*2.6. Estimation of Mitigation of Electricity Use and GHG Emissions*

Electricity usage directly impacts the increases in GHG emissions. Reducing electricity consumption not only helps decrease GHG emissions, but also reduces the cost of electricity. Table 1 presents the possible options for electricity saving scenarios.


**Table 1.** Options for electricity saving scenario.

Notes: Superscripts represent assumptions as follows: <sup>a</sup> the spare computer near the door was not in used; <sup>b</sup> all computers turned off during lunchtime; <sup>c</sup> not used continuously for printing; used for approximately one hour per day; <sup>d</sup> turned on only when in use; <sup>e</sup> no food kept in the office refrigerator overnight; <sup>f</sup> turned on from 09.00–12.00 and 13.00–17.00 (turned off during lunchtime); <sup>g</sup> turned on from 13.00-17.00; <sup>h</sup> turned on instead of AC; <sup>i</sup> turned off during lunchtime.

The different options that are shown in Table 1 were designed in collaboration with the room occupants, who were interested in the effect on the cost of electricity and global warming potential (GWP) if they all agreed to try them. The duration of working without AC for Cases A, B, and C were aligned with Cases 1, 2, and 3 in Section 2.3, respectively. Case 4 (no AC) was not re-assessed, since its results could be estimated from the other cases and its application was, in any event, not realistic. Case A was a typical case, whereas Cases B and C for other appliances represented situations that were not convenient, but feasible in practice.

### **3. Results and Discussion**
