How Does a Solar Battery Keep Your Lights On During Dumsor?

 by Deep Solar Ghana

What dumsor does to a home without solar

Dumsor, the power cuts that come and go across Ghana, can disrupt work, study and sleep. Fridges stop, fans go quiet, and phones charge slowly or not at all. A home with solar can respond to these outages in a different way, but only if the system is designed for it.

To understand how, it helps to know the basic parts of a solar system.

How solar panels make power

Solar panels are made of solar cells. When sunlight hits these cells, they produce direct current, or DC, electricity. Panels work best when they are mounted where they catch strong sunlight for most of the day. They keep producing some power on cloudy days too, though less.

Panels alone do not power a normal home, because household appliances run on alternating current, or AC. That is where the inverter comes in.

The role of the inverter

The inverter converts DC from the panels into AC that your appliances use. It is the heart of the system. A good inverter also manages how power flows between the panels, the battery, the grid and your home. Inverters must be matched to the size of your system and to your daily needs.

Why batteries make the difference

Batteries store extra solar power made during the day so it can be used later, including at night and during outages. Lithium batteries are a common choice today because they are compact, efficient and need little routine maintenance compared with older battery types.

A battery does not make power on its own. It only holds what your panels have produced, so the size of both the panel array and the battery matters.

Three ways to set up solar

There are three common setups in Ghana.

Grid-tied systems connect panels to the main supply. They reduce how much you draw from the grid during the day. On their own, though, they usually shut down during a blackout, so they do not keep your lights on during dumsor.

Hybrid systems combine panels, batteries and a grid connection. Solar supplies your home first, extra power charges the battery, and when the grid goes off the system can run your key loads from the battery. This is the setup most homes facing dumsor look at.

Off-grid systems run without the grid at all, relying on panels and batteries. They suit homes or sites with no grid connection.

What a hybrid system can power during dumsor

A hybrid system is designed to keep essential loads running, not necessarily everything in the house. Common choices include:

  • LED lights and ceiling fans
  • Phone and laptop charging
  • Wi-Fi router
  • Refrigerator or freezer, depending on size and load
  • Water pump, where it is practical

Heavy appliances such as electric cookers, air conditioners and water heaters draw a lot of power and usually need a much larger system. Be honest with yourself about which loads matter most before you choose a size.

Steps to plan your hybrid system

  1. List your appliances and how many hours each one runs per day.
  2. Separate essential loads, such as lights, fridge and router, from non-essential loads.
  3. Check your roof for direction, shade and space for panels.
  4. Talk to a licensed installer about battery capacity and inverter size.
  5. Ask for a written design that shows what the system will and will not run during an outage.

Questions to ask before you buy

Ask how the system behaves when the grid goes off, which loads it is sized for, what battery type is used, and what the warranty covers in writing. A reputable installer should be happy to explain each part plainly.

Estimate your own needs with the calculator

Every home uses power differently, so the right system depends on your appliances, your roof and how much backup you want. To get a starting point, open the calculator at /calculator on the Deep Solar Ghana website. It helps you size a system and see the installed price for your setup. For a conversation about your home or business, call or WhatsApp 059 549 4113.