Solar Power + Solar Hot Water Systems + Insulation and Ventilation At Mark Group, we're here to save you: from rising energy costs, unnecessary greenhouse emissions, and from wasting the energy you already use. We're able to do this by embracing renewable energy wherever possible, and helping you address the three key areas that have the most impact on the way in which your home uses energy; • Solar power • Solar hot water systems • Ventilation and Insulation Our expert consultants can also suggest a range of other simple measures to help you be more energy efficient and start seeing financial savings, right away. The Mark Group currently makes nearly 7,000 homes in Australia, the United Kingdom and the USA more energy efficient every week. We are a reliable and trusted company that has been business for more than 37 years. We perform over 6,000 installations every week – and as more and more customers tell their friends about how happy they are with their solutions, this number is growing rapidly. Importantly, we only use the very best products with the best warranties and guarantees. Here in Australia, we have a head office in North Ryde Sydney, and branches in Newcastle, Wollongong and Melbourne. We currently service the Sydney Metropolitan & Regional areas, Melbourne metropolitan & Geelong areas, Newcastle, Wollongong and Brisbane.