Scottish & Southern Electricity Networks — connection process

SSEN is the DNO for Stirling and Clackmannanshire within our 30-mile service area. Their G99 process runs slightly differently to SP Energy Networks — separate application portal, different commercial team.

G98 vs G99 — which applies?

• G98 (notification only): Single inverter ≤ 16A per phase (~3.68kW single-phase). Notify within 28 days of commissioning — no pre-approval needed.
• G99 (pre-approval): Anything larger. Connection offer issued first, then install, then commissioning. Connection offers typically 8-14 weeks for standard sites; we recommend submitting early to lock in timelines.

Typical SSEN timeline

1. Submit G99 application with single-line diagram + capacity request
2. SSEN accepts application + acknowledges
3. Connection offer issued (connection offers typically 8-14 weeks for standard sites; we recommend submitting early to lock in timelines.)
4. Accept offer + pay any reinforcement contribution if applicable
5. Schedule install + commissioning
6. Send commissioning certificate + MCS cert to SSEN

SSEN specifics

• Application portal: "SSEN Connections" — separate login from SP Energy Networks.
• Standby reinforcement charges occasionally apply for larger commercial sites.
• Off-grid/rural connections require additional engineering studies.
• Three-phase upgrade lead times can be longer in rural Stirling/Clackmannanshire.

Contact

Phone: 0800 048 3515
Portal: https://www.ssen.co.uk/connections/

Ecoaim handles every G98/G99 application on behalf of our customers — you don't touch a portal or speak to a DNO engineer unless you want to.