We provide independent advice to ensure sustainable solutions for our client’s needs


Technical Advisory and Consulting

With our technical advisory and consulting services, we support our clients – developers, owners, investors, and other parties involved – across all the stages of their renewable energy assets. We contribute our expertise and technical knowledge to greenfield projects, during the construction, commissioning, and operation phases, and to project transactions and project financing. Our highly specialized renewable energy consultants provide independent and tailor-made advice to meet our client’s needs to ensure the maximum profitability and an adequate risk management.  

We pursue excellence by ensuring quality and the continuous improvement of our activities and processes, that are accredited in Spain by ISO 9001, the world’s most popular standard for quality management, that certifies our high-standard services and solutions.

Full range of our technical advisory and consulting services are described below: 


  • Site assessments and site adequacy
  • Solar resource assessments and energy yield assessments
  • Feasibility assessments
  • High-level installed capacity evaluation and optimization
  • Preliminary grid connection review
  • Review of technical permitting

Project transactions and project financing

Technical Due Diligence for project financing and transactions:

  • Site assessment and site adequacy
  • Technical design reviews and equipment / suppliers reviews
  • Technical contractual reviews, inclusive of PPA, EPC, and O&M agreements
  • Solar resource and energy yield assessment
  • Project schedule review
  • Grid connection review
  • Review of technical permitting
  • CAPEX & OPEX estimation
  • Analysis of the project according to the Equator Principles
  • Loan review according to the Green Loan Principles

Construction and operation

Construction and commissioning:

  • EPC milestones verification
  • Monitoring of construction progress
  • Verification and compliance of PAC/FAC and COD


  • Review of the performance/operation of the plant, analysis of the main incidents occurred, and review of the solutions implemented to mitigate and solve them.
  • Adjustments and estimation of yield based on historical production.
  • Historical OPEX and modeled OPEX review
  • Verification of technical conditions under the EPC, O&M and PPA agreements.

Highlighted projects

Portfolio of 21 PV projects for Natixis CIB and Santander CIB

Country: Spain

Capacity: 1231 MWp

Service(s): Technical Advisory

Client(s): Natixis CIB & Santander CIB

Enertis Applus+ acted as Technical Advisor for Natixis CIB and Santander CIB in financing a portfolio of 21 solar PV plants in Spain with a total capacity of 1,231 MWp.

Grenergy Renovables’ Valkyria transaction

Country: Spain

Capacity: 297 MW

Service(s): Technical Advisory

Client(s): Grenergy Renovables

Enertis Applus+ acted as Technical Advisor for Grenergy Renovables in the sale of two solar PV plants totaling 297 MW in capacity and located in Spain. As part of our services, we carried out a Vendor’s Technical Due Diligence within the Valkyria transaction, in which Grenergy Renovables reached an agreement to sell these plants to Allianz Capital Partners for over €270 million, on behalf of Allianz insurance companies and further institutional investors.

Some of our clients

Get in touch for further information

Jorge Álvarez Vitores

Head of Consultancy