A methodology for electricity monitoring and targeting (M&T) in an Irish precision engineering SME

Figures & data

Figure 1. Virtuous cycles of engagement and energy saving.

Figure 2. Hierarchical levels of energy management in industry.

Table 1. Hierarchical cycles of energy management.

	Level	Key performance indicators	Energy tools
Cycle 1	Factory	Total energy consumption	Utility energy analysis, deskstudy, electricity heatmap, waste energy cost study
Cycle 2	Function	Significant energy users (SEU)	Facilities analysis, walkthrough audit, aggregated time-of-use costs
Cycle 3	Value Stream	Specific energy consumption (SEC), Co-efficient of performance (CoP)	Process mapping, specific data logging, power profile analysis
Cycle 4	WorkCell	Energy performance Co-efficient (EnPC)	Monitoring of activity and energy consumption in realtime

Figure 3. Annual electricity profile of manufacturing facility.

Figure 4. Aggregated weekly power profile (kWhrs) for a manufacturing plant.

Figure 5. Base-load through Christmas shut-down.

Figure 6. ‘Heat Map’ of electricity consumption.

Figure 7. Material profile variation on a machine.

Table 2. Energy performance indicators.

Electricity_UnitCost_Daytime	€0.2195 per kWh
Electricity_UnitCost_Nighttime	€0.1652 per kWh

Figure 8. Hi-turner current profile.

Figure 9. Okuma Current Profile 13 March 2015–27 March 2015.

Figure 10. Cincon M32 current profile.