In recent years, the term “macro-plant” has become firmly embedded in the public debate on #Biomethane in Spain. However, it is worth making a technical and proportional reflection on the use of this concept which, when used indiscriminately, generates a counterproductive media alarmism for the energy transition that is so necessary in the current geopolitical context.

Energy independence also defines the so-called ecological transition, when it is primarily an energy and industrial one.It is not enough to develop biomethane, renewables, or decarbonization solutions: how we talk about them also matters, within a modelof society that many apparently wish to be regressive.

The problem of imprecise language

According to the dictionary, the prefix “macro” implies exceptionality or disproportionate size. In common Spanish usage, “macro” describes something extraordinarily large, massive, or outside the usual scale.

The reality is that there is currently no regulatory, energy, or environmental definition in Spain or the European Union that officially classifies a biomethane facility as a “macro-plant”.

The propagandistic origin of alarmist language

In the debate on energy transition, many expressions of alarm do not arise from technical analysis, but from a highly crafted, self-serving, and intensely negative communication strategy.

Negative communication generates greater recall than positive communication. This is a scientifically proven fact known as negativity bias. People remember negative messages, such as criticism, more than praise, and bad news more than good news; a negative experience generates more emotional impact than a positive one. It is a proven and evolutionary fact. It is a biological defense derived from human evolution, but in communication, it is used to generate opposition by clearly, easily, and skillfully manipulating the recipients of those communications.

Terms such as “macro-plant”, “energy lobby”, “energy colonization”, “greenwashing”, or “industry disguised as ecology” function as labels designed to trigger rejection before an informed conversation can take place about the project, its real impact, its regulation, or its benefits. To counteract such communication, positive communication would need to be at least 10 times greater—or 10 people, media outlets, or positive messages to at least break even in communication terms. Faced with such negative messages, it is very difficult for anyone to form a balanced, reasoned, and non-manipulated opinion by simply presenting the scientific and technical reality—which is inherently complex for unskilled individuals—of the projects or plants.

Applied to biomethane and bioenergy, these concepts shift the focus: instead of talking about waste management, emissions reduction, circular economy, locally sourced digestate, organic fertilization, fossil gas substitution, replacement of polluting fertilizers, or rural development, the debate becomes trapped in an emotional framework of threat and imposition.

The problem is not that legitimate doubts or concerns exist; they must exist and must be answered with transparency. The problem arises when the language used does not seek to explain, but to condition public—and why not say it, political—perception.

Therefore, the first step to improving the conversation about biomethane is to identify these narrative frameworks and call them what they are:“framing” tools, not technical or regulatory categories. The way we name a solution conditions how society understands it, how the media reports it, and how the administration dares—or does not dare—to promote it. Today, it would never occur to anyone that a wastewater treatment plant, of which there are thousands, is an inadvisable facility, or that waste should not be treated; these are comparable examples that communicators opposed to development take care to omit.

European context: Spain in perspective

According to data from the European Biogas Association (EBA) and Sedigas, the differences between European national models for biogas and biomethane development are significant, primarily marked by the context of each country’s strategic plan and its regulatory and incentive development.

To provide a reference for plants under development, in Spain, Nedgia in its 2025 sustainability report mentions an estimated average of 60 GWh/year across 98 signed projects. This is a far cry from the image of ‘macro-infrastructure‘ with which the sector is often labeled.

Comparison by organic waste management

In countries like Denmark, plants managing 400,000 tons/year are considered standard and exemplary facilities in the agro-industrial sector, perfectly integrated into the rural territory. In some cases, they exceed one million tons annually. To contextualize these figures: A 100 GWh/year plant is approximately equivalent to the heating consumption of 10,000 homes and processes between 150,000-200,000 tons of organic waste annually. This wide range arises from the disparity in waste production available in each area.

The European Union identifies Spain as the third country in Europe with the greatest potential for Biomethane production, but with several intrinsic complexities—dispersion, low population density, limited gasification of the country, and reduced agricultural productivity.

