Backup power for a Nairobi short let: what actually needs to stay on

Almost every Nairobi building advertises backup power. Very few of them mean that your apartment keeps working. Usually it means the corridor lights, the lifts, the borehole pump and the gate stay on, and your guest sits in the dark wondering why the generator they can hear is not helping them.

Find out what you actually have

Do not ask the agent, and do not read the brochure. Test it, which takes twenty minutes and settles the question permanently.

1. Ask the building manager to tell you the next planned generator test, or simply wait for the next outage and be in the apartment
2. When the power goes, walk the unit. Do the lights work? The sockets? Which ones?
3. Check the fridge, the router, the water pump and the water heater specifically
4. Note how long the changeover takes. Two seconds is fine, ninety seconds means every call drops and every router reboots
5. Ask how long the generator can run and who fuels it. A generator that runs for two hours is a different proposition from one that runs all day

Partial backup is worse than none for a guest, because the sound of a working generator while their lights are off reads as somebody else being looked after.

What actually needs to stay on

You do not need to run the whole apartment. You need to run the five things whose absence generates a complaint, and that is a much smaller and cheaper problem.

• The router and fibre terminal. The single highest priority. Working internet during an outage turns a crisis into a non event, and it draws almost nothing
• Lights in the living area, kitchen and bathroom. Not every light. Enough to move around safely and not feel stranded
• Phone and laptop charging. One or two sockets is sufficient
• The fridge. Matters more on long stays, when a guest has actually bought food
• The water pump, if it is on your unit’s supply rather than the building’s. Worth establishing, because no power meaning no water turns one problem into two

Notice what is not on the list: air conditioning, the water heater, the oven and the washing machine. Those are heavy loads, guests can wait for them, and trying to cover them is what makes a backup system expensive.

The options, cheapest first

• A small UPS on the router. Very cheap, keeps the internet alive for a couple of hours, and it is the best value item in this entire article. Do this even if you do nothing else
• Rechargeable lamps and a torch, kept charged and somewhere the guest can find them in the dark, mentioned in the house manual. A stopgap rather than a solution, and better than nothing
• A modest inverter with a battery, wired to a dedicated circuit covering lights, sockets, the router and the fridge. This is the sensible answer for most Nairobi apartments and it is not a large expense
• A larger inverter with more battery capacity, if outages in your area are long or frequent, or if you are running a premium unit where a dark evening is unacceptable
• Solar plus battery, which makes sense over a long horizon and for a property you intend to hold. Excellent in Nairobi’s climate. See solar and backup power for Nairobi rentals

Tell the guest before it happens

Half the value of a backup system is the communication around it. A guest who has been told what to expect handles an outage calmly. A guest who has not assumes the property is broken.

• Say in the house manual that outages happen occasionally in Nairobi and what stays on when one does
• Say where the rechargeable lamp is
• Say what will not work, so a guest is not standing at a cold shower wondering whether to call you
• Say what to do if it lasts more than an hour, and give them a name
• Do not oversell it in the listing. “Backup power for lights, sockets and internet” is accurate and sufficient. “Uninterrupted power” is a promise you will break

The part everyone forgets

Inverter batteries degrade, and they do it invisibly. A system that ran for four hours when installed may run for twenty minutes three years later, and you will discover this through a guest.

• Test the inverter under load every few months, deliberately
• Note the battery age and expect to replace it on a cycle
• Check the UPS on the router too, which fails just as quietly
• Add a power test to the turnover checklist at least monthly. See the turnover standard and its resets

How Goldstay handles it

We establish what a building’s backup actually covers before taking on a short let, put the router on a UPS as standard, and recommend a modest inverter where the building leaves apartments dark. We describe backup accurately in listings rather than generously, because an overpromise here is a guaranteed review.

All of it is included in full Airbnb management in Nairobi, if you would rather hand the property over.

Related reading: wifi expectations and why the building matters more than the suburb.