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What is the load factor on a COP of diesel generator?

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ISO-8528-1 states that a COP-rated generator set must provide power for an unlimited number of hours per year under the agreed operating conditions subject to maintenance levels. No overload is dictated by the ISO standard. Just like the LTP rating, ISO-8528-1 allows the 24-hour average load factor to be up to the full COP rating. Typically, this is around 70% of the Prime Rating or PRP.

If you don’t need to supply power at a fixed load? Consider some of the other ISO 8528-1 Rating:

What alternative ratings are there to Continuous Power?

If the Prime Power Rating doesn’t suit your requirements, you can consider buying a generator at an  Emergency Standby Power (ESP), Prime Power (PRP), or Limited-Time Running Prime (LTP) rating.

Ke Wong

Ke Wong

Hey, I’m Ke Wong joined WALT POWER in 2011. I spent a dozen years focused on generator set & load bank technology and solutions for the power & energy industry. WALT Power is a reliable & leading manufacturer & supplier in China, as a business director, I am so proud of our knowledge is more and more popular not only for engineers, and generator distributors but also for end-users. Hope you are enjoying our article, if any questions or comments welcome to send me sales at

Ke Wong

Hi, I’m the author of this post, and also the business director of WALT Power. I have been in this field for more than 17 years. If you want to know more about the generator set or services, please just feel free to contact me any time.

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