Ghana replaces 20/26MVA transformers
- Electricity Company of Ghana started replacing two transformers at Kumasi’s Ridge Bulk Supply Point, swapping older 20/26MVA units for larger 30/39MVA equipment. - The work is scheduled for May 6-7, with controlled outages from 9 a.m. to 3 p.m. so engineers can lift, install, test, and commission safely. - It matters because Kumasi’s recent outages were tied to local network strain and voltage instability, not a national generation shortage.
Power transformers are the big, heavy pieces of grid equipment that quietly decide whether a fast-growing city gets stable electricity or constant voltage swings. Kumasi has been running into that limit at the Ridge Bulk Supply Point, where older units have been carrying more load than they were really built for. Now ECG is swapping them out for larger transformers — from 20/26MVA to 30/39MVA — in a bid to reduce outages and steady supply across the city. The work starts this week, and the immediate tradeoff is simple: short planned cuts now for fewer unplanned ones later. ### What is actually being replaced? ECG is replacing two existing transformers at the Ridge Bulk Supply Point in Kumasi with two higher-capacity units. The old rating was 20/26MVA. The new rating is 30/39MVA. Basically, that means the station can handle more load with more headroom, which matters when demand rises and the old gear starts running too close to its limits. ### Why does that number matter? Transformer ratings are the difference between a system that absorbs demand spikes and one that gets stressed every time usage jumps. Going from 20/26MVA to 30/39MVA is not a cosmetic upgrade — it is a meaningful capacity increase at a key node. Ridge is a bulk supply point, so pressure there ripples outward into neighborhoods, businesses, and public institutions connected downstream. ### Why Kumasi, and why now? The immediate problem is local reliability. Recent reports around Kumasi pointed to intermittent outages and voltage fluctuations tied to rising demand on the network. That is an important distinction — the issue here is not framed as Ghana running out of generation overall, but Kumasi needing stronger distribution infrastructure at a bottleneck point. ### What happens during the upgrade? This is the unglamorous but essential part. Engineers have to remove the old units, bring in the new ones, handle heavy lifting, connect protection systems, and then test and commission the equipment cleanly before it goes live. A transformer swap at this scale is a bit like changing an aircraft engine while the airport still has to function — the sequence and safety controls matter as much as the hardware. ### Will people lose power during the work? Yes — but in a controlled way. ECG and local reports say planned outages are expected on May 6 and May 7, with interruptions generally scheduled from 9 a.m. to 3 p.m. Some notices also describe a wider May 6-9 work window for the Ridge enclave, with affected areas seeing phased cuts lasting about six hours depending on the day’s schedule. ### Is this a one-off fix? Not really. Turns out this sits inside a broader Kumasi Ridge upgrade path. Earlier this year, ECG said it had begun procurement to replace and upgrade 33kV switchgear at the same bulk supply point. So the transformer replacement is part of a bigger effort to modernize a stressed substation, not just a quick patch for one bad week. ### What should readers take from it? The real story is not just “new equipment arrived.” It is that Kumasi’s power problems have exposed a distribution choke point, and ECG is now expanding one of the city’s key supply nodes. If the installation and commissioning go cleanly, the payoff should be fewer overload-driven interruptions and better voltage stability — the kind of upgrade people mostly notice only when it does not happen.
