Renewable energy in large companies: examples and results

The rise of renewable energy sources has become not only a priority from an environmental perspective, but also an increasingly strategic issue in the corporate sector. For large companies, legal compliance is no longer enough: long-term competitiveness and sustainability goals also require the introduction of green solutions.

In this article, we present the renewable energy sources currently used at the operational level, the return on investment, and the technological combinations that have proven effective in industrial, office, and logistics environments. We will also discuss solar parks, wind turbines, geothermal systems, and strategies for corporate energy efficiency.

Finally, we will use specific examples from large companies, figures, and visions of the future to illustrate how carbon neutrality can be achieved. In addition to the practical guide, we will also answer the most important questions in the FAQ section: subsidies, operation, risks, and technological choices.

Why is the use of renewable energy sources a strategic issue for large companies?

For large companies, the use of renewable energy is no longer just an environmental or image issue—it is a strategic investment that brings benefits on several fronts. First, operating costs can be reduced because price fluctuations in traditional fuel-based and fossil energy sources—whether electricity or gas/heating—pose a major financial risk. A stable and partially independent energy supply from green energy sources helps reduce vulnerability to price volatility.

Secondly, the regulatory environment – both EU and domestic legislation – strongly encourages the reduction of carbon footprints, creating emission quotas, tax breaks, and subsidy schemes for the introduction of renewable energies. If a company does not act in time, it may find itself at a competitive disadvantage (e.g., export markets, supply chain requirements, ESG ratings).

Third advantage: reputation and brand value. Consumers, investors, and partners increasingly expect sustainable operations. "Green" companies have better employee morale and greater appeal; their access to capital and markets improves. Increasing energy independence and resilience is also key: in the event of weather disruptions, energy shortages, and price changes due to climate change, renewable energy sources—especially locally produced energy—reduce risk.

Types of renewable energy sources that can be used at the operational level

In addition to installing solar panels ,more and more companies are alsousing energy storage systems that allow them to store the green electricity they generate and use it when needed, for example in the evening or during cloudy periods when solar panels are not producing enough energy. Industrial energy storage plays a key role in ensuring a continuous energy supply and optimizing costs in such an environment.

Energy efficiency and sustainability goals in the corporate sector

Energy efficiency is one of the most direct ways for a large company to drastically reduce its operating costs while reducing its environmental footprint. This includes insulating buildings, using modern lighting systems (e.g., LED technology), energy-efficient equipment, automated systems, and energy management systems. Such measures not only reduce energy consumption in the short term, but also help to achieve sustainability and ESG goals: reduced carbon footprint, better return on investment, and a positive corporate image.

Solar parks and rooftop systems at manufacturing companies

SOLARKIT has implemented solar projects at several prominent industrial and commercial sites, such as the Gyermely, Berlini Park, and Pappas Auto facilities. Based on these references, experience shows that a solar park of around 1.5 MW (or large-scale roof covering) can generate a significant amount of green electricity on its own, contributing to the sustainability goals of the manufacturing unit.

The installation of such systems is particularly beneficial for companies with high electricity consumption, as it:

• it reduces the amount of energy purchased from the external grid,
  
  
• mitigates the financial risks associated with energy price fluctuations,
  
  
• provides a more stable, self-sufficient energy system in the long term.

The use of wind energy in industrial and logistics centers

Although wind energy currently accounts for a smaller proportion of total electricity production in Hungary than in many Western European countries, technological advances and increased capacity are enabling large companies and logistics centers to partially support their own energy supply.

Logistics centers with large covered warehouse buildings may have space for the installation of wind turbines, but it is important to thoroughly examine the wind energy potential, noise, and licensing issues.

Geothermal energy and cooling/heating optimization in office buildings

The use of geothermal energy is particularly effective when buildings have high heating and cooling requirements, such as office buildings. Geothermal probes, thermal wells, and heat pumps can reduce the use of fossil fuels and save significant electricity costs. To achieve this, the system must be properly sized, taking into account local geological conditions and investment costs.

Cost savings: examples of return on investment at the large enterprise level

The role of facility management and the use of renewable energies

Facility management is key if you want to make the transition to renewable energy sources as a large enterprise. This department is responsible for optimizing energy use, ensuring the efficiency of maintenance cycles, and maximizing the lifespan of equipment. When infrastructure such as insulation, air conditioning, and heating and cooling systems are working well, less energy is needed, so a smaller system may be sufficient to meet energy demands. This reduces investment costs and speeds up return on investment.

For example, if you upgrade the lighting in an office building (switch to LED lamps) and introduce automated controls, these measures can reduce electricity consumption by as much as 10-20%. If you also install solar panels or a heat pump system, the initial investment costs (roofing, permits, installation) will quickly pay for themselves – usually within 5-8 years, but this depends on local subsidies, energy prices, and the size of the system.

