Caldera certifies the Entice to California Energy Commission (CEC) and APSP 14 standards, a useful efficiency proxy if you live elsewhere. Actual monthly electrical cost depends on your local utility rate, ambient temperature, soak frequency, and whether you run the heater on 115V (1 kW) or convert to 230V (4 kW). With 250 gallons of water, the Entice heats and re-heats faster than larger Vacanza or Paradise models. Ask a Seven Seas advisor for an operating-cost estimate based on your climate and electricity rate.