Während die „Dunkelflaute“ längst als kritisches Szenario in der Energieversorgung bekannt ist, rückt ihr meteorologisches Gegenstück zunehmend in den Fokus: die Hellbrise. Gemeint ist eine
Ein Schwarzstart durch Batteriespeicher bezeichnet die Fähigkeit eines Batteriespeichersystems, ein Stromnetz oder ein Teilnetz nach einem vollständigen Stromausfall – also ohne externe Stromversorgung – eigenständig
Die rechtlichen Rahmenbedingungen für dezentrale Energieversorgungskonzepte, Kundenanlagen und Mieterstrom müssen von der deutschen Bundesregierung neu geregelt werden. Ausgangspunkt ist das Urteil des Europäischen Gerichtshofs (EuGH)
The innovation tendering procedure (InnAusV) is another funding instrument for the energy transition in Germany. The legislator introduced it in order to promote innovative approaches in the energy transition beyond the classic EEG funding system.
Solar Package I has created new EEG options for large-scale storage systems by relaxing the previous storage-related exclusivity principle. This principle had existed since the early days of the EEG and
Effective surge protection for PV systems not only guarantees the long-term operation and value retention of the system, but also makes a significant contribution to operational safety. Whether through
The Market Stability Reserve (MSR) is a key instrument in European emissions trading (EU ETS). It was introduced in 2019 to reduce surpluses of emission allowances on the market, ensure price stability
The so-called 2,500-hour regulation is one of the special regulations for electricity-intensive companies and, like the band load or atypical grid usage, is regulated in Section 19 StromNEV. Companies
The Fuel Emissions Trading Act (BEHG) is part of the national emissions trading system (nEHS) in Germany, which has been in force since January 2021. BEHG trading regulates the CO₂ pricing of fossil fuels.
Dynamic electricity tariffs are price models in which the electricity price is adjusted to the current market prices on the electricity exchange at short time intervals - typically hourly or quarter-hourly.
DIN V 18599 is the central standard for the energy assessment of buildings in Germany. It is used to calculate the energy requirements of residential and commercial buildings.
Negative electricity prices occur when the supply of electricity significantly exceeds demand and there is insufficient storage capacity. This phenomenon occurs particularly frequently at high
BESS stands for "Battery Energy Storage System" and goes far beyond the mere storage of electrical energy, such as a simple battery. Such systems use networked
The EU Buildings Directive, also known as the Directive on Energy Performance of Buildings (EPBD), aims to improve the energy efficiency of buildings in the European Union
Engineering, Procurement and Construction actually describes a common type of project management in the construction industry. However, the term is also increasingly being used in the implementation of
At the end of January 2025, the so-called Solar Peak Act passed the Bundestag, which contains key regulations for PV systems in 2025. In mid-February, the Bundesrat also approved the "Act on the
Increasing photovoltaic self-consumption (PV electricity) is a decisive factor for companies in reducing energy costs and increasing their independence from the power grid. Especially through the
The dynamics on the energy exchanges offer companies with large-scale battery storage systems enormous opportunities to reduce their procurement costs by optimizing the electricity market. Intelligent use of electricity price volatility
ZEREZ is the central register for unit and component certificates for generation units at all voltage levels in Germany. It provides a central platform for the verification of the
A complete photovoltaic offer for a company is usually more complex than for private households. It differs primarily in terms of size, use and cost-effectiveness. Companies
The potential of roof surfaces for the installation of solar systems on commercial properties is considerable. Companies that do not wish to invest in a PV system themselves are faced with the
A capital investment company (KAG) faces the challenge of making its real estate portfolio more sustainable. ESG-compliant assets for a KAG are becoming increasingly important and the focus is
The tilt angle for solar modules is one of the decisive variables for the efficiency of photovoltaic systems. The energy yield can be maximized by setting the tilt angle correctly.
Heating large commercial buildings often presents companies with considerable challenges. High energy costs, uneven heat distribution with poor insulation and increasing demands for sustainability and climate protection require
The use of renewable energies is a central component of the global energy transition to decarbonize the economy. In this context, heating with photovoltaics is becoming increasingly important for companies.
