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HVO Transition plan – 6 months later, how we have adapted

Author: Max Allum

22 October 2022

The switch to HVO green Fuell – 6 months on.


6 Months ago since 1st April 2022, all our generator powered equipment has been supplied with HVO Green fuel. The law changed making it no longer legal to use red diesel for non-road mobile machinery including mobile generators on construction sites. In order to comply with this government legislation. We now supply our units with a tank of Green D+ HVO (Enhanced Hydrotreated Vegetable Oil). We have been doing so now since before April as a white diesel replacement. This is a fossil-free, paraffinic fuel made from 100% renewable materials.

What is Green D+ HVO Fuel?

Green D+ HVO (Enhanced Hydrotreated Vegetable Oil), is a fossil-free, paraffinic fuel made from 100% renewable materials. A drop-in replacement for Diesel. It is a more sustainable, high-quality fuel. Produced from waste fats and vegetable oils. The fats are transformed into biofuel by hydrogenation.

How we’ve adapted.


We of course had to let our customers know of this change. We had to make them aware that after the 1st of April 2022 every unit leaving the depot will have been supplied with a full tank of Green D HVO. This ensures both the customer and Davlav are compliant with the new legislation. When returning a unit, customers are now asked to ensure the tank is replenished with Green D HVO or white diesel. We help out our customers letting them know the getting green fuel is easy. Our units carry supply boxes of HVO and if customers need more they can just call and we will have more with them within 24 hours.


To ensure we are receiving tanks that have not been contaminated with any red fuel we test our units as part of our off hire procedure. Whilst in a customers care, if a unit comes back with red diesel in the tank. Or if our tests find it has been contaminated with red diesel , we charge a cleaning fee to:

  • Empty the tank
  • Dispose of the red diesel
  • Clean the tank
  • Flush the engine
  • Change the engine filters

This should hopefully help to further encourage customers to not use any red fuel.

So far this project has been a success and we have transitioned from red to green fuel smoothly.


This is just one of many changes we have been making in a bid to be more green and environmentally friendly. You can read about some of our other efforts in blogs posts such as:

Going green – our goal to become carbon neutral