Contractors are already accruing costs for their carbon emissions under the Carbon Reduction Commitment Energy Efficiency Scheme.
PwC carbon reporting specialist Henry Le Fleming said although cash will be not paid under the scheme, which penalises firms with high emissions, until 2012, data from April this year will contribute to the final figure.
Last Friday was the deadline for the estimated 3,000 com-panies obliged to report under the scheme to submit their calculations of their use of electricity, gas, diesel and coal for all of their sites.
Mr Le Fleming told H&V News most companies had made preparations to lodge their reports but said the question was whether they could provide the right type of detail.
“We think most people are aware of their obligations but it might be that they have not dotted every ‘i’ and crossed every ‘t’,” he said.
Major contractors including Balfour Beatty, Carillion and Morgan Sindall are registered under the scheme.
The Department of Energy and Climate Change stated that organisations must register for the scheme if they (and their subsidiaries) have at least one half-hourly electricity meter settled on the half-hourly market.
It said: “Organisations that consumed more than 6,000 MWh per year of half-hourly metered electricity during 2008 qualify for full participation and register with the Environment Agency, who is the administrator for the scheme.”
Late submissions will face a £5,000 fine for each report, plus £500 a day every day it is outstanding. Inaccuracies in reporting can attract fines of £40 per tonne of CO2 for under or overreporting.
PwC said for an organisation spending £20m on energy, a 20 per cent mistake would result in fines of £1m.