Some of the biggest property firms in the UK have warned that cheap energy strategies designed for shops and offices will not succeed, reports the Birmingham Post.
The government has introduced a series of measures that are designed to reduce carbon emissions and result in cheaper business energy bills in factories and offices, but the British Property Federation (BPF) has said that Energy Performance Certificates (EPCs) are unreliable.
It points out that EPCs provide details of energy use that is purely theoretical and bears little resemblance to what happens when a building is occupied.
Jon Lovell, head of sustainability at property consultancy Drivers Jonas, told the paper: "Despite the commercial benefits of energy efficiency, progress is being impeded by poor energy measurement, which is itself a symptom of poorly conceived regulation and fiscal policy."
The BPF is calling for the system to be altered so that EPCs will reflect actual energy use, rather than using an estimate based on a building's design.
EPCs are intended to give tenants a better idea of how much their energy bills will be and to encourage landlords to pursue a higher level of efficiency.
If you want to find out more about business energy and how you could save up to 50 per cent on your business energy bills, click here.