When repowering PV systems, older photovoltaic systems are upgraded with modern, more powerful components in order to increase yield and efficiency. Measures such as the
Modern energy management systems (EMS) are far more than just tools for recording energy consumption data. Modern cloud-based EMS solutions, such as the CUBE EfficiencyUnit, offer companies a wide range of
Commercial photovoltaic systems in certain power ranges require a system certificate to ensure the stability and safety of the electricity grid. In Germany, the Ordinance on the Verification of Electrotechnical Characteristics
In the energy industry, base load refers to the minimum amount of electrical power required in an electricity grid around the clock to meet continuous demand.
With rising energy costs and growing pressure to protect the climate, the development of sustainable energy concepts is becoming increasingly important for companies. A well thought-out energy concept can not only contribute to
Since 2020, battery storage revenues in the German energy market have developed positively and increased continuously, which is attributable to various influencing factors and market trends. This positive
Sector coupling describes the systematic linking of different energy sectors - mainly electricity, heat, mobility and industry - in order to cover the entire energy demand in a more efficient and environmentally friendly way.
In addition to replacing fossil fuels with renewable energy sources and energy efficiency measures, the goal of climate neutrality requires further innovative solutions. Two additional key technologies in the field of CO₂ reduction are CCS
A grid connection point (NCP) is a node in the electricity grid at which various electricity generators, such as wind or solar power plants, as well as consumers and different grid levels are connected to each other. At
Under the 7,000-hour rule, large consumers of electricity in Germany are entitled to individual grid fees if their electricity consumption is consistent, resulting in discounts of up to 90 %.
Depot charging refers to a charging strategy in which electric vehicles are charged at their depot or base station and the associated technologies. E-mobility for commercial vehicles can only succeed
In its latest study, the Fraunhofer Institute for Solar Energy Systems (ISE) took a close look at the production costs of various power generation technologies. The focus of the analysis was
Reactive current occurs in PV systems as soon as the inverters convert the direct current of the solar modules into alternating current. As reactive currents only form in AC or three-phase grids, this
Atypical grid usage describes a special form of grid usage in which a consumer or company organizes its consumption times in such a way that it uses the peak load times in the electricity grid in a different way.
The band load describes the constant, continuous demand for electrical power that is always present, while the band current is the constant amount of electricity that is available for the
The German government mentions a switch to a technology-independent capacity market for the first time in its plans for the Power Plant Security Act and the development of the electricity market. Capacity markets are gaining ground in Europe, which
On 27.05.2024, the EU Council adopted NZIA, the "Net Zero Industry Act" or "Net Zero Industry Act". The regulation is intended to promote the industrial use of net-zero technologies to achieve
Sustainable investments are becoming increasingly attractive, and not just as a result of the energy transition. Photovoltaics as a capital investment is considered particularly safe and offers extremely interesting financial incentives
A dark doldrums refers to the simultaneous occurrence of darkness and calm, which drastically reduces electricity generation from wind and solar energy. This weather situation typically occurs in winter
There are countless certifications, standards and norms on the topics of sustainability and ESG. Most of them relate to individual parts, processes or areas of a company, are
Status: 30.01.2025. The current federal government has agreed a general nationwide photovoltaic obligation with uniform regulations for new private and commercial buildings in the coalition agreement. So far, however
The Science Based Targets initiative (SBTi) is an organization that supports companies in setting their own science-based climate targets and creating transition plans. It is
The integration of solar systems into the public electricity grid is a complex process that requires careful planning and coordination. A central step in this process
In mid-March 2024, the EU member states voted in favor of the weakened version of the European Supply Chain Directive CSDDD (Corporate Sustainability Due Diligence Directive). Briefly explained, the EU directive obliges
The European Financial Reporting Advisory Group (EFRAG) is currently developing standards for sustainability reporting by small and medium-sized enterprises on behalf of the EU. The first drafts
The "special equalization scheme" is an instrument that serves to relieve certain energy-intensive companies of the costs resulting from the promotion of renewable energies.
