KWH-Preis is an information and comparison portal focused on electricity, gas and household energy costs. It helps consumers explore tariffs, understand their energy use and make informed choices about suppliers and potential savings. Visitors can compare electricity and gas plans using online calculators, with options to assess green electricity, heating electricity and combined electricity-and-gas tariffs. The site also provides a photovoltaic calculator to estimate potential solar generation and savings.

Alongside comparison tools, KWH-Preis offers practical guidance on switching providers, saving energy, moving home and choosing renewable-energy options such as biogas. Its articles explain topics including household consumption, kilowatt-hours, electricity meters, tariff structures and energy regulation. A tariff adviser guides users through questions about their priorities, such as low prices, predictable costs, renewable energy or flexibility, while noting that detailed prices are available through the comparison calculator.

The portal also publishes energy news and a free newsletter. Its stated aim is to help consumers reduce energy expenses, use energy more efficiently and make suitable decisions for their homes.