Iceland relies on Reykjavik Energy to provide hot and cold water and electricity to homes near and in Reykjavik. Most Icelandic homes have running hot and cold water, with hot water used for heating homes and taking showers. About 90% of energy goes to home heating and 10% to bathing, cleaning and dishwashing. The weather in Iceland is very changeable and can include all types of conditions in a single day, from 20-25°C in summer to below -15°C in winter. Iceland has many rivers, waterfalls, lakes and glaciers that are popular tourist attractions, including the largest glacier, Vatnajökull.