Regional reliability evidence record
Yenra | Updated October 1, 2026
Article: https://yenra.com/power-grid-security/

Purpose: document what a reliability claim actually tests. This is a reading aid, not an engineering study or an operating procedure.
1. Identify the region and dated study.
   Operator: __________  Geographic/electrical boundary: __________
   Study title/URL/version: __________  Publication date: __________
   Forecast years/season: __________  Connection points: __________
2. Copy assumptions with units and sources.
   Peak demand (MW): ____ Available local output (MW): ____
   Available imports (MW): ____ Reserve requirements (MW): ____
   Fuel/weather dependencies: ____  Studied outage/contingency: ____
3. Screen arithmetic, then record the study evidence.
   Supply margin (MW) = available local output + imports - demand.
   Repeat using the documented resources available after the named outage.
   This screen omits detailed reserve, voltage, stability and network limits.
   Engineering finding and exact page/table: __________
4. Record proposed improvement, approval/construction status, unresolved
   assumptions and the next document needed to resolve them: __________

FICTIONAL EXAMPLE: 70 MW local + 100 MW imports - 150 MW peak = 20 MW.
After an assumed import reduction to 60 MW: 70 + 60 - 150 = -20 MW.
That is a 20 MW gap under the assumptions, not a verified operating limit.
Keep ratings separate from dependable resources and avoid counting a
resource twice. Correlated fuel and transmission constraints need study.
Source context: NMISA April 2026 Seven-Year Outlook; use its own system
boundary and study period. Find current reports at https://www.nmisa.com/documents-2/