[yjgyhj]

It's 45% nuclear and 45% hydro [0] according to Dagens Nyheter, an old and reliable news paper.

[0] - http://www.dn.se/ekonomi/vattenkraft-och-karnkraft-ger-sveri...

[ptaipale]

Or Wikipedia, which has similar numbers. https://en.wikipedia.org/wiki/Electricity_sector_in_Sweden

Note that this is the production. Consumption is a bit different because Nordic countries share the electricity market and the grids are connected. Consumption could use hydroelectric from Norway or wind from Denmark or nuclear from Finland, or from Russia via Finland.

For a picture of the market just now, look: http://www.statnett.no/en/market-and-operations/data-from-th...