Purchase Energy Efficient Appliances
According to energysage.com, though energy efficient appliances have higher purchase prices, their operating cost are 9-25% lower than conventional models. This means that it is better in the long run.

Reference:
Tip source:
https://www.energysage.com/energy-efficiency/101/ways-to-save-energy/
Image source:
https://www.conversioner.com/wp-content/uploads/2014/09/Depositphotos_9472457_s.jpg