In times of high energy costs and the consequent pollution of the environment, people are avoiding these delicate issues with using solar powered scales. The solar cells are integrated into the weighing surface. There are solar scales which are being charged with light energy, others are implementing the solar energy directly. The second option is far more expensive. If the sun does not appear, most of these scales can be operated with batteries.
Stamp balances are also being equipped with a solar module. These postal scales have a small electricity storage, which works because of the low power consumption of the device, in case of a power failure. This technique saves almost ten batteries in one year. Nowadays, solar scales are being used in offices as postage scales. Like solar calculators, these scales drag their energy from solar cells.