Welcome to TECASOL

What We DoWho We Are

What We Do

TECASOL’s headquarters are based in Guipuzkoa, along with its other network of technical and commercial offices, as well as agents throughout Spain. This allows for technical and customer service across sectors and the country in its totality.

TECASOL has more than 5 years of design, sales, installation and development experience across all technologies that one would classify as cleantech or renewables.

TECASOL’s current activities in the Spanish market are focused on:

  • Solar projects with distribution level grid interconnection upto 5MW/DC
  • Solar net metering projects for the commercial industrial sector as well as agricultural and other applicable market verticals
  • Solar net metering projects for the residential sector
  • Solar equipment distribution, installation and maintenance
  • Solar net metering and off grid systems with energy storage

Who We Are

TECASOL was founded in 2014 and is based in Elgoibar, Spain. TECASOL has been a local industry leader in the residential and commercial/industrial solar thermal and photovoltaic space, partnering with experienced solar installers and conducting sales and marketing efforts and acting as the general contractor in house. The company has also acted as a distributor for innovative products in the solar and water treatment space enabling them to enter new markets using TECASOL as a local consultant on product certifications as well as market entry approach.

Recently the company has taken a strategic shift towards working with developers, investors and EPC contractors to develop larger projects that sell electricity to commercial / industrial and municipal off- takers. The Company plans to maximize returns via a diverse portfolio of projects across multiple leading solar markets.

In the past TECASOL has developed, constructed and financed many on and off grid C&I and residential installations. Today TECASOL is performing its own development, as well as development as a service, procurement and arranging investment and financing for project sizes usually in the 500kW – 5MW range respectively.


Univergy Solar


Tecasol has partnered with Univergy; A group of Spanish-Japanese origin, whose areas of experience and expertise are focused on the renewable energy sector, with services and extensive experience in the development, construction and operation of photovoltaic solar energy projects, as well as in multiple other applications, including residential, industrial and agricultural.

The company started its activity in 2012, establishing its main headquarters in Tokyo and Madrid. Since its inception, the group has experienced significant growth and has positioned itself as a global developer of sustainable projects, establishing offices in countries around the world, with a commercial presence on all continents.

So far, the group has business activity and its own offices in Spain (Madrid, Albacete, Palencia, Seville, Basque Country, Mallorca, Las Palmas, Fuerteventura, Coruña), France, the Netherlands, Italy, Germany and the United Kingdom. As well as in Asia it is present in countries such as Japan, South Korea, Vietnam, Taiwan, Indonesia, Bangladesh and India. In Latin America, it has offices in Colombia, Mexico, Argentina, Peru, Bolivia and Panama. Across these countries in which it has developed a project portfolio of more than 2.6 GW in total.

In Japan alone, Univergy has a portfolio of photovoltaic projects exceeding 1 GW, actively participating in the development and implementation of various projects carried out by other companies.

Univergy is also currently active in business development in the United States, Australia, Zambia, Zimbabwe, Togo, Botswana, Nigeria, Namibia, Paraguay, Puerto Rico, Dominican Republic, Dubai, and Sri-Lanka.

To learn more, visit http://www.Univergy.com

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Founded in 2011, Seraphim has registered impressive achievements in a short time, earning Tier-1 distinction from BNEF, Top Performer from DNV GL, and loyalty from demanding customers around the world. With an installed base of over 6GW in over 40 countries, Seraphim provides global customers with high-quality products and professional services.

We are very happy to partner with  TECASOL, a professional and esteemed solar industry player in Spain. We believe altogether we could bring Spanish and European customers industry-leading Seraphim modules and smart clean energy solutions. The spanish market is the most mature PV market, and it needs the most professional product and service suppliers to get its needs satisfied. 

Seraphim produces a wide variety of modules from the extremely beautiful and high-efficiency shingled-cell Eclipse series, innovative less mismatch and light-weight bifacial half-cell Blade series, smart Seraphim MX series installed with string-level optimizers, to dual-glass and other standard modules to meet customers’ diversified needs.

Seraphim Eclipse series modules are the first high efficiency modules that use shingeld-cell technology certicified by TUV SUD in the world. With an innovative overall busbar-free design, the active working area is enlarged, so it could generate 28% more electricity than standard ones, and its module efficiency reaches 21.1%.

Seraphim`s new Blade Bifacial series combines high-efficiency bifacial technology with proven half-cell technology, using incidental light from both the front and rear side of each cell. Yields up to 30% more energy from back side power generation, depending on the albedo/reflectivity of each individual project site.

To learn more, visit www.seraphim-energy.com

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Contact Us

Please, do not hesitate to contact us if you have any queries, problems or suggestions. You can do this by sending the form in this section or by contacting us by any of the methods given below.

    Pursuant to the provisions of Law 15/1999, of December 13, on Protection of Personal Data, we inform you that your data will be included in a file under the responsibility of TECNICAS DE AGUA Y DEL SOL SL in order to answer your queries.

    You can exercise your rights of access, rectification, cancellation and opposition by writing to our address: Calle Bernardo Ezenarro 15, esc. 2-2º B, 20870 Elgoibar (Gipuzkoa) - SPAIN

    Unless we are informed otherwise, we understand that your data have not changed, and that you agree to notify any change and that we have your consent to process these.

    Furthermore, and pursuant to the provisions of Law 34/2002, of July 11, on Services of the Information Society and Electronic Commerce, Article 21, we also request your express consent to send publicity of our products or promotions that we feel may be of interest, either by email or by any other means of electronic

    Please note that you have the right to revoke your consent to receive commercial communications by sending an e-mail to the email address: a.azpiazu@tecasol.net

    Submitting this data implies acceptance of this clause.

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