By marketing the provision of industrial electricity storage capacities for balancing energy, clever operators can generate considerable additional income. The fact that the use of large batteries
Through its expert network (BMDV), the DWD once again published its annual energy weather review for 2023 at the end of March. According to this, the average values for global radiation
The environmental impact assessment (EIA) is actually only one component of the legislation on "environmental assessments" of the Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection (BMVU). Another building block
Alongside wind power, solar power from photovoltaics is now one of the most important pillars of the energy transition. In view of climate change and the finite nature of fossil fuels, many companies are looking for
There is still no nationwide solar obligation for properties in Germany at the start of 2024. The current federal government had already enshrined it in the coalition agreement,
VDE-AR-N 4110 is the guideline for the connection and commissioning of photovoltaic systems and other renewable energy systems with medium voltage. Its update from September
Wafers are thinly sliced disks, typically made of materials such as silicon, germanium, silicon carbide or other semiconductor materials. They are used in semiconductor manufacturing to produce integrated circuits, microchips
EU regulations will require many companies to carry out comprehensive climate risk analyses from 2024. One way of measuring and communicating this is TCFD reporting. It refers to
The abbreviation kVA stands for "kilovolt ampere" and is a unit of measurement for the so-called apparent electrical power. The kVA unit is used in various areas of electrical engineering
Solar modules are becoming more and more efficient and technological progress is constantly increasing the performance ratio of photovoltaic systems. Everyone is currently talking about bifacial PV modules and
There are different types of disconnectors for PV systems. Their use has been required by law since 2006 and they are an important component alongside overvoltage protection
A Power Purchase Agreement (PPA) is an individual contractual agreement between an electricity producer and an electricity consumer. In a PPA, the electricity producer undertakes to supply a certain
The Carbon Border Adjustment Mechanism (CBAM), or CO₂ border adjustment system, is part of the European Union's "Fit for 55" package and aims to reduce greenhouse gas emissions in the
There are no uniform industrial electricity prices in Germany or Europe. In Germany and the other European countries, industrial electricity prices are extremely individual.
Companies that have not yet switched to their own environmentally friendly and CO₂-neutral energy production are now faced with the challenge of finding sustainable solutions to reduce their energy costs.
Around 90 % of the electricity price for commercial and industrial customers in 2023 will be made up of procurement, sales and grid fees and 10 % of
The Corporate Sustainability Reporting Directive (CSRD reporting obligation) presents companies with various hurdles due to the stringent requirements for reporting on sustainability issues, as errors in this area
In mid-October 2023, the EU energy ministers agreed on a reform of the electricity market. Against the backdrop of the enormous rise in electricity prices in 2022, in future
Most banks, such as ING Germany, UBS, Deutsche Bank, DZ Bank and Commerzbank, are now pursuing their own climate plans, according to which they will provide loans for companies in the future.
On September 21, 2023, the German Bundestag passed the Energy Efficiency Act (EnEfG). It is officially known as the "Act to Increase Energy Efficiency" and is a
The energy supply of companies is facing new challenges today. Rising energy costs, the pressure to reduce CO₂ emissions and increasing digitalization require innovative energy solutions
The DWS Group, which is listed on the German S-Dax, had presented fund products as "sustainable" or greener than they actually are and was promptly criticized by the US Securities and Exchange Commission (SEC).
Ground-mounted photovoltaics is an extremely efficient method of harnessing solar energy and generating clean, emission-free electricity. In contrast to conventional roof mounting
Guarantees of origin (GOs) or green electricity certificates mean additional financial resources for operators or investors of non-subsidized renewable energy plants. Trading in guarantees of origin is therefore becoming increasingly important. Through
Large commercial and industrial roofs are ideal for generating electricity cheaply and ecologically using PV roof systems. These systems consist of solar modules that are mounted on the roof.
The SAIDI value (System Average Interruption Duration Index) indicates the length of the average power outages. It is measured either in hours or minutes per year and
Photovoltaic carports are an innovative solution for sustainable energy generation on company premises. They offer both environmental benefits and practical advantages for operators. These carports
The cabling of PV modules on the DC side of a commercial photovoltaic system must be carefully calculated, planned and implemented. It has a decisive influence on the
The third-party volume delimitation refers to companies that make use of energy privileges and/or produce energy themselves and pass this electricity on to so-called third parties or a final consumer.
A load profile is a graphical representation or data recording that shows the energy consumption of a consumer, system or company over a certain period of time.
The ideal alignment of PV systems plays a crucial role in maximizing energy production from sunlight. Correct alignment not only ensures efficient use of
How large should PV systems be planned by companies? The answer to this question is actually quite simple: always as large as possible! This simple principle
On the road to climate neutrality by 2050, the expansion of renewable energies must be accelerated. In this context, space efficiency in energy generation plays a key role.
The manufacturer's specification "Watt Peak" (Wp) is not a standardized designation for the output of solar modules. However, it is equated with the nominal output of a module and is used
Sustainability and ESG criteria are also very popular with companies. A commercial solar system with storage is becoming increasingly important. Companies are looking for efficient options,
Smart meters or "smart metering" have long been standard and mandatory in the industry. But what exactly does this mean and what advantages does such a system offer?
