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Guides creation of systematic energy efficiency plans using ISO 50001 and ASHRAE standards for buildings, facilities, or portfolios.
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Develop a systematic, measurement-driven energy efficiency plan using ISO 50001 and ASHRAE standards to deliver verified, sustained energy savings.
Develop a systematic, measurement-driven energy efficiency plan using ISO 50001 and ASHRAE standards to deliver verified, sustained energy savings.
Adopted by: ISO 50001 certified by 20,000+ organizations in 170 countries; DOE Better Buildings Challenge (3,000+ partners, 5.4B sq ft); EU Energy Efficiency Directive (mandatory energy audits for large enterprises); ENERGY STAR certified buildings program (300,000+ US buildings); LEED and BREEAM certification energy requirements
Impact: ISO 50001 implementers achieve average 10% energy reduction in year 1, 20–30% over 3 years (IEA 2016 analysis); DOE Better Buildings partners collectively saved $15B in energy costs and 210 million metric tons of CO₂ since 2011; ASHRAE 90.1-compliant designs use 30% less energy than pre-2004 code buildings
Why best: ISO 50001's Plan-Do-Check-Act framework institutionalizes energy management so savings persist beyond individual projects, unlike one-time equipment upgrades that degrade without ongoing management.
Sources: ISO 50001:2018 "Energy management systems — Requirements with guidance for use"; ASHRAE Standard 90.1-2022 "Energy Standard for Buildings Except Low-Rise Residential"; US DOE "Better Buildings Program" guidelines; ASHRAE Handbook of Fundamentals
Establish energy baseline — Collect 24–36 months of energy bills (electricity, natural gas, fuel oil, steam, chilled water) by meter and end use. Calculate Energy Use Intensity (EUI = kBtu/sq ft/yr or kWh/m²/yr) as the primary performance metric.
Conduct energy audit (ASHRAE Level 1–3) — Perform minimum Level 1 walk-through audit to identify low-/no-cost opportunities; Level 2 energy survey with savings calculations; Level 3 detailed/investment-grade analysis for capital projects.
Identify Significant Energy Uses (SEUs) — Per ISO 50001, identify systems that represent the largest energy consumption or have the greatest potential for improvement (typically HVAC, lighting, process equipment, compressed air, refrigeration).
Analyze energy performance indicators (EnPIs) — Normalize EUI against relevant variables (occupancy, production volume, degree days, hours of operation) to isolate true efficiency performance from activity changes.
Develop Energy Opportunity Register — Catalog all identified measures with: estimated annual savings (kWh and cost), implementation cost, simple payback period, NPV at 7% discount rate, GHG reduction (tCO₂e), and implementation complexity rating.
Prioritize measures by payback and impact — Implement in tiers: Tier 1 (no cost: operational changes, setpoint optimization, scheduling) → Tier 2 (low cost <$5K: controls upgrades, LED retrofits, pipe insulation) → Tier 3 (capital: equipment replacement, building envelope, HVAC system replacement).
Develop Measurement and Verification (M&V) plan — Follow IPMVP (International Performance Measurement and Verification Protocol) Option A, B, C, or D per project type. Define baseline period, measurement boundary, and reporting period.
Set energy targets and assign accountability — Establish SMART annual EUI reduction targets (recommend 2–5%/yr); assign energy champions per facility or system; integrate energy KPIs into operational scorecards.
Implement energy management controls — Deploy building automation system (BAS) setpoint optimization, occupancy-based lighting and HVAC controls, demand response participation, and real-time energy monitoring dashboards.
Report and verify savings — Calculate realized savings monthly using M&V plan; compare against targets; investigate deviations >10%; report normalized EUI to benchmarking programs (ENERGY STAR Portfolio Manager, GRESB, CDP).
npx claudepluginhub jeffreytse/grimoire --plugin grimoireAssesses building or facility energy consumption to identify waste, prioritize efficiency improvements, and establish reduction baselines.
Optimizes electricity and gas procurement, tariff structures, demand charges, PPAs, and multi-facility energy cost management for C&I consumers.
Helps select and apply building sustainability frameworks including LEED, BREEAM, Passive House, WELL, DGNB, and Living Building Challenge.