The success of Nexus Energía with Namirial’s electronic signature

Discover how Nexus Energía digitalized its customer onboarding process with Namirial, achieving faster, more secure and sustainable electronic signatures across all brands and channels.

Nexus Energía is one of the leading independent energy companies in the Spanish market, specializing in the supply of electricity and natural gas, as well as the representation of renewable energy producers. The company operates in Spain, Germany, Portugal, and Mexico, and is a market leader in photovoltaic energy representation, with approximately 40% market share and nearly 18,000 solar plants represented.

Its strategy is built on two fundamental pillars:

  • 100% green energy, with a strong environmental commitment
  • Complete transparency in customer relations

In addition to its B2B and public administration segments, Nexus Energía also operates The Yellow Energy, its 100% green retail brand for households, shops and small businesses, based on a highly automated and digital model.

+550

digitally signed contracts per month

~5,000

paper pages saved monthly

7

integrated group brands

The Challenge

Nexus Energía was seeking an electronic signature process that would eliminate paper, reduce inefficiencies, and maintain its personalised service model, ensuring a seamless experience both on the web and from its internal CRM.

“We needed an integrated, customer-oriented digital signature to ensure fast and efficient registration from any platform, guaranteeing digital validation of the end customer.”

— Alberto De Alvarado Noriega, Director of Corporate Marketing at Nexus Energía

The Solution

After analysing different solutions, Nexus Energía chose Namirial for its combination of legal robustness, ease of use and integration capabilities.

The solution stood out for its legal robustness, ensuring that each customer can view and understand exactly what they are signing, as well as collecting all the necessary evidence to verify their identity. This has allowed us to have an electronic signature that is not only equivalent to a handwritten signature, but even more complete and secure.

Key aspects of the project:

  • Fast and efficient integration via REST API: aligned with internal processes.
  • Remote signature with double validation: email + OTP – One Time Password – for maximum security.
  • Simple and smooth experience: for internal users and end customers.
  • Legal guarantee and full traceability: reinforcing transparency and trust.

“We were looking for a solution that could be natively integrated into our systems and offer a simple and secure signing experience for the end customer. With Namirial, we achieved a streamlined process with full traceability and legal guarantees, which also adapts to any channel and device. The technical collaboration was smooth from the outset, allowing us to accelerate internal adoption and ensure a consistent digital experience across all our brands.”

— Alberto De Alvarado Noriega, Director of Corporate Marketing at Nexus Energía

The Results

The result was a robust, agile digital signature system adapted to all devices (PC, tablet, and smartphone), reinforcing the energy group’s digital model.

Thanks to Namirial, Nexus Energía has obtained a more efficient, sustainable onboarding process with a cross-cutting impact on the business.

“The integration has been a success. The platform provides cross-functional services to all the group’s brands and is a very important differentiating factor.”

— Alberto De Alvarado Noriega, Director of Corporate Marketing at Nexus Energía


Disclaimer: this success story was originally produced by a former group company. It is now presented on the Namirial website for archival and informational purposes. The results, figures, branding, and product references reflect the customer experience at the time of original publication and may no longer represent current offerings or outcomes.

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