Contact details
Telephone service
| Customer service | 05 7780 500 |
weekdays 8–17, summer Fridays (period 1.6.–31.8.) 8–16 |
| Builder’s services and connection matters | 05 7780 510 | weekdays 8–16 |
| Switchboard | 05 77 801 | weekdays 8–16 |
| Fault notifications | 05 7780 222 | 24 h |
Email addresses
| liittymamyynti@ksoy.fi |
| yritysmyynti@ksoy.fi |
| firstname.lastname@ksoy.fi |
Service points
| Kouvola | Yhdystie 7, P.O. Box 9, 47200 Elimäki | Temporarily closed due to coronavirus situation |
| Kotka | Kotkantie 2, P.O. Box 65, 48101 Kotka | Temporarily closed due to coronavirus situation |