Procurement considerations: tendering, contractor selection, and risk management

The return on investment depends largely on the type of tender you issue, who you hire as a contractor, and how you manage the risks of the project. This includes:

• Analyzing energy prices and tariffs in order to provide a realistic estimate of cost savings and revenue
  
  
• Thorough assessment of contractors' technical experience, references, guarantees, and maintenance services
  
  
• Taking into account permitting and grid connection costs and regulations
  
  
• Managing weather, regulatory, and market risks for projects—e.g., extreme weather, price volatility, changes in support schemes
  

Return on investment example from Hungary:

According to data from the Central Statistical Office, by 2023 the share of renewable energy sources in total final energy consumption will have grown to a record 17.4%, indicating that more and more investments are becoming economically sustainable.

Another example: according to a studyby the MNNSZ (Hungarian Solar Panel and Solar Collector Association?), projects that would create a 10 GW renewable energy portfolio would bring economic and environmental benefits, significant tax revenues, and import substitution.

Examples of large companies introducing renewable energy

The use of renewable energy sources among large companies is no longer just a green alternative, but also a business decision that can bring long-term financial benefits. Many of the largest companies have integrated renewable energy into their operations to reduce harmful emissions and lower their long-term costs. Below are some successful examples that illustrate how green energy can be integrated into the operations of large companies.

Combining renewable and non-renewable energy sources

A continuous, secure energy supply is crucial for companies, which is why more and more are building systems where renewable energy sources supplement traditional grid or fossil fuels. Solar and wind energy production, for example, can be combined with electricity from the external grid, thereby reducing costs and dependence on market prices.

SOLARKIT has implemented projects of this kind at several industrial and commercial sites, including Gyermely, Pappas Auto Salesianer, and the Berlin Park site.

Vision for the future: achieving carbon-neutral operation and energy independence

Carbon-neutral operation and energy independence are key goals for the companies of the future. In many countries around the world, including Hungary, companies that are committed to promoting sustainable operation are increasingly coming to the fore. To achieve carbon neutrality, companies must not only use renewable energy, but also increase energy efficiency at all levels of their buildings, machinery, and systems. Energy independence, on the other hand, allows companies to be self-sufficient when it comes to generating their own energy.

What subsidies and tax breaks are available for large-scale renewable energy investments in Hungary?

In Hungary, there are a number of state subsidies and tax breaks available for renewable energy sources. Under the Green Investment Program, companies and industrial facilities can apply for subsidies that support sustainability goals. In addition ,energy efficiency subsidies are also available, which provide preferential financing options specifically for large companies.

How can the long-term operation and maintenance of projects be ensured?

An appropriate maintenance and operation strategy is essential for the long-term success of projects based on renewable energy sources. Companies must ensure regular inspection and maintenance, as well as the continuous availability of on-site experts. Technological innovations such as smart energy management and remote diagnostics can significantly increase the efficiency of systems.

What risks should be considered in a large-scale corporate project?

There are a number of risks associated with large-scale renewable energy projects. These include regulatory risks, market fluctuations, rising investment costs, and technological changes that can affect the cost-effectiveness and feasibility of the project. It is important for companies to anticipate and prepare for these types of risks.

What technologies can be best combined, for example solar energy + geothermal energy, in an industrial or logistics environment?

The combination of solar and geothermal energy can be particularly useful in industrial environments where there is a high demand for heat and electricity. Geothermal systems help to cool and heat buildings, while solar panels provide the necessary electrical energy. The combined use of these two technologies reduces the use of fossil fuels and increases the sustainability of the system. Other good combinations include wind energy and storage systems for supplying energy to industrial parks.

FAQ – Frequently Asked Questions

What subsidies and tax breaks are available for large-scale renewable energy investments in Hungary?

In Hungary, the Green Investment Program offers a number of subsidies for large companies to promote the use of renewable energy sources and increase energy efficiency. Energy efficiency grants also provide opportunities for preferential financing.

How can the long-term operation and maintenance of projects be ensured?

Regular maintenance and operation are necessary for the long-term success of projects. The availability of on-site experts and the introduction of intelligent energy management systems contribute to continuous efficiency.

What risks should be considered in a large-scale project?

The most important risks include regulatory changes, market price fluctuations, and high investment costs. An appropriate risk management strategy and technological innovations can reduce the impact of these risks.

Which technologies can be best combined, for example solar energy + geothermal energy, in an industrial or logistics environment?

Solar energy combined with other renewable sources gives the best results in industrial or logistics environments. The solar-wind combination is particularly advantageous, as the low costs of solar energy are balanced by wind – for example, a built-in capacity of 70% solar and 30% wind can provide more stable production. In addition, combining solar and geothermal energy can also be effective, as solar panels cover the electricity demand, while geothermal systems can contribute to heating and cooling buildings.

How can large companies achieve carbon neutrality?

To achieve carbon neutrality, companies need to use renewable energy sources, implement energy-saving measures, and focus on reducing carbon emissions. By increasing energy independence and using green technologies, sustainable operational goals can be achieved in the long term.