With solar power, you take advantage of the sun’s rays – you use the heat via solar collectors placed on roofs and via solar cells, the rays are converted into electricity.
Solar energy is renewable and therefore poses no environmental risk during operation, it is also cheap to produce as the only thing that costs is the equipment that needs to be used. The most common area of use for solar energy is solar cells, which thus convert the sun’s rays into energy and solar collectors that convert it into heat.
As the northern countries have a cold climate, they need a supplementary heat source in winter. Often you can connect existing heating systems with the solar heat, for example, there may already be a wood boiler or heat pump installed in the house – then these can be combined and thus you can easily reduce the energy consumption on hot water. Even if you have a house with direct-acting electricity, you can take advantage of solar collectors as this can be connected to the water heater, thus halving the total cost of hot water.
Most people use solar power for the summer cottage or in environments where there is no possibility of getting electricity from the public grid. A battery is connected to the system that provides energy that is stored and which then allows you to have electricity even when the sun is not lit. In Sweden, it is also common for monitoring systems in traffic to be equipped with both solar cells and batteries.
Pros and Cons
+ Eco-friendly electricity
+ Cost effective
– Expensive equipment cost
– Unable to use 100% year-round in darker places of the world.