Energy efficiency in companies – energy management
according to ISO 50001 and energy audits according to DIN EN 16247

Energieeffizienz im Unternehmen – Energiemanagementsystem nach ISO 50001 bei Analyze HSE GmbH | Energy efficiency in the company – energy management system to ISO 50001 at Analyze HSE GmbH

Rising energy costs and increasingly complex requirements are leading many companies to face the same challenge: using energy consciously and reducing consumption in a targeted manner. An energy management system according to ISO 50001 anchors this control permanently. It reveals potential savings, documents progress annually, and keeps the results measurable. It is about a cultural change. It reduces costs and anchors sustainability in the company.

While it is a legal requirement for many companies, some others can also implement it voluntarily. This makes energy efficiency a competitive advantage.

Energieeffizienz im Unternehmen – Energiemanagementsystem nach ISO 50001 bei Analyze HSE GmbH | Energy efficiency in the company – energy management system to ISO 50001 at Analyze HSE GmbH

Energy audit according to DIN EN 16247 – obligation or opportunity?

For many companies, the audit according to DIN EN 16247 is a legal requirement. According to the German Energy Services Act (EDL-G), all companies that are not classified as SMEs have been required to conduct a regular audit every four years since December 5, 2015. Used correctly, it goes beyond a mere mandatory audit. It shows how energy is actually used, where losses occur, and which measures make economic sense. In production, building management, or support processes.

Each audit provides practical recommendations that quickly show results. The control format becomes a tool that visibly increases efficiency.

What is an energy audit: goals, benefits, requirements

An energy audit in accordance with DIN EN 16247 takes a close look at how energy is used in a company. It shows which processes consume a lot and where savings can be made. On this basis, concrete steps can be planned to reduce costs and consumption in the long term. As a rule, the energy audit applies to companies with a total annual energy consumption of over 500,000 kWh. Large companies are legally required to carry out an audit. Smaller businesses and local authorities can participate voluntarily and benefit from a clear overview of their consumption – and from ideas on how to use energy more efficiently in a targeted manner.

Kreisdiagramm zur Aufteilung des Elektroenergieverbrauchs nach Verbrauchsgruppen im Energiemanagement der Analyze HSE GmbH | Pie chart showing the breakdown of electricity consumption by usage groups in Analyze HSE GmbH’s energy management

Procedure and requirements of an energy audit

An energy audit in accordance with DIN EN 16247 follows a clear procedure. First, the areas with the highest energy consumption in the company are identified. These include, for example, production facilities and buildings, but also vehicle fleets and supply systems. The energy data is then evaluated according to defined criteria. According to the BAFA information sheet, the audit must cover at least 90% of total energy consumption and take all important energy sources into account. The result is a comprehensive picture that shows where energy is being lost and where your company can make targeted savings.

Energy audits in production areas: spot checks, inspections, interviews

During the audit, the energy data provided by the company is checked on site. The inspections and discussions with employees give us a realistic picture. It is important not to overlook any relevant consumers. In this way, the main energy consumers can be identified and evaluated. Based on this, we will derive suitable savings measures.

Results: findings, root cause analysis, action plan

At the end of the energy audit, companies receive a detailed audit report that summarizes the results in a transparent manner. This includes findings on consumption and weak points, a root cause analysis, and a presentation of possible savings potential. These are calculated using recognized methods, such as the net present value method according to DIN 17463. The results are an action plan that outlines investments, individual steps, and their effects. highlighting options that make sense from a technical and economic standpoint.

Inspektion technischer Anlagen – Beratung zu integrierten Managementsystemen durch Analyze HSE GmbH | Inspection of technical facilities – consulting on integrated management systems by Analyze HSE GmbH

BAFA review and list of auditors – legally compliant energy audits

Energy audits in accordance with DIN EN 16247 are monitored by the Federal Office of Economics and Export Control (BAFA). The BAFA conducts random checks on implementation and publishes a list of qualified auditors. Only experts registered on this list are permitted to conduct audits in compliance with the law. This ensures the quality of the audits and the traceability of the results.

Legal certainty: Reliable. Transparent. Audit-proof.

Laws, regulations, and standards are constantly changing—we keep track of them all. Whether it’s energy, the environment, quality, or occupational safety, we support you in setting up and maintaining your legal register. This ensures that your company remains legally compliant and audit-proof at all times.

Do you have any questions about your legal obligations? Feel free to contact us. Thanks to our extensive experience, we can offer initial advice on how to proceed. For specific legal enquiries, we draw on our extensive network of lawyers.

Energy management system according to ISO 50001 – permanently anchoring energy efficiency in your company

An energy audit provides a snapshot. An energy management system according to ISO 50001, on the other hand, ensures continuous improvement. Companies systematically record and evaluate their energy flows, set clear goals, and demonstrate annually that savings potential is being exploited in order to create cost certainty. At the same time, it establishes a culture of energy efficiency that is put into practice. Employees, management, and technology all contribute to this common goal. In such a way, energy efficiency moves from being an individual project to an integral part of corporate strategy.

Defining energy policy: roles, responsibilities, expertise

ISO 50001 requires a clearly defined energy policy that is actively supported by company management. The roles and responsibilities of those involved are clearly defined and supported by evidence of their competence. Thus, energy management remains present and binding at all levels.

Recording energy consumption: measurement concept, EnPI, data quality

The system is based on recording all significant energy consumption. This includes a measurement concept, defining Energy Performance Indicators (EnPIs), and ensuring data quality. These measurements reveal where the greatest energy consumption lies and where savings would have the greatest effect.

