# Destia — Transport and energy infrastructure delivery and maintenance > Destia Oy is a Finnish infrastructure and construction-services company, part of Colas. It designs, builds and maintains roads, railways, electricity networks and other public infrastructure. Energy work includes defined grid and equipment packages; the company should be described as an infrastructure contractor rather than as a general power-plant EPC provider. - **Legal name:** Destia Oy - **Headquarters:** Registered domicile and head office: Helsinki, Finland - **Founded:** 2008 - **Official website:** [Destia](https://destia.fi/en/) - **URL:** https://voltformer.com/epc-contractors/destia - **Markdown:** https://voltformer.com/epc-contractors/destia.md - **JSON:** https://voltformer.com/epc-contractors/destia.json ## CEO and leadership profile ### Heikki Haasmaa Chief Executive Officer He has been CEO of Destia since 1 March 2026, following the appointment announced in January 2026. He was previously CEO of Sitowise and held leadership roles in KONE’s maintenance business. He holds an MSc in Technology. - **In role since:** 2026-03-01 - **Sources checked:** 2026-10-11 - **Profile:** [Heikki Haasmaa](https://voltformer.com/ceo/heikki-haasmaa) [Destia · Current management](https://destia.fi/en/about-us/management-team/) · [Destia · 2026 CEO appointment announcement](https://destia.fi/en/release/heikki-haasmaa-appointed-as-ceo-of-destia-tero-kiviniemi-takes-on-northern-europe-leadership-role-within-the-colas-group) · [Destia · 2025 sustainability report: actual CEO transition](https://destia.fi/app/uploads/2026/03/destia-sustainability-report-2025.pdf) ## How to select an EPC contractor EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope. ## Directory methodology This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting. ## What should an EPC enquiry include? Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees. ## Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services. ## Engineering specializations - Electricity networks and substations - Rail, road and urban infrastructure - Energy equipment and civil works packages - Rail, tramway and road infrastructure ## Declared capabilities - **Basic and detailed engineering:** Listed capability; confirm project-specific scope - **Procurement and supply:** Not listed - **Civil and structural construction:** Listed capability; confirm project-specific scope - **Testing and commissioning:** Listed capability; confirm project-specific scope - **High-voltage substation EPC:** Not listed - **Transmission lines:** Listed capability; confirm project-specific scope - **Turnkey power plant EPC:** Not listed - **Grid interconnection:** Listed capability; confirm project-specific scope ## Representative projects ### Jylkkä synchronous condenser - **Capacity / scope:** Destia delivered implementation from design and civil works through installation, testing and commissioning; GE supplied the generator and flywheel system. - **Country:** Finland | **Client:** Fingrid - **Description:** The grid-support asset was commissioned in 2025. The synchronous condenser stabilizes voltage and provides inertia; it does not generate electricity as a power plant. - **Technologies:** Synchronous condenser, Grid voltage and inertia support - **Original source:** [https://destia.fi/en/article/the-synchronous-condenser-enables-the-growth-of-wind-power-production/](https://destia.fi/en/article/the-synchronous-condenser-enables-the-growth-of-wind-power-production/) ### Yllikkälä Power Reserve 2 battery storage - **Capacity / scope:** Infrastructure and construction package for a 56.6 MW / 112.9 MWh battery system; commissioned in the first half of 2025. - **Country:** Finland | **Client:** Neoen - **Description:** Destia worked on infrastructure for Neoen’s battery storage in Lappeenranta. The reported MW and MWh are asset ratings, not a Destia generation capacity. - **Technologies:** Battery energy storage, Grid balancing - **Original source:** [https://destia.fi/en/article/the-largest-battery-storage-in-the-nordics-was-built-with-precise-teamwork/](https://destia.fi/en/article/the-largest-battery-storage-in-the-nordics-was-built-with-precise-teamwork/) ### Järvilinja 400/110 kV transmission line - **Capacity / scope:** Construction of an approximately 82 km 400/110 kV transmission line in North Savo alongside the existing route; completion was forecast for end-2026. - **Country:** Finland | **Client:** Fingrid - **Description:** The project strengthens north-south transfer capacity and enables connection of new renewable generation and industrial loads. It is a transmission-line construction contract, not a turnkey power station. - **Technologies:** 400/110 kV transmission line, Grid connection capacity - **Original source:** [https://destia.fi/en/release/destia-to-build-a-new-jarvilinja-power-line-for-fingrid-in-north-savo/](https://destia.fi/en/release/destia-to-build-a-new-jarvilinja-power-line-for-fingrid-in-north-savo/) ## Technical services - **Grid and energy infrastructure:** Design, civil construction, installation and commissioning for defined network and grid-support assets; equipment supply may be by partners. - **Infrastructure lifecycle services:** Maintains and renews transport infrastructure, including railway, road, lighting and urban systems. - **Power substations and grid infrastructure:** Turnkey delivery of selected high-voltage substations and other electrical infrastructure; scope is defined per customer contract. - **Railway systems and civil works:** Builds and renews railway and light-rail infrastructure, including track-related civil and technical works. ## Standards and certifications ## Official contacts - **Address:** Registered domicile and head office: Helsinki, Finland - **Official website:** https://destia.fi/en/contact-us/ ## Reference statistics - **Employees:** About 1,900 - **Owner:** Colas (Bouygues Group) - **Parent group:** Colas Group ## Company and energy news - [West Helsinki light-rail project begins implementation](https://voltformer.com/news/destia-2026-06-04-lansiratikat-hanke-on-kaynnistynyt-helsingissa) — 2026-06-04 · [Markdown](https://voltformer.com/news/destia-2026-06-04-lansiratikat-hanke-on-kaynnistynyt-helsingissa.md) - [Destia signs EUR 200 million second phase order for Vantaa light rail](https://voltformer.com/news/destia-2026-05-07-destialle-200-miljoonan-sopimus-vantaan-ratikan-toisesta-osatilauksesta) — 2026-05-07 · [Markdown](https://voltformer.com/news/destia-2026-05-07-destialle-200-miljoonan-sopimus-vantaan-ratikan-toisesta-osatilauksesta.md) - [Destia to deliver three substation contracts for Fingrid](https://voltformer.com/news/destia-2026-04-29-destia-toteuttaa-kolme-keskeista-sahkoasemaurakkaa-fingridille) — 2026-04-29 · [Markdown](https://voltformer.com/news/destia-2026-04-29-destia-toteuttaa-kolme-keskeista-sahkoasemaurakkaa-fingridille.md) - [Destia reports record growth in 2025 and focus on sustainable infrastructure](https://voltformer.com/news/destia-2026-03-17-destia-experienced-record-growth-and-strengthened-sustainable-infrastructure-construction-in-2025) — 2026-03-17 · [Markdown](https://voltformer.com/news/destia-2026-03-17-destia-experienced-record-growth-and-strengthened-sustainable-infrastructure-construction-in-2025.md) - [Destia explains Jylkkä synchronous condenser’s role in grid stability](https://voltformer.com/news/destia-2026-03-04-the-synchronous-condenser-enables-the-growth-of-wind-power-production) — 2026-03-04 · [Markdown](https://voltformer.com/news/destia-2026-03-04-the-synchronous-condenser-enables-the-growth-of-wind-power-production.md) - [Yllikkälä Power Reserve 2 battery storage is completed](https://voltformer.com/news/destia-2026-03-04-the-largest-battery-storage-in-the-nordics-was-built-with-precise-teamwork) — 2026-03-04 · [Markdown](https://voltformer.com/news/destia-2026-03-04-the-largest-battery-storage-in-the-nordics-was-built-with-precise-teamwork.md) - [Destia appoints Heikki Haasmaa as CEO](https://voltformer.com/news/destia-2026-01-15-heikki-haasmaa-appointed-as-ceo-of-destia-tero-kiviniemi-takes-on-northern-europe-leadership-role-within-the-colas-group) — 2026-01-15 · [Markdown](https://voltformer.com/news/destia-2026-01-15-heikki-haasmaa-appointed-as-ceo-of-destia-tero-kiviniemi-takes-on-northern-europe-leadership-role-within-the-colas-group.md) ## Other languages - [en](https://voltformer.com/epc-contractors/destia) - [tr](https://voltformer.com/tr/epc-contractors/destia) - [de](https://voltformer.com/de/epc-contractors/destia) - [ru](https://voltformer.com/ru/epc-contractors/destia) - [es](https://voltformer.com/es/epc-contractors/destia) - [ar](https://voltformer.com/ar/epc-contractors/destia) - [it](https://voltformer.com/it/epc-contractors/destia) - [pt](https://voltformer.com/pt/epc-contractors/destia) [EPC contractors](https://voltformer.com/epc-contractors.md) · [Voltformer catalog](https://voltformer.com/catalog)