Hi Robin,
Our weather has become increasingly erratic over the last 15 years or so. I put it down to climate change. Right now we are in the middle of a relatively normal rainy season. That means that the ITCZ (Inter-Tropical Convergence Zone) moves over the country and it rains – quite a lot. Most of our rains happen from mid November to the end of March which in Harare means some 700 to 800mm. The rain can be quite intense – we had 75mm (3 inches) in several hours last week which meant all the rivers around town were up and one of the reservoirs that supplies town was spilling. As a country we’ve had good rain for the last 3 years due to the la Niña effect though it has been quite variable over the country and Harare, which is in a high rainfall area, received less than average. We are due for a drought and I see that there is a el Niño predicted later in the year which is a reliable indicator.
There’s rain around as I type this and yesterday afternoon we had quite a storm with high winds and hail and of course the power went off. It’s still off but we are geared for this eventuality and have solar panels and two lithium batteries to get us through the night. Power outages for other reasons, mainly incompetence and over-use of Lake Kariba as a hydro source, are common so everyone who can has a solar backup plan. Solar water heating makes a lot of sense in our climate so we have three solar heaters, one for us, one for the cottage tenants and one on the domestic employee’s rooms. In the cloudless, hot days of August and September the water can easily boil.

I see your weather has been erratic too. Mt Washington in the north-east of the USA hit a record -70C a few days back and Europe had an unseasonably warm Christmas. It seems that California has had some heavy rains too; the default weather app on my new iPad is set to the Apple headquarters in Cupertino and they had flood warnings out recently.
Planned, and I use that word loosely, power outages are called “load shedding” in this part of the world. Towards the end of last year it was announced that Lake Kariba, which is our major source of hydro power, had got to it’s minimum level permitted for generation due to over-use by the Zimbabwe power authority and load shedding would become a daily occurrence. We have another major thermal power station at Hwange in the west of the country but it has become a byword for mismanagement and cannot take up the shortfall. We also import a lot of power from Mozambique and South Africa but have managed to get into a lot of debt so the aforementioned countries are fed-up and restricting our supply. South Africa has its own power supply issues (again due to mismanagement by the state-run utility) and is also imposing load shedding but at least it sticks to a schedule. In Zimbabwe the power generally goes off in the suburbs about 6.30 a.m. and comes back on around 10 p.m. Businesses are not exempt either and incur heavy costs due to diesel generators. It’s not unusual for some to run just on night shifts.
Our swimming pool was an early casualty of the power cuts. It’s essential to keep the filter running which the solar panels can do on a sunny day but those are rare in the rainy season so it’s more green than clear these days. Marianne was muttering about the cost of more chemicals to try and clear it. I pointed out that we could always fill it in but it wouldn’t be a cheap procedure and then we’d lose some 70,000 litres of stored water that would be very useful in a drought. We have decided to live with it being more green than not (it is covered over in winter when not in use).
The book you asked about is, I think, “The Shackled Continent” by Robert Guest who was an Africa correspondent for The Economist for a number of years. I found it fascinating and very insightful. Maybe I should read it again.
My business muddles along. I have a lot of outstanding debtors and it’s not so simple as insisting that they pay up front for their orders. I hate having to get nasty but it may eventually come to getting professional debt collectors in as I need to get the money to pay for imports of the coir “peat” raw material that we use to grow the seedlings. I obviously cannot use Zimbabwe dollars but fortunately I did invoice in US dollars which once again is becoming the currency du jour. The government is still trying desperately to keep the local dollar alive but with an official exchange rate of 740 to the US dollar compared with a “parallel”, i.e. street, rate of 1,100 to the dollar, it doesn’t have much of a chance. The local currency is still used, and has to be offered, as a payment method but most outlets make it very attractive to use the US$ by offering massive discounts . Government departments don’t do this so get paid almost entirely in local currency which means they are perpetually in financial difficulties – hence the disastrous state of the power supply, roads, rail links and anything else they are involved in. Am I making sense?
The government is also trying to stifle speculation on the currency markets by lending money at vast interest rates, 110% in November 2022, which makes doing business very difficult and one of the reasons that I use to explain why my business is so flat. The other is the proliferation of competition, often informal, which cut lots of corners allowing them to undercut my prices. Their quality is dismal but people either don’t care or see it as an acceptable consequence of the cheap prices. My prices haven’t changed in four years despite the rising costs of inputs in real (US dollar) terms. It doesn’t make for attractive business. Curiously the construction business is booming with cluster homes (small, single level apartments – several to a property) and other developments being built throughout the suburbs. Quite where the money is coming from I cannot ascertain – but in an economy as moribund as ours it’s almost certainly dirty.
Yes, us Zimbabweans are a resourceful lot and I guess in that respect Diana remained true to her heritage. My workroom/office is full of junk that I cannot throw away just in case I find a use for it in years to come. It must be a hold-over from the days when Zimbabwe was Rhodesia and under sanctions so nearly everything that could be was recycled. It’s probably an attitude of my generation rather than today’s “youngsters” – I drive past a municipal rubbish tip on the way to work and there’s never a shortage of trucks pulling in to offload. I suppose people do make a living out of recycling here though it’s not as fashionable as in the developed world. An elution plant (recycling gold from electronics) has recently been constructed at the former rubbish dump. It’s also not unusual to see carts being pushed around the suburbs and having one’s gate bell being rung by the owners looking for scrap metal.