Success stories in territorial integration

In Denmark, 130-140 GWh/year plants operate with full social acceptance in rural municipalities, generating local employment and efficiently managing livestock waste. In Germany, 50-60 GWh/year facilities have been part of the agro-industrial landscape for decades without significant territorial conflicts. According to the Sedigas report, by the end of 2025, there were more than 1,500 Biomethane plants across Europe injecting into the grid.

Why does integration work in these countries?

• Coordinated territorial planning and direct support policies

• Internal market stability

• Social participation with a real vision of environmental protection

• Tangible local economic benefits, circularity in resource use, and proper waste management

The local benefits of biomethane

A well-dimensioned facility brings to the territory:

• Sustainable management of local organic waste

• Direct and indirect employment (operation, maintenance, logistics)

• Income for livestock farmers and agriculturists through waste recovery

• High-quality digestate as organic or bio-fertilizer

• Emissions reduction vs. conventional waste management

• Alignment with regulation and the new EU Strategy 27 for the CAP, for energy and food security

Objective criteria vs. media alarmism

The numbers analyzed are not what is important; what is relevant is to point out that the dimension of a plant cannot be analyzed in isolation. The criterion should not be size but the “viability” of the plant — and that it be consistent with the agro-livestock by-products that the area already generates. Relevant technical criteria include:

✔ Real availability of agro-livestock and agro-industrial waste

✔ National regulatory and remuneration framework

✔ Productive density of the territory

✔ Optimized logistical collection radii

✔ Agricultural recovery of the produced digestate

✔ Connection to existing gas infrastructures

✔ Global environmental balance of the project

The cost of media alarmism

Many facilities that are publicly labeled as “macro-plants” in Spain would fall within standard operating parameters in mature European markets, coexisting perfectly with the populations where they are located. The indiscriminate use of the term “macro-plant” generates:

• Unjustified social rejection towards technically viable projects

• Paralysis of investments in the rural circular economy

• Loss of opportunities for sustainable waste management

• Delay in decarbonization targets

To the alarmism of detractors, it should be added that the Court of Justice of the European Union, in 2024, condemned Spain for failing to comply with nitrate regulations. The ruling concludes that Spain did not adopt sufficient measures to prevent nitrate pollution from agriculture and livestock in several autonomous communities, including: Aragon, Castile and León, Castile-La Mancha, Extremadura, Murcia, Madrid, the Balearic Islands, and the Valencian Community. Although it has not yet set a specific fine, it opens the door to a second sanctioning procedure with million-euro coercive fines if Spain does not correct the situation and, consequently, regional governments will begin to generate local sanctions for those who maintain bad practices in the rural world.

Regulatory and judicial pressure on slurry and nitrate management is already structural in Spain and the EU. This is driving:

• expansion of Nitrate Vulnerable Zones (NVZ)

• greater agronomic restrictions

• digital control of fertilization

• traceability of manure
• recovery solutions such as biomethane and treated digestate.

In this context, biomethane represents a strategic opportunity to transform an environmental problem into an energy and agronomic resource. Biomethane plants allow for the controlled management of agro-livestock waste, reducing emissions, minimizing pollution risks, and locally generating stabilized organic fertilizers, in addition to producing local renewable gas and reducing dependence on fossil fuels.

The question is no longer whether Spain needs to act on the nitrate problem, but whether it wants to do so solely through prohibition and penalties, or also through innovation, the circular economy, and rural development.

The need to speak accurately

The energy transition, and especially the Biomethane sector, needs public debate and social participation, but also technical precision, proportionality in language, and the ability to differentiate between well-designed projects and those that are not, between detractors and alarmists without a substantive basis for their claims and promoters, operators, or the administration that evaluates projects from objective, technical, and legal perspectives.

The relevant question should not only be the absolute size of a facility, but whether the project is correctly dimensioned for its territory, has adequate environmental guarantees, and generates a reasonable balance between impact and value provided. Reducing the entire biomethane debate to the “macro-plant” concept simplifies a much more complex industrial, agricultural, and energy reality.

Independence from fossil resources and the decarbonization of the Spanish production system (including agriculture and livestock, which today are treated as diffuse sectors and are not reducing their emissions of CO2, Ammonia, or Methane) requires technical rigor and objectification. Let’s speak accurately about specific projects, not alarmist labels.

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