Residual load is a term used in the energy sector, particularly in the context of electricity supply. It refers to the difference between the actual demand for electricity (consumption) and the available
Photovoltaic systems (PV systems) are generally extremely low-maintenance and have a long service life. Nevertheless, the maintenance of PV systems is essential to ensure that they work efficiently and reliably.
If the solar modules are installed correctly, experts recommend a complete photovoltaic cleaning only every two years. This is because they are actually cleaned by rain due to the angle of inclination
Every operator wants to achieve the best possible PV yield and generate as much electricity as possible with their system. This applies to private operators as well as
The planning and development of solar systems for companies plays a decisive role in the use of solar energy as a sustainable energy source. It includes the planning, the
The Building Electromobility Infrastructure Act (GEIG) is a pioneering legal regulation that promotes the expansion of the charging infrastructure for electric vehicles in German buildings in accordance with the European Buildings Directive EPBD 2018 by
According to the Corporate Sustainability Reporting Directive (CSRD) adopted by the EU Parliament on November 10, 2022, the reporting obligation will also apply to SMEs for the first time from 2024. To date
All photovoltaic systems that CUBE CONCEPTS implements for its clients are subsequently insured. Although photovoltaic insurance is not mandatory in Germany, it is particularly important in the commercial sector.
A particularly efficient method of generating clean and CO₂-neutral energy is the installation of photovoltaics on flat roofs, as is often the case with commercial and industrial properties.
The German Insurance Association (GDV), in cooperation with the German Association of Property Insurers (VdS), has published various guidelines to ensure that insurance-compliant PV systems can be approved.
The EU taxonomy is a set of rules developed by the European Union as part of the "Action Plan on Financing Sustainable Growth" for sustainable financing since 2018. In the
The dimensioning factor for inverters describes the ratio between the maximum direct current (DC) that can be generated by all installed photovoltaic modules and the maximum alternating current (AC) output power of the entire PV system. It
The Eco Management and Audit Scheme (EMAS) is a voluntary and holistic environmental management system introduced in the European Union (EU), in which approx.
DIN EN 17463 is the standard for the valuation of energy-related investments (VALERI for short) and comes into force at the latest in the
An independent energy audit in accordance with DIN EN 16247 is an important step for all companies that want to increase their energy efficiency and reduce their energy costs. Through the
The use of solar energy has increased enormously in recent decades. Photovoltaics has proven to be an efficient energy source, particularly in industry and commerce.
The tasks of the solar experts at CUBE CONCEPTS are varied and demanding. Photovoltaic project development plays a decisive role in the optimal use of renewable energies, as it
The topics of renewable energies and sustainability are key buzzwords in politics and among the public. Photovoltaics offers numerous advantages for companies. One of the most obvious
What is a CSR or ESG strategy, why should companies be concerned with it and why is PV marketing an important building block in overall corporate communication? Here
The redispatch procedure originally only applied to electricity producers or photovoltaic system operators with an output of 10 MWp or more, but was expanded to Redispatch 2.0 in October 2021 and
There are still many prejudices, myths and rumors about commercial PV systems. Yet they are the most sustainable, cheapest and undisputed energy sources when
How effectively an entire photovoltaic system works essentially depends on the efficiency of the solar cells, the cabling and the power of the inverter. All values are summarized
Solar energy from solar power plants is the energy obtained from solar radiation. It is a primary energy source and can be used in various ways to generate electricity or heat.
Wind and solar energy are so-called volatile energy sources, which means that their electricity production is not constant and fluctuates depending on weather conditions or other factors
DIN EN ISO 50001 is an international standard for energy management systems (EnMS) and can be used by all companies to improve their energy efficiency, optimize their energy consumption and increase their energy efficiency.
According to figures from the German Federal Motor Transport Authority (KBA), electric vans accounted for around 10.2% of all newly registered light commercial vehicles in Germany in 2021. In the
The term decarbonization generally refers to the reduction of CO₂ emissions. These are produced when fossil fuels are used to generate energy and are essential for the
Companies can benefit from the GHG quota (greenhouse gas reduction quota) in different ways: If the company fleet consists of various e-vehicles, the CO₂ savings or CO₂ certificates can be purchased on the quota market.
When installing a photovoltaic system on commercial and industrial roofs, various DIN EN, VDE & IEC specifications must be observed. All PV roof systems from CUBE CONCEPTS are
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