I guess our “big” news for this year is that we’re going over to the UK in May to attend a rock concert! I’ve never been to one as standing for a long time in rowdy crowds is obviously not possible for me but this is Mike & The Mechanics who are not as popular as they used to be so seating is an option. Time to tick off the bucket list.
Then we are going to stay on the Cote d’Azur with an old girlfriend and her husband for four days. Apparently we’ll be quite close to St Tropez. Marianne is keen to go and see how the ultra-rich live but I may give it a miss. Really looking forward to it and we’re brushing up our rudimentary French in anticipation.
Well, on that positive note I’ll sign off and wish you all the best for this year. Forget the snow shoveling, go skiing and may it be exceptional.
Ciao
Andrew
Note: this is a genuine reply to a friend in Washington State U.S.A. who was a good friend to my sister Diana, and helped look after her in the terminal stage of her cancer three years ago.




Taming the voltage
1 05 2026It became evident soon after we installed the solar panels and inverter that we were going to have to do something about the terrible power quality. Most of Zimbabwe has erratic power supplies. Called “load shedding” it’s really just a statement about the government’s ineptitude in supplying power to the nation. The national supplier, ZETDC (Zimbabwe Electricity Transmission and Distribution Company) is a subsidiary of Zimbabwe Electricity Supply Authority (ZESA) and is the sole distributor of power. Other subsidiaries, also government companies, are responsible for sourcing power. It’s a mess and a major driver of the private sector embracing solar power. We have a friend who works for a company that installs industrial sized solar systems and she tells us that they cannot keep up.
Our problem is not power supply per se, but a wildly fluctuating voltage. We have been told that we are on the same part of the power grid as a “person of influence”, i.e. a political fat cat, so we don’t often get intentional power cuts though faults are not uncommon especially during the rainy season.
We installed the voltage protection unit (VPU) pictured above to protect the solar inverter from the voltage which we have seen anywhere from 280 volts down to 160 volts. It simply disconnects the supply outside of the safe range of 190 volts to 240 volts. During the day the supply is often above this range and at night it falls below. We can hear the VPU switching on and off in the evening and the lights flicking as the inverter takes over. Most of the time it is merely tedious but on occasion the voltage goes low for so long that the solar battery goes flat and the lights go off. Especially in cloudy weather when the solar battery never fully charges.
Over the years I have acquired a reasonable collection of woodworking and other power tools. These are in the spare garage next to the cottage in the garden and most can run off the cottage solar system. The planer/thicknesser and it’s accompanying dust collector cannot as they draw too much power so must run off the mains supply and the voltage fluctuations would destroy the motors very quickly. The planer is a very useful machine and because I am so dependent on it very little happens in the woodworking sphere these days.
Whilst I knew that voltage regulation units (VRUs) that supply a constant voltage existed, I had researched them on the internet and found that they tended to be large and very expensive. I asked my friend Barry, who is a professional carpenter, what his solution would be. He has liquidated his company he has no large machines but I thought he might know someone who did. It turned out that he and his partner had just installed a relatively small VRU in a flat that they’d bought and were available locally for less than US$1,000. So I got hold of the company and started asking questions, lots of them.
Having ascertained that I would need a 15kVA regulator and that the warranty would be valid for a year they couldn’t give me a clear answer as to whether it would be valid, or what would happen to the unit, if the voltage went outside the maximum rated supply of 250 volts. Asking around led me to another hardware outlet but they were only interested in selling the VRU and had little backup and simply wouldn’t answer the voltage range issue. A chance conversation with one of my cousins and with an electrician that he knows led me to call Richard of ElectroTronics and he answered all my questions.
ElectroTronics is based in the Southerton industrial area of Harare. Once a bustling hub of industry it’s a lot quieter than I remembered (I had no reason to go there for quite a few years) but was surprisingly clean. The roads were mostly good though the one past ElectroTronics was in very poor shape.
Richard is a very trim man, not looking at all like his 70 years and he assured us that he’d been in the business nearly 50 years. His small warehouse was impressively well stocked, indicating an active business, and he happily gave of his time explaining the principles of VRUs. The one we’d opted for was essentially a variable transformer. “Of course they are made in China” he responded to my inevitable question. “I could sell you that Italian-made one for 18 times the price but these work just fine” he added (we paid $900). He has sold VRUs to all manner of customers including hospitals, laboratories and factories. The biggest was 1,000 kVA. “I back up and repair everything I sell and if it’s a genuine part failure I will honour it outside the warranty”.
Having got the AVR home my brother Duncan noticed some cosmetic damage to the case. I sent in pictures to Richard and asked if it would jeopardize the warranty. He apologized, said no, and the machine was replaced that afternoon. I was VERY impressed!
The AVR is installed in our kitchen (the only place where it can be easily placed to supply regulated/stabilized power to the whole property) and my woodworking machines work just fine! However, a VRU can obviously only work when there’s power and the next day there was none. Fortunately a WhatsApp message to the local faults department led to a prompt replacement of the problem fuse in the nearby sub-station. We’re back in business!
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Tags: ElectroTronics, renewable-energy, solar, solar power, Technology, travel, Volatage Stabilizer, voltage, Voltage Regulator Unit, ZESA, ZETDC
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