Mark Group

Experts in energy efficiency

Mark Group is a national company, with over 1,400 employees, dedicated to providing a 'whole house' solution to energy-efficiency. Founded in 1974, Mark Group has already helped to make more than two million homes more energy-efficient, currently installing around 6,000 insulation measures every week

Our services are tailored for homeowners as well as builders, architects, local authorities and government bodies.

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  Cavity Wall Insulation

  • Typically installed from £99^†
  • You could save up to £110 per year*

  More on Cavity Wall Insulation »

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  Loft Insulation

  • Typically installed from £99^†
  • You could save up to £145 per year*

  More on Loft Insulation »

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  Solar Electricity

  • Installed from £4,000 per kWp**
  • Returned £418 per kWp each year for 25 years, index linked and tax free**

  More on Solar Electricity »

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  Solar Hot Water

  • Installed from £4,000
  • Save up 50%-70% of your annual hot water bill every year

  More on Solar Hot Water »

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* Source: Energy Savings Trust website
** Cost of system, kWp outputs and returns are for illustration purposes only based on a domestic installation and could change depending on size of system, site, location and usage patterns.
† Subject to survey. Terms and conditions apply.