April 2025
While the market for diesel generator sets has experienced sustained long-term growth, which is likely to continue into the foreseeable future, over the last 25 years there have been bumps along the way. Â
Here we look at some of them, their causes and results. Â
A Growing Market
Over the last 25 years and especially in the last 5 years, the market for diesel generator sets has been on a remarkable growth curve. Each year, there are always ups and downs at a micro, country level. But sometimes at a macro level, the industry experiences major events that impact regions or the entire global market. We have seen 4 of these over the last 25 years and below we take a look at their effects.Â
But Volatile
One of the standout features of the following charts for the downturns is how even small movements in economic growth can have a major impact on the market for diesel generator sets. At a customer level, economic slowdowns or a loss of business confidence often leads to pausing or delay in investment or projects and a resulting decline in the market, even while the economy is still growing overall. Equally, when that confidence returns and projects start moving again, the market often experiences a surge in growth, far in excess of general economic growth. Â
For producers of diesel generator sets, when there's economic turbulence it can often feel like a roller coaster, with the market under-shooting on the way down and over-shooting on the way up. Â
And this means that when business is good, it's always wise to have a solid plan ready for more challenging times. Â
The Dot.Com Bubble: 2001 - 02
The early days of the internet led to the creation of many start-up businesses online. And just as in the data center sector today, many of them required a source of standby power, usually a diesel generator set, to avoid service disruption in the event of power outages. Many of these generator sets were at higher ratings. Â
These online start-ups held out the possibility of high returns on investment and attracted major investors. But by mid 2000, it appeared that many were overvalued and burning through cash with no possibility of making a financial return. A few of them survived to become household names today, but many did not. Â
The bubble was starting to deflate, shrinking rapidly until 2002. And the impact was felt in the diesel generator sets industry as businesses folded and orders were canceled. The market for diesel generator sets declined by 10% between 2001 and 2002.Â
But while the market at lower ratings dipped only slightly and recovered quickly, the greatest decline was felt at higher power ratings. Â
At ratings above 1500 kVA, in 2003 the market bottomed out at 40% below 2000 levels, not recovering fully until 2006.Â
The Dot-Com Downturn 2001 - 02
2001 = 100
Source: Genstat from Parkinson Associates. GDP data from World Bank national accounts data, and OECD National Accounts data files. Â
The Dot.Com downturn impacted mainly products at higher power ratings in North American markets and to a lesser extent Europe.
Global Financial Crisis: 2008 - 09
Although its roots were in 2007-8, the global financial crisis impacted the diesel generator sets industry most strongly in 2009 as many projects and investment came to a halt. Â
The diesel generator sets market declined around 18% by 2009, a 20% decline at ratings below 1500 kVA and around 13% decline above 1500 kVA.  Â
Europe, CIS and Latin America were particularly hard hit, declining more than 30% by 2009, China by 20%, with other regions declining 10 - 15%.
But recovery was relatively swift, especially at higher power ratings. By 2010, projects that had been delayed were restarted and targeted economic stimulus packages were taking effect, with major focus on infrastructure investment to drive economic growth. All of this helped the diesel generator sets industry. Plus, the data center sector was starting to gain momentum. Â
By 2010, the market was back to pre-financial crisis levels and the market at ratings above 1500 kVA was more than 25% higher. Â
The 08-09 Financial Crisis Downturn
2008 = 100
Source: Genstat from Parkinson Associates. GDP data from World Bank national accounts data, and OECD National Accounts data files. Â
Market recovery from the global financial crisis was helped by economic stimulus packages from governments.Â
The Mini Recession of 2016
The mini-recession of 2016 had its roots in an almost 20% fall in the Chinese stock market, which spread to other regions and which was compounded by the uncertainty of the UK leaving the European Union in mid 2016. A cut in oil production led to recessions in Brazil and Venezuela and in the Middle East and Africa, oil-producing countries saw lower economic activity. Â
As investment was delayed, the diesel generator sets industry saw a decline of around 7% overall, an 8% decline at ratings below 1500 kVA and a 5% decline above 1500 kVA.
The markets most affected were in Africa  / Middle East, dropping 15 - 20%, Latin America dropping 10%, India and SE Asia, dropping around 6%.
By 2016, most of the government-backed stimulus packages implemented after the 2008 financial crisis had run their course and 2016 - 2019 was a period of low growth for the diesel generator sets industry, especially at lower ratings. Â
Only in 2019 was there significant growth at higher ratings, and this was due mainly to greater activity in the data center sector. Â
The Mini Recession of 2016
2015 = 100
Source: Genstat from Parkinson Associates. GDP data from World Bank national accounts data, and OECD National Accounts data files. Â
The mini-recession of 2016 heralded a period of slow growth for the diesel generator sets market. Â
Covid 19: 2020
In 2020, Covid-19 lockdowns led to an 11% decline in the market for diesel generator sets. Â
But the pain wasn't felt equally. As more businesses and people became reliant on digital tools to work through lockdowns, the growing data center sector helped to protect the market at higher power ratings. Â
At ratings below 1500 kVA, the global market declined around 15% in 2020.
At ratings above 1500 kVA, the global market declined only around 6%.
Across the regions, markets for diesel generator sets in North America and China were relatively unaffected, with low single digit declines, thanks largely to strong data center activity. Â
But India and South East Asia declined around 20% and Latin America almost 40%.
Covid-19 was a relatively short shock to the market. Recovery was quick and the world market was back at pre-Covid levels by 2021, although it was 2022 before Latin America, South East Asia and India fully recovered.
Covid-19 Downturn
2019 = 100
Source: Genstat from Parkinson Associates. GDP data from World Bank national accounts data, and OECD National Accounts data files. Â
The Covid-19 downturn was a short shock with rapid market recovery. Â
Looking AheadÂ
The last 25 years have produced 4 significant global downturns, an average of one around every 6 years.
There's enough volatility in the world now to at least match or even surpass the events that led to many of the downturns that we've seen above. Â
But the diesel generator sets industry is in a different place today.
There's much more in-region production. Most global producers have production facilities spread across the world, close to customers and close to suppliers. There's more trade between countries and it's often across shorter distances and working within favorable trade agreements.  Â
The world is more electrified today than 10 or 20 years ago and tolerance of power outages is low. A source of standby power is now a more critical need.
The data center sector has been a game-changer for the industry.Â
In early - mid 2025, there's some talk that the data center sector in North America may start to cool off due to the risk of supply chain issues with steel and hardware. But it's still to early to see this in the market data. Â
Through 2025 and beyond we will be closely monitoring industry activity each quarter for any evidence of changes in market demand, with analysis at country level across 12 power bands. Â
Insights on Opportunity for Producers of Diesel Generator Sets
To find out more about this study, contact us at at enquiries@parkinsonassociates.com
Parkinson Associates publish an opportunity database, Genstat, available quarterly and annually, for diesel generator sets, split by 12 power bands for every country. Click here to find out more.
To find out more about our research in the diesel generator set industry, click here Â
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