Consultants ⋅ Engineers ⋅ Project Managers

We combine expertise in environmentally efficient combustion technology with detailed engineering capability to deliver economically sustainable power.

A critical question faces our society – can we afford to deliver green energy?

As one in a range of environmentally friendly energy sources, biomass is the term used to describe a group of renewable fuels that are already widely available. Its production and use bring environmental and social benefits and, if correctly managed, biomass is a sustainable fuel source that can deliver a significant reduction in net carbon emissions compared with fossil fuels.

However, to successfully deliver a biomass power plant, a team is required that includes technical experts in combustion technology; engineering expertise in power plant design and construction; environmental scientists; commercial and regulatory experts and project management professionals. McLellan engineers have worked on many types and sizes of installations utilising a variety of fuels. The installations have ranged in size from 1 MW up to 30MW using fuels as diverse as chicken litter, landfill gas and wood chip/pellet. McLellan has significant knowledge relating to the choice of engines (reciprocating and turbine) and alternators. Our experience and skills also cover the necessary design submissions to connect the power plant to the National Grid plus the design and specification of the electrical transformers and switch gear.

Leading edge combustion technology expertise

McLellan works with industry, businesses and public bodies to engineer and deliver major complex assets.

Biomass combustion has to consider a range of key factors:

  • Practical calorific value
  • Handling bulky materials
  • Waste generated
  • Gasses released into atmosphere
  • Long term availability of the biomass
  • Maintenance of the plant

An experienced and expert engineering design resource

Using our core electrical, mechanical and civil engineering expertise, we are able to design all aspects of a biomass fuelled power facility from the power train; the fuel receiving and storage facilities to the administration buildings.

Mechanical handling has a number of particular challenges as biomass fuels are typically materials that:

  • Usually have a low bulk density and are therefore more difficult to transport and store
  • May have poor flow characteristics
  • May be friable when dry and/or degrade when wet
  • May present dust explosion risks
  • May be liable to heat build-up in the stored mass

Wide ranging capability in environmental science

Although biomass is an ‘environmentally sourced’ fuel, waste and emissions from its combustion process need to be controlled and are subject to regulation and planning permission requirements.

McLellan is experienced in emission dispersion modelling as well as with supporting clients in the planning submission process.

Commercial and regulatory expertise to ensure successful projects

Our cross-sector expertise gained over many years from a wide range of projects enables us to provide design and engineering consultancy services that are focused on maximising safety and reliability, whilst minimising environmental impact and optimising cost. These include:

  • Energy optimisation studies
  • Fuel and utilities advice
  • CO2 emissions reduction advice
  • Carbon footprint calculations
  • Waste minimisation studies
  • Advice on renewable energy installations
  • Energy and environmental audits
  • Advice on government incentives and environmental regulations
  • Environmental impact assessments