Monitoring & reporting – EnPI trends, deviations, measures

An effective energy management system requires ongoing monitoring. Regular evaluation of EnPI trends reveals developments early on, allowing for the timely identification of deviations. Based on these evaluations, targeted measures and adjustments can be initiated. This ensures that processes remain controllable and that continuous improvement stays on track.
Lastgangdiagramm im Energiemanagement-Audit zur Analyse von Stromverbrauchsdaten bei Analyze HSE GmbH | Load profile chart in an energy management audit for analysing electricity consumption data at Analyze HSE GmbH
Muster eines Effizienz-Energieflussdiagramm- Sankey V0-2025

Bundling evidence – process indicators, effectiveness, continuous improvement

The system’s effectiveness must be demonstrated through internal audits and management reviews. This includes process indicators, evidence of improvements achieved, and documentation of the improvement process. Annual evidence is mandatory to guarantee that energy efficiency is planned and implemented.

Certification and audits – successfully complete ISO 50001

The certification audit marks the completion of the introduction of an energy management system in accordance with ISO 50001. Accredited certifiers will check to see if the system has been implemented effectively. We prepare your company for this audit by carrying out internal audits and checking the relevant documentation. Doing so makes your certification process predictable and reliable.

Preparing for certification – documentation, management review, internal audits

Before the external audit, all documents are compiled and evaluated. These include the energy policy, evidence of EnPI, monitoring results, and management reviews. Internal audits serve as a dry run revealing any gaps in good time.

ISO 50001 certification – procedure & recertification

ISO 50001 certification is carried out by accredited certification bodies. The process takes place in two stages. First, the documents are reviewed, followed by an on-site audit. After the certificate has been issued, annual surveillance audits follow. Recertification is required every 3 years. This ensures that your energy management system remains compliant with standards and meets international requirements.

Platform for waste heat – legal basis § 17 EnEfG

The Platform for Waste Heat makes it possible for the first time to see where waste heat potential arises in Germany and how it can be utilized. Companies with a total annual final energy consumption of more than 2.5 GWh must store their waste heat data there. The information is publicly available and supports German authorities in heat planning in accordance with the new Heat Planning Act.

The aim is to prevent waste heat from going unused and instead to use it as an energy source for sustainable heating networks, based on the Energy Efficiency Act (EnEfG), which came into force on November 17, 2023.

The accompanying information sheet explains the requirements, reporting channels, and deadlines in detail:

Download information sheet

We help you to correctly implement your obligations – from data collection to publication.

Economic efficiency, subsidies, and legal certainty – a holistic approach to energy efficiency

Economic efficiency assessment according to DIN EN 17463 (VALERI) – making informed investment decisions

The net present value method according to DIN EN 17463 (also known as VALERI) is used to systematically check the economic efficiency of efficiency measures. This allows you to compare investments, set priorities, and make informed decisions. The aim is to achieve transparency for management and controlling.

Subsidies for energy measures support your project

The introduction of energy management systems and the implementation of efficiency measures are often subsidized by government programs, for example by BAFA or KfW. We would be happy to check which programs are suitable for your company. We prepare the applications and accompany you through all the steps until approval is granted. This allows you to make full use of the available subsidies.

Energy-related legal and compliance obligations

Laws and regulations in Germany such as the Energy Services Act (EDL-G) and the Building Energy Act (GEG) set out clear obligations. We determine what this means for your company, registered in Germany. As part of this, we maintain an up-to-date legal register and anchor the requirements in your energy management system. Thereby creating legal certainty, reducing risk, and strengthing trust among customers and authorities.

faq

Answers to your questions about
energy management systems & audits

Which companies in Germany are required to conduct an energy audit?

Companies that consume more than 500,000 kWh of energy per year or are not classified as SMEs must carry out an energy audit in accordance with DIN EN 16247 every four years in accordance with the Energy Services Act (EDL-G). The aim is to identify and specifically exploit potential savings for large consumers.

What are the advantages of a voluntary energy audit?

Even if it is not mandatory, an energy audit can still be useful. It provides a clear overview of consumption, highlights specific savings potential, and provides a sound basis for investment decisions. This makes energy efficiency a predictable competitive advantage.

What are the advantages of ISO 50001 certification?

A certified energy management system in accordance with ISO 50001 ensures that energy efficiency becomes an integral part of everyday work in the company. Annual reports show the development and provide certainty in planning. This strengthens confidence in your company – among customers, partners, and authorities. In addition, subsidy programs can be used and tax advantages can often be secured.

What role do EnPI (energy performance indicators) play in energy management?

EnPI are key performance indicators that make energy consumption measurable and comparable. They show whether measures are effective, where deviations occur, and where there is further potential for savings. In this way, energy efficiency and improvements can be documented in a comprehensible manner, both internally and externally.

What legal obligations must companies observe in energy management?

In addition to audit and certification requirements, there are numerous legal requirements in Germany, for example from the EDL-G, the Building Energy Act (GEG), or the EU taxonomy. Companies must regularly review these requirements and demonstrate compliance. A structured legal register in the energy management system creates transparency and legal certainty.

How can you prepare for an ISO 50001 audit?

Good preparation for the ISO 50001 audit begins with internal audits and a complete management review. All relevant evidence, from energy policy to EnPI to monitoring results, should be up to date and clearly documented. Checklists and a dry runl allow you to identify and close any gaps early on, ensuring that certification is a success.
Energieeffizienz im Unternehmen – Energiemanagementsystem nach ISO 50001 bei Analyze HSE GmbH | Energy efficiency in the company – energy management system to ISO 50001 at Analyze HSE GmbH

Your next step

Whether it’s a legal requirement or voluntary optimization, we support you in introducing an effective energy management system or conducting an energy audit. From recording energy flows to evaluating effectiveness, we develop a system that permanently reduces costs and takes advantage of funding opportunities.