Energy storage
Your own photovoltaic system becomes really smart when coupled with battery storage. It gives you full control over the energy use of your property while maximizing both environmental benefits and independence from external factors.
Battery storage - profitable independence
Installing an energy storage system provides you with a tool to manage energy flows in the best and most profitable way possible. For example, by connecting the energy storage to a photovoltaic system, you can store excess electricity to use it at times when it is more needed. A well-designed battery allows you to take advantage of variations in hourly prices across the day to buy or sell electricity to or from the grid when it makes the most sense. Connecting the battery to Svenska Kraftnät's support services can further improve profitability.
We help you to dimension the battery storage according to your company's conditions, needs and functional wishes.
Smart support services that pay you well
The term ancillary services may sound a bit misleading, because it is not about any extra services you buy for your battery or solar plant. On the contrary - you are enabling ancillary services that help the grid, and you get paid for it. This involves smoothing out disturbances in the electricity grid, commonly known as FFR (Fast Frequency Reserve) and FCR-D (Frequency Containment Reserve - Disturbance).
In some areas, there are so-called Flex Markets for the local electricity grid. Instead of expanding the electricity grid, the grid can be relieved by connecting batteries nearby - for which you are compensated by the grid owner.
When your battery is connected to the grid, it acts as a buffer, part of a virtual network of batteries across the country. At times of the day when the load on the grid is at its highest, electricity is drawn from your battery, to be sent back when power demand is lower. Everything happens automatically and you are compensated for the inconvenience. The bigger the battery, the more you can get. The exact amounts vary over the years, but can range from a few thousand dollars to several hundred thousand each month - so much so that your battery investment can pay for itself in just a few years.
Through so-called electricity arbitrage, i.e. automatic trading of electricity that adapts to current hourly prices, you can also charge the battery when electricity is cheapest - not just when the sun is shining - and sell it back when it is most expensive.
Cut peak power - reduce your electricity bills
Another benefit of battery storage is that you can even out your own consumption over the day. Almost all electricity companies now use power billing, which is based on your highest power consumption during the month. By using stored electricity when you consume the most, you reduce peak power and can therefore significantly lower your electricity bill. The amount of power that can be drawn at any given time depends on the property's main fuse. For example, if you install fast chargers for electric cars, the fuse may need to be increased - a cost you can avoid with battery storage. A battery also allows you to use more of your self-generated electricity, instead of selling the surplus during the day.
Coping with power cuts
A battery storage system also makes it possible to cope with even longer power cuts - how long depends, of course, on how much is being consumed at the time. This is called islanding, where the property's needs are covered by the battery until the power is restored. The stored energy may not cover everything, but we can size the battery storage to cover the basic needs - some types of consumption can be dispensed with for a shorter period.
References
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