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Retrofit carbon emission reductions

Greentomatoenergy claims to have cut the carbon emissions and heating expenditure by 80 per cent in two Victorian terraced houses in London.

The firm’s “passive house energy levels” have helped transform draughty accommodation into warmer places to live, with a series of innovative techniques.

The firm took just under a year to put in superinsulated walls, triple-glazing, a ground-to-air heat exchange system, solar thermal and solar power panels, draught-proofing and various design features meant to cut down on condensation and thermal bridging.

This comes as the Government issues its draft plan on carbon, which states: “Almost half of the UK’s greenhouse gas emissions are from the energy used to generate heat, with the vast majority of our homes still relying on fossil fuel-powered gas boilers and with much of our building stock still poorly insulated and inefficient.

“There is a huge opportunity here, not only to cut greenhouse gas emissions and emissions of harmful pollutants, but also for households and businesses to save money, with the most significant and cost-effective opportunities likely to come from better insulation and from replacing inefficient heating systems.”