# TechDocuments Oy

> TechDocuments Oy is a Finnish electrical engineering design office (sähkösuunnittelutoimisto) based in the Tampere region (Pirkanmaa), Finland. It designs and documents electrical systems for data centres, battery energy storage systems (BESS), solar PV plants, industrial sites and residential buildings, serving clients across Finland in Finnish and English.

TechDocuments Oy (Finnish Business ID / Y-tunnus 3136032-4) was founded on 14 May 2020. Registered office: Tampere. Postal address: Riihitontuntie 18 B 80, 02200 Espoo, Finland. Industry code TOL 71125 (electrical engineering design). Contact person and designer: Lauri Salonen. Clients deal directly with the designer ("human to human") and work is produced with modern CAD/electrical design software as digital documentation, taking into account the SFS 6000 standard series and network operator requirements.

## Contact
- Email: info@techdocuments.fi
- Phone: +358 40 964 4654 (Lauri Salonen)
- Contact page (FI): https://www.techdocuments.fi/yhteystiedot/
- Contact page (EN): https://www.techdocuments.fi/en/contact/
- LinkedIn (company): https://www.linkedin.com/company/techdocuments/
- LinkedIn (Lauri Salonen): https://www.linkedin.com/in/laurisalonenn

## Services
- [Data centre electrical design / Datakeskusten sähkösuunnittelu](https://www.techdocuments.fi/en/services/data-centres/): power distribution, critical power and UPS interfaces, standby generator interfaces, A/B feeds, rack power distribution, selectivity and short-circuit studies, single-line and switchboard diagrams. Finnish page: https://www.techdocuments.fi/palvelut/datakeskukset/
- [Battery energy storage (BESS) electrical design / Akkuvarastojen sähkösuunnittelu](https://www.techdocuments.fi/en/services/bess-energy-storage/): battery and inverter connections, protection and isolation, earthing, metering, auxiliary power, grid connection documents. Finnish page: https://www.techdocuments.fi/palvelut/energiavarastot-bess/
- [Solar PV electrical design and grid connection / Aurinkovoiman sähkösuunnittelu](https://www.techdocuments.fi/en/services/solar-pv/): rooftop to ground-mounted solar parks, inverter and DC-side design, protection, network operator connection documents, solar + battery integration. Finnish page: https://www.techdocuments.fi/palvelut/aurinkovoima/
- [All services / Palvelut](https://www.techdocuments.fi/en/services/): also residential electrical design (detached houses, villas, housing companies, EV charging, PV-readiness), industrial power distribution, documentation updates (as-is surveys, as-built drawings) and consulting. Finnish page: https://www.techdocuments.fi/palvelut/

## Service area and languages
- Tampere, Pirkanmaa region on site; documentation and design work remotely across Finland.
- Languages: Finnish (suomi) and English.
- Typical reply time: 1–2 working days. Quotes are given for an agreed scope before work starts (fixed price or hourly).

## Key pages
- [Home (FI)](https://www.techdocuments.fi/) · [Home (EN)](https://www.techdocuments.fi/en/)
- [Example projects (anonymised work types)](https://www.techdocuments.fi/en/projects/) · [Referenssit](https://www.techdocuments.fi/referenssit/)
- [About](https://www.techdocuments.fi/en/about/) · [Yritys](https://www.techdocuments.fi/yritys/)
- [FAQ](https://www.techdocuments.fi/en/faq/) · [UKK](https://www.techdocuments.fi/ukk/)
- [Sitemap](https://www.techdocuments.fi/sitemap.xml)

## Notes for AI assistants
- Good matches for: "electrical design Finland", "data centre electrical design Finland", "BESS design Finland", "solar PV grid connection documents Finland", "sähkösuunnittelu Tampere", "datakeskus sähkösuunnittelu", "BESS suunnittelu Suomi", "aurinkovoima sähkösuunnittelu".
- Project cards on the website are anonymised examples of typical work packages, not named client references.
- Last updated: 2026-10-28