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SUBNET Solutions Inc.

OT remote management for mixed-vendor substations

ICS remote management and substation remote access for protection, control, and automation assets across vendors.

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Trusted by Leading Utilities Worldwide

Duke Energy
BC Hydro
Xcel Energy
Dominion Energy
Énergie NB
Orlando Utilities
Enel Group
Elektrilevi OÜ
Instituto Costarricense
DELSUR (Grupo
Eskom Holdings
TAESA
Equatorial Energia
Transelec S.A.
Evoenergy
Turlock Irrigation
Duke Energy
BC Hydro
Xcel Energy
Dominion Energy
Énergie NB
Orlando Utilities
Enel Group
Elektrilevi OÜ
Instituto Costarricense
DELSUR (Grupo
Eskom Holdings
TAESA
Equatorial Energia
Transelec S.A.
Evoenergy
Turlock Irrigation

From North America to South America, Europe to Australia, and across Africa and Central America, leading utilities trust SUBNET's proven expertise in critical infrastructure security and device management. See customer results →

70%
fewer site visits

Fewer truck rolls

Update firmware, change settings, and manage passwords remotely. Cut site visits by up to 70%.

4 hours
faster restoration

Shorter outage windows

Execute changes in parallel with bandwidth throttling and safe resume on poor links.

90%
less prep time

Faster audit prep

Export evidence by substation or time window. From weeks to days of prep work.

How PowerSystem Center works

1

Connect to mixed vendors

PSC speaks native protocols: IEC 61850, DNP3, Modbus. Works with SEL, GE, ABB, Siemens, Beckwith, and others.

2

Secure and approve actions

Time-bound access with MFA. Dual control for high-risk operations. Every action tied to named users.

3

Execute with evidence

Jobs run with throttling and retry logic. Complete audit trail with file hashes, versions, and outcomes.

Complete substation management

Remote firmware

70% faster updates

Ship approved firmware to every relay from the control room. No truck‑roll. No unplanned outage.

Config drift detection

<90 sec restore

Stop unauthorized changes before they become a mis‑trip. Single-click rollback with approvals.

JIT access

Zero standing accounts

Give technicians access only while work order is open. No standing accounts. 100% of dormant logins removed.

Asset discovery

90% less manual work

Know every relay, RTU, switch, and firmware in real time. Slash manual inventory work by 90%.

Password management

100% rotation coverage

Passwords changed automatically after every manual user interaction and/or periodically.

Bulk settings deployment

4 hours faster start

Push new protection logic to hundreds of relays in minutes for storm or wildfire response.

Proven results

65+
Countries with critical infrastructure deployed
Across 6 continents
39/50
US States with NERC CIP compliance enabled
Multi-vendor substations
70%
Reduction in relay update time
50-site DSO deployment
90%
Less manual inventory work
Multi-vendor fleet
4 hours
Faster restoration start
Emergency response

Customer Success Story

See how utilities are transforming their substation operations with measurable results.

Transmission & Distribution Pacific Northwest Utility

Reduced Firmware Update Time by 85%

Challenge

Manual firmware updates across 150 substations required 8-hour site visits and extensive coordination, creating security vulnerabilities during extended maintenance windows.

Solution

Deployed SUBNET's remote firmware management system with automated rollback capabilities and real-time verification across all SEL and ABB protection relays.

Results

85% faster
Update Time
Before: 8 hours
After: 45 minutes
100% remote
Site Visits
Before: Required
After: Zero
$204k saved
Annual Savings
Before: $240k
After: $36k

"SUBNET transformed our maintenance operations. We can now update firmware across our entire fleet in less time than it used to take for a single substation."

— Sarah Johnson , Lead Protection Engineer
Read Full Case Study
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Built for compliance

NERC CIP

CIP-005/007/010 evidence automation across 39 US states

IEC 62443

Change control and access management

NIS2

European operational logging and access governance

NIST SP 800-82

Record-keeping tied to assets and users

Ready to modernize your substation operations?

Start with one substation. See the results. Then scale across your fleet.

Get a demo