Moving enormous data volumes using only a fraction of the electricity needed a decade ago
En una década en que el mundo digital no ha dejado de expandirse, Telefónica ha logrado lo que muchos consideraban incompatible: multiplicar por doce el tráfico de datos en sus redes mientras reduce un 12% el consumo eléctrico. Este logro, sustentado en fibra óptica, redes 5G e inteligencia artificial, no es solo un hito técnico, sino una respuesta práctica a una de las grandes preguntas de nuestro tiempo: ¿puede el crecimiento económico desacoplarse del deterioro ambiental? La compañía española no solo sugiere que sí, sino que lo está midiendo, certificando y convirtiendo en estrategia de negocio.
- La tensión de fondo es real: cada clic, cada videollamada, cada archivo en la nube consume energía, y el apetito digital global no da señales de moderarse.
- La paradoja que Telefónica presenta sacude las asunciones habituales: más tráfico no ha significado más emisiones, sino todo lo contrario, gracias a una eficiencia que ha mejorado un 92% desde 2015.
- La compañía despliega tres palancas concretas —fibra óptica, 5G e IA— para optimizar el consumo en tiempo real, apagando lo que no se necesita y ajustando sistemas de refrigeración y energía de respaldo de forma autónoma.
- Las emisiones operativas directas han caído un 91% desde 2015, superando los propios objetivos de la empresa, y las de la cadena de suministro se han reducido casi a la mitad en la misma década.
- El horizonte marcado es ambicioso: alcanzar el 95% de eficiencia energética en 2030 y las emisiones netas cero en 2040, diez años antes de lo que exige el Acuerdo de París.
Telefónica movió el año pasado doce veces más datos que hace una década. Y, sin embargo, consumió un 12% menos de electricidad para hacerlo. Esa paradoja —más tráfico, menos energía— es la demostración práctica de que el crecimiento digital y la responsabilidad climática no tienen por qué ir en direcciones opuestas.
Los números son contundentes. En 2025, las redes de la compañía consumieron 29 megavatios-hora por cada petabyte de datos transmitidos. En 2015, esa misma cantidad de datos habría requerido aproximadamente cincuenta veces más energía. Una mejora de eficiencia del 92% en diez años que, según Maya Ormazabal, directora global de sostenibilidad, valida una apuesta estratégica tomada años atrás.
Tres palancas explican el resultado. La fibra óptica es un 85% más eficiente que el cobre al que sustituyó. Las redes 5G consumen un 90% menos que las de cuarta generación. Y la inteligencia artificial, desplegada a través del programa de Redes Autónomas de Telefónica, optimiza continuamente el funcionamiento de los sistemas: reduce el consumo en horas de baja demanda, ajusta la refrigeración y gestiona la iluminación y los equipos de respaldo de forma automática.
Más allá de la ingeniería, las emisiones operativas directas de la compañía han caído un 91% desde 2015, superando su propio objetivo del 90%. Si se incluye la cadena de suministro —fabricación de equipos, operaciones de proveedores—, la reducción alcanza el 49% en la última década. Estos avances se apoyan en energías renovables, proyectos de eficiencia, colaboración con proveedores e iniciativas de economía circular.
Ormazabal subraya que desacoplar crecimiento y emisiones no es solo virtud ambiental: reduce costes operativos, mitiga riesgos regulatorios y abre el acceso a mercados de capital sostenible. El próximo reto es llevar esa eficiencia del 92% al 95% antes de 2030, camino hacia las emisiones netas cero en 2040, una década por delante del calendario marcado por el Acuerdo de París.
Telefónica moved twelve times more data through its networks last year than it did a decade ago. Yet the company used 12 percent less electricity to do it. That paradox—more traffic, less energy—sits at the heart of what the Spanish telecom is trying to prove: that digital growth and climate responsibility don't have to pull in opposite directions.
