boom has a costly downside. | The immense energy demands of AI data centers are putting our power grid to the test. | These data centers are becoming the biggest energy consumers, with their needs growing faster than power lines can be laid. | The result is looming shortages and increasing pressure on the entire energy infrastructure. | Could this mean your electricity bill will soon skyrocket to satisfy this thirst? | The central question is: Who will foot the bill for the multi-billion dollar investments in grid expansion? | | Virginia in the USA serves as a possible model, where tech giants are charged for their electricity consumption. | Without a fair distribution of costs, massive competitive disadvantages and a burden on all consumers are imminent. | It's a conflict between technological progress and the real costs to our society. | Find out why the AI boom could be at your expense and what solutions exist. [...]

▶️ Learn more here

⭐️ Renewable energies

▶️ The billion-dollar blind flight: How missing data in the power grid determines the success or failure of energy projects

▶️ PV bankruptcies: AgriPV GmbH, UrbanPV GmbH and the domino insolvency with GridParity

▶️ How Ursula von der Leyen and the EU Commission first silently approved the nuclear phase-out and now condemn it as a fatal mistake

▶️ Germany's missed solar revolution – yet again: Why 16 million roofs can do more than Europe's nuclear dreams

▶️ Historically low prices on the solar market are a thing of the past: This is why solar systems will become drastically more expensive again from now on

▶️ The factory that pays for itself – Why energy efficiency is no longer a cost-saving program, but a survival strategy

▶️ The myth of cheap electricity: Engineers plan, controllers warn: Will the energy transition break down due to costs?

▶️ Sun over the city: How solar pergolas and solar parking lots are conquering the urban energy transition

▶️ The salt battery on the way to the €20/kWh revolution – but Germany is once again getting in its own way

▶️ Energy crisis 2.0? US-Israel-Iran war triggers natural gas price shock: sharpest price jump since the Ukraine war

▶️ The German energy transition: between expansion records and system failure

▶️ The PV market in Germany in 2026: Market development, price trends, storage and the new challenges in sales

▶️ Fuel reserves only 3 months: Defense contractor uncovers massive security gap – Decentralized energy islands instead of large refineries demanded

▶️ From oil boiler to heat pump: A practical report and a worthwhile path to the private energy transition

▶️ Redispatch 2.0 and large-scale battery storage: Curse or Segen for the power grid? The ambivalent role of giant battery storage systems

▶️ Germany's battery tsunami: How large-scale storage systems are overtaking the energy transition

▶️ Fact check on the FAZ: Why the energy transition is not the real price driver: Fossil system costs as the actual drivers

▶️ Germany's involuntary location gift to international SME competition – Top 5 most expensive electricity prices worldwide

▶️ Instead of lithium battery: Sodium battery from CATL and its new “Naxtra” technology – 10,000 charging cycles & dirt cheap

▶️ AI boom at your expense? Growing electricity demand and rising electricity prices: AI data centers vs. the power grid

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