Our services for


We work to improve your performance and profitability through technological optimisation, asset management and the addition of energy storage systems.

Areas of knowledge


Services portfolio


Services for PV development transactions

One Solar is present in all phases of PV projects, from the start of project development to the acquisition by the investor or IPP and its long-term operation.

We connect the different actors in the market and facilitate the connection between the developer or promoter of the projects and potential buyers. 

We have extensive experience in the processes of acquisition, development and management of assets with and for investors, so that we facilitate the processes during the development of the assets and that the investment transactions are made according to the requirements and needs of the investor in terms of technical, financial and legal Due Diligence.

Technological optimisation of PV assets

We contribute our knowledge in photovoltaic technology and help to define the technological map to optimise the generation assets and ensure the investor the lowest LCOE, thus improving the return on the asset.

We work closely with photovoltaic equipment suppliers to get the most out of their equipment in generation assets, obtaining superior performance ratios certifiable in independent technical audits.


Despite the maturity of photovoltaic technology, we believe that at a technological level each plant has a lot of room for optimisation in technology selection, plant design and equipment selection. The vast majority of photovoltaic projects are still developed with standardised designs that do not prioritise LCOE optimisation, so we integrate ourselves into any phase of the project to reorientate the project and avoid restrictions and/or corrections in already authorised projects.

Our goal is for our clients’ assets to capture their full potential and thus achieve maximum value.

Development of PV projects

We develop our own and third-party solar generation projects and fully supervise the development of the assets of investors who do not have their own resources. We work throughout the process to ensure that the assets reach "Ready to Build" status, with optimal design and technology selection.

We are passionate about this sector and we work to find projects that fit in with the territory, that have a positive impact on it and that provide value to society as a whole.

We have been in the sector for more than 20 years and do not see this business area with a speculative vision, but rather as an opportunity to contribute our grain of sand in the process of energy transition, bringing benefits to the territory and structuring sustainable investments.

Energy storage

Energy storage will be a key factor in the process of energy transition, providing the network with more resources to absorb the entry of a large volume of generation through unmanageable renewable technologies.

The possibility of servicing the electricity system with energy storage systems is already feasible in markets such as the United Kingdom, while in others regulation is being defined to make this possible in a short time frame.

The One Solar team has the knowledge and experience to provide regulatory advice, financial model analysis, project design, whether storage or hybrid with solar generation, the structuring of RFQ processes and their implementation.

Our clients


The main actors in the solar sector involved in the different phases of photovoltaic generation projects, from development to execution and operation of the plants. One Solar can act in specific areas to give added value to its services.

PV project developers
EPC companies
Manufacturers of main components
Engineering and technical offices