The math is stark. In 2025, Telefónica's networks consumed 29 megawatt-hours of electricity for every petabyte of data that flowed through them. In 2015, that same amount of data would have required roughly fifty times more power. The company calls this a 92 percent efficiency gain over the decade. It's the kind of number that sounds abstract until you consider what it means in practice: the infrastructure that moves your video calls, your streaming services, your work emails—all the digital sinew of modern life—has become radically less hungry for electricity.
Maya Ormazabal, Telefónica's global sustainability director, frames it as a vindication of a specific bet the company made years ago. "We're able to move enormous volumes of data using only a fraction of the electricity we needed ten years ago," she said. The company's strategy hinged on three main levers. Fiber-optic cables are 85 percent more efficient than the copper infrastructure they replaced. Fifth-generation wireless networks consume 90 percent less power than fourth-generation systems. And artificial intelligence, deployed through what Telefónica calls its Autonomous Network Journey program, continuously optimizes how the company's systems run—automatically scaling down power consumption during off-peak hours, fine-tuning cooling systems, managing lighting and backup power equipment.
These gains matter beyond the engineering specs. Telefónica also cut its direct operational emissions by 91 percent since 2015, surpassing its own 90 percent target for this year. When you include the company's supply chain—the emissions embedded in equipment manufacturing, in supplier operations—the reduction reaches 49 percent over the past decade. The company achieved a 34 percent cut in supply-chain emissions since 2016. These reductions came through renewable energy procurement, efficiency projects, supplier collaboration, and circular economy initiatives.
The company's climate strategy is validated by the Science Based Targets initiative, meaning its goals align with limiting global warming to 1.5 degrees Celsius. Telefónica has committed to reaching net-zero emissions by 2040—a decade ahead of the Paris Agreement timeline. For twelve consecutive years, the company has held a spot on the Carbon Disclosure Project's A-list of climate leaders, a ranking that suggests sustainability and business competitiveness can coexist.
Ormazabal emphasizes that decoupling growth from emissions isn't just environmental virtue. It reduces operating costs, mitigates financial risks from climate policy shifts, strengthens network resilience, and opens doors to sustainable capital markets. "It's good for business and for the planet," she said. The company now faces a new target: pushing that 92 percent efficiency gain to 95 percent by 2030. The challenge ahead is steeper than the last decade's gains, but Telefónica has already demonstrated that moving more data while burning less fuel isn't a contradiction—it's an engineering problem with a solution.
Notable Quotes
We're able to move enormous volumes of data using only a fraction of the electricity we needed ten years ago.— Maya Ormazabal, Global Sustainability Director, Telefónica
Decoupling growth and emissions is good for the business and for the planet—it reduces costs, mitigates risks, and improves our access to sustainable capital.— Maya Ormazabal, Global Sustainability Director, Telefónica
The Hearth Conversation Another angle on the story
How does a company move twelve times more data while using less electricity? That seems to violate some basic law of physics.
It doesn't violate physics—it exploits better physics. Fiber and 5G are fundamentally more efficient technologies than what came before. But technology alone doesn't explain it. You also need the discipline to actually use that efficiency. That's where the AI comes in, constantly tuning the network so nothing wastes power.
So it's not just about replacing old equipment with new equipment?
No. Replacement is the foundation, but then you have to operate the thing intelligently. Telefónica automated its network management so that during quiet hours, systems scale down. Cooling systems don't run at full blast when they don't need to. It's the difference between owning a fuel-efficient car and actually driving it efficiently.
What does this mean for the company's bottom line?
Lower electricity bills are real savings. But the bigger play is access to capital. Investors increasingly care about climate risk. Being on the Carbon Disclosure Project's A-list for twelve years straight signals that you're not going to be stranded by energy policy changes. You're building resilience into your business model.
Is 95 percent by 2030 realistic, or is that aspirational?
They've already hit 92 percent. The next three percentage points will be harder—there's always a diminishing return. But they've proven they can do this at scale. The real test is whether other telecom companies follow, or whether Telefónica's efficiency becomes a competitive advantage.