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About us

Changing the
game of solar

Sun Investment Group (SIG) is a development and investment management company, focused on delivering steady quality in the rapidly evolving solar energy industry.

Our reach

Solar opportunities
are boundless

In-house experts
132 MW
Constructed in the United Kingdom, Poland, Lithuania
5 offices
2 in Poland, 2 in Lithuania and 1 in Italy
Our focus

We focus on the following key markets

  • Poland
  • Lithuania
  • Spain
  • Italy

And we have the following core business divisions:

  • Utility Scale project development & operation
  • C&I PPA project development & operation
  • EPCm (construction management) for in-house projects only

Together SIG and its companies form one of the most dynamic company groups dedicated to solar PV technology in Europe, led by the founders with over 10 years of experience in the market.

Business model

  • Utility
  • Commercial


Development, greenfield development and design, securing connections, permitting and PPA greenfield development.


Structuring and sourcing project finance.


EPC management, using SIG's experience and warranty strength with trusted networks of contractors.

Project development

Feasibility study – technical, economic and legal analysis; development.

Design and construction

Turnkey solution (EPC) – formalities, design and construction.


Tailored financial solutions.

Operation and Maintenance (O&M)

Optimisation, 24/7 monitoring, maintenance, insurance and guarantees.
The opportunity
The approach
The gain
Our philosophy

The opportunity

Our focus is on plants in regions whose political stability, legal framework, and existing energy and environmental policies guarantee a stable source of revenue in the long term.





Dynamic, ambitious, experienced

Established in 2017, SIG team currently unites over a 100 of in-house international experts with a broad and proven experience in diverse areas of the solar energy business, particularly in the project development, financial structuring, legal, and EPCm. The team holds a track record of 132MW PV projects development, construction and commissioning.

Deividas Varabauskas

CEO, Managing Partner

Founder of SIG, working in the solar sector since 2007. Deividas is in charge of overseeing overall company progress and maintaining accelerated growth. His main focus is on investment product creation, where the detailed understanding of project risks and the needs of investors are fundamental.

Andrius Terskovas

CBDO, Managing Partner

In the solar business since 2014, Andrius is responsible for the business development, operational setup, and optimisation of internal business processes at SIG. He holds a track record of managing the €30 million business of a Fortune 100 company and has graduated from Aarhus University with an MSc in Engineering.

Management team

Krzysztof Lawrywjaniec

Head of PPA

Krzysztof has bold experience in managerial positions in the energy industry working at reputable companies operating on the Polish and foreign markets. For years, he has been associated with the area of renewable energy sources and energy efficiency improvement, specializing primarily in advanced formulas for projects implementation such as PPA and ESCO.

Andrzej Pryczynicz

Chief Financial Officer

Graduate of Warsaw School Economics Andrzej and has over 10 years of experience within the finance area. Prior to SIG, Andrzej worked at Big 4 companies as well as brokerage houses and leading boutique advisory firms where he brought to life numerous projects in the filed of corporate finance advisory. At SIG he is responsible for managing all strategic financial matters within the company.

Milosz Laska

Head of People Operations

Psychologist by education, Milosz has a bold experience in people operations with a strong background in HR consultancy. His client portfolio ranges from international corporations, Big 4 companies to software houses and start-ups. Previously to SIG, Milosz was responsible for the APAC/MENA/USA CEE regions. Now he leads people operations in Central Europe and the Baltics focusing on HR strategy and development in business and company culture.

Sabina Szumigala

Head of Construction Poland

Sabina holds a Msc degree in Engineering and has a strong engineering background in managing large portfolios of utility scale PV projects. Prior to Sun Investment Group, Sabina specialized in M&A, development and technical advisory. At SIG, her main focus is on processes of construction of PV farms while also managing SIG’s biggest solar projects and projects acquisition.

Andrius Džiaugys

Managing Director, C&I Baltics

With PhD in Physics, deep understanding of solar technologies and over 10 years of B2B sales experience, Andrius leads C&I activities in Baltic region. Long-term strategic relationship building is his main focus at SIG.

Giuseppe D‘Elia

Development Director Italy

With over 13 years of experience in the PV sector and extensive knowledge of the Italian market, Giuseppe managed start up and business area reorganisation of Italian PV companies on behalf of international operators (Chinese, Indian, French, US). His focus was on defining strategies and processes, selecting and managing advisors, maintaining relationships with partners and stakeholders. At SIG, he is in charge of the entire chain of PV utility scale system project development in Italy: from initial origination phase to obtaining authorization permits and construction management with the selected EPC partners.


Stronger together

SIG is part of a company group that unites the most ambitious and experienced solar experts in Europe.

Eternia Solar

Eternia Solar is one of the biggest solar engineering, procurement, and construction providers in the Baltics. The company works closely with clients from the manufacturing, logistics, retail, real estate, agriculture, and the private sectors to guarantee long-term effectiveness and efficient operation.

Visit website

Nogrid is a B2C solar solutions provider with a track record of more than 500 projects in the Baltics. The company partners with the leading PV technology manufacturers to bring cutting edge solutions for its customers.

Visit website
Saulės Bendruomenė

Saulės Bendruomenė is a group’s joint project offering remote solar solutions in Lithuania. It allows energy consumers cover their electricity costs with the power produced by Saulės Bendruomenė‘s power plants.

Visit website

Get in touch

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