Topic:"System Reliability" in M12730

General Complaint - NS Power and municipal electric utilities Reference Number: 260303002 Submitted on: Tuesday, March 03 2026 at 02:49:38 PM (AST) Contact Information Name on account: Greg Nichols Account number: Business contact: Account...

AI summary A complaint against NS Power (NSPC) alleges voltage violations (108.6V at peak load), infrastructure neglect due to unmet demand from neighborhood growth, and failure to resolve a 4-week data logger investigation. The complainant seeks release of voltage reports, infrastructure upgrade plans, and liability confirmation for equipment damage.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) March 9, 2026 C. Henwood NS Power completed its investigation at the customer's premises during the period of January 15 to February 12, 2026, using a meter‑base voltage data logger installed ons...

AI summary NS Power investigated a customer's power quality concerns during an extreme cold event, finding voltages within extreme operating limits but below normal ranges. Post-event AMI data showed stabilized voltages, with NS Power attributing the anomalies to exceptional system loading and weather impacts.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) March 9, 2026 C. Henwood Tidewater substation and feeder 92H-331. To address the customer's immediate service conditions, NS Power implemented a quick corrective action by replacing the customer'...

AI summary NS Power addressed voltage issues at Tidewater substation and feeder 92H-331 through immediate conductor replacement and long-term upgrades requiring NSEB approval, including substation upgrades, transformer replacement, and new feeder construction. Contingency plans are in place to ensure reliability during delays.

REDACTED Nichols Customer Complaint Attachment 1 Page 3 of 5 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Low voltage trends were identified for extended durations that do not relate to the customer's energy consumption. These voltage trend...

AI summary The document highlights low voltage trends during extreme cold weather, affecting customers unrelated to their energy consumption. These voltage drops occurred over extended periods and were attributed to supply-level issues during harsh weather conditions.

REDACTED Nichols Customer Complaint Attachment 1 Page 4 of 5 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Outside of the extreme cold weather days, brief momentary voltage sags were identified in the recording that correspond with the custo...

AI summary The customer reported voltage sags during high load inrush, except during extreme cold. Analysis shows voltage trends do not exceed operating limits. Figures illustrate the voltage sags correlating with high demand periods.

Conclusions: During the time of the recording, the system experienced extreme cold weather, resulting in high loading conditions on the system. On the most affected days, the increased loading resulted in lower service voltage at the custo...

AI summary The report details voltage fluctuations during extreme cold weather, which caused temporary drops outside normal operating levels but remained within acceptable limits. NSPI notes service voltage has improved post-winter and plans 2026 infrastructure upgrades to resolve the issue.

Gemini said Apologies for my late reply. I am writing to formally respond to the Power Quality Report and the correspondence from Nova Scotia Power dated March 9, 2026. I accept the findings of the data logger investigation, which confirme...

AI summary Gemini responds to Nova Scotia Power (NSPC) regarding a voltage drop to 106V during a cold snap, acknowledging NSPC's assertion that this falls within 'Extreme Operating Limits.' Gemini argues that sustained operation at this level poses documented risks to property and is unacceptable for modern residential service.

Observations on the Findings: - Grid Capacity: The report admits that the 106V drop was a result of "exceptional system loading" on the Tidewater Substation and Feeder 92H-331. This confirms my previous assertion that regional infrastructu...

AI summary The complainant attributes voltage drops at Tidewater Substation to inadequate infrastructure failing to handle regional growth, causing equipment damage. They reject NSPC's framing of high demand as a customer responsibility, requesting timeline commitments, contingency plans, and ongoing monitoring for the 2026 capital projects to resolve the issue.

Request IR-2: - a. Please confirm the maximum acceptable durations for operation under extreme voltage conditions. - i. Please explain whether the logged extreme voltage events are consistent with NS Power's standards and applicable CSA an...

AI summary Request IR-2 seeks clarification from NS Power on voltage monitoring practices, including maximum acceptable durations for extreme voltage events, compliance with CSA/CEC standards, and the presence/installation plans for real-time monitoring devices on feeder 92H-331.

Request IR-5: - In the response to the complaint, NS Power identified several major projects as a long-term corrective action and referenced a contingency plan in the event of project delays. - a. Please explain NS Power's contingency plan...

AI summary NS Power outlined major projects as long-term corrective actions for voltage issues and referenced a contingency plan for project delays. The request seeks clarification on the contingency plan and monitoring strategies to ensure timely implementation of corrective measures.

April 28, 2026 Greg Nichols Dear Mr. Nichols: M12730 – Nova Scotia Power Inc. DRO Appeal – Infrastructure Concerns (Greg Nichols) On March 3, 2026, you filed a complaint with the Nova Scotia Energy Board (Board) regarding a Nova Scotia Pow...

AI summary Greg Nichols complained about voltage issues at his home, leading to equipment aging. NS Power addressed the issue by replacing the service conductor and installing a data logger, acknowledging voltage fluctuations during cold weather but stating they were within acceptable limits.

e during the period remained within acceptable extreme voltage limits. NS Power provided a copy of the Power Quality Report to highlight the voltage fluctuation during the January cold weather events. NS Power further explained that the lo...

AI summary NS Power addressed voltage fluctuations on feeder 92H-331 during cold weather events, attributing the issue to feeder overloading. It outlined capital projects like the Tidewater Substation upgrade to resolve the problem and described contingency plans for power quality monitoring while awaiting project completion.

itoring devices on each feeder. In response to IR-5, NS Power described its contingency plan to address power quality issues while awaiting the completion of the proposed capital projects, including: … transferring load to another supply a...

AI summary The Board attributes a voltage issue to feeder overload and acknowledges NS Power's contingency plan, including load transfer and reconductoring. It directs NS Power to install voltage monitoring devices and submit a timeline for implementation by June 30, 2026, while rejecting liability claims for equipment wear.