Howeowners should be helped to find ways to make their homes more energy efficient an expert has said.
Mr Miller explained that some homeowners are unsure of how particular gadgets and technologies work and do not know who can help to fit them.
"It goes back to finding peoples trigger point that will see them engage with the debate and act," he said, suggesting that environmental concerns and money may motivate people.
"Whatever works - and each [issue] will for different people - is where the focus needs to be," he added.
Investing in the green economy is a hot topic for many organisations, as this week the United Nations called for 2% of the worldwide income to be invested into reducing greenhouse gasses.