I beg to move,
That leave be given to bring in a Bill to reduce the duty charged on renewable liquid heating fuel; to provide for the imposition of obligations on suppliers of heating fuel in relation to the supply of renewable fuel; and for connected purposes.
Although, obviously, no ten-minute rule Bill can compete with Prime Minister’s questions for the attendance of hon. Members, I have been heartened by the extraordinary expressions of support I have had for this proposed legislation from Members from all parts of the House. In addition to those who have agreed to sponsor the Bill, others have offered support in taking it forward, including my right hon. Friend the Member for Ludlow (Philip Dunne), the Chair of the Environmental Audit Committee; my hon. Friend the Member for North East Bedfordshire (Richard Fuller); and my hon. Friend the Member for Ynys Môn (Virginia Crosbie).
It is no surprise that the Bill should have such support, for 1.7 million homes in the UK are off the gas grid—about 1.1 million in Great Britain and a further 600,000 in Northern Ireland. They are mainly in rural communities and they mostly rely on kerosene boilers for their heating. As we chart a course towards net zero, finding a low-carbon solution for these homes is going to be incredibly important. In 2017, the Government introduced the green growth strategy, which concluded that there should be a concept of electrification first in respect of such homes. That mantra has been repeated in consultations since, and in 2017 the Government also indicated that they wanted to seek to remove boilers from off-grid homes in these rural communities after 2026.
More recently, the heating and building strategy in 2021 and two associated consultations on homes off the gas grid moved further, saying that there should be a heat pump first strategy. The Government propose that, from 2026, the installation of replacement boilers will be banned in those off-grid properties and instead households in those rural communities will be forced to have either air source heat pumps or ground source heat pumps. Don’t get me wrong: there is a role for both air source and ground source heat, and I am a supporter of those technologies. Indeed, Cornwall has impressive geothermal resources and companies such as Kensa, which is a national market leader in this technology.
However, there are some drawbacks to air source heat pumps in particular, and that technology is not right for everyone. The capital cost is very high; at about £12,000, it is at least three times the cost of a new boiler. In some coastal areas, the equipment can be prone to decay and rusting. It also requires a lot of additional insulation in homes, with which comes a lack of ventilation. In some old properties, an associated problem of increased insulation is an increased risk of mould and the health problems that come from that.
The Bill would establish a better path towards decarbonising our energy in these off-grid homes, because the technology now exists to adapt existing boilers to run not on kerosene but on hydrotreated vegetable oil, a renewable fuel derived from waste. The adaptation to the boilers is very modest, involving a small change to a nozzle, an adjustment in the pressure and sometimes a clean of the tank. The cost of the adaptation is no more than a few hundred pounds. The Government’s work in this area on their standard assessment procedure for building energy efficiency—the so-called SAP document—shows that switching to HVO as opposed to kerosene would lead to an 88% reduction in greenhouse gas emissions, which would be an extraordinary achievement.