34 APPROACHES TO HEATING & RENEWABLES FOR THE FUTURE HOMES STANDARD ROUND TABLE REVIEW
HEATING SOLUTIONS FOR ALL NEW HOMES
The varied experience of delegates (with representatives from academia, the product supply chain, housebuilding and industry bodies) helped provide a rich set of perspectives on strategies for complying with heating and renewables requiremements of the new Standard
critiqued the lack of focus on battery storage in the document, Jones’ asserted that future proofi ng was essential for example to tackle future demands on the grid. “If the Government decided it needed all electricity generated on sites, in that scenario somebody has to go back and change things.” Nathan Tranter, of sponsor Panasonic Heating & Ventilation, said that the solution to balancing demand was for “everything to speak each other – the heat pump speaks to the tumble dryer.” This Internet Of Things-based ‘Home Energy Management Systems’ approach is already happening, he said, adding that the industry was awaiting energy providers releasing an API (Application Programming Interface) “which will speak to the grid, and say ‘we are producing too much electricity, let’s dump some in the batteries.” He said it was already happening in Germany, and “wasn’t far away.” Mike Jones of Garo Electric said that “every new build should have battery storage,” however this sort of prescription was currently absent in the Future Homes Standard. Ian Pritchett of Greencore Homes said that the “challenge with future proofi ng is the future keeps changing, and it’s changing quite fast at the moment.” He gave the example of exported energy prices being substantially higher for some homeowners selling back to the grid than the 13p per unit commonly quoted. Pritchett added: “We’ve got to think about houses completely differently, it’s not just about load shifting and storing energy, they will become income generators as well.” Meanwhile, Mike Leonard of Birmingham University said that the long view on PVs for homeowners meant looking at “what’s the product’s life span, does it
have to be changed – and what is the embodied carbon of that?”
Underfl oor heating Ronny Reeves of sponsor WMS asked the group whether, if the Standard was “genuinely about reducing carbon emissions and cutting energy bills for homeowners,” not just hitting a “target number,” the sector should be looking to move to specifying lower temperature water for heating homes. “If air source heat pumps deliver a far higher SCOP (Seasonal Coeffi cient of Performance) at 35-45°C than at 55°C, should we be designing and building to lower temperatures?” Reeves said that his fi rm’s goal was to work with the sector to drive
up effi ciency, and added that the ‘buildability’ of the UFH solution for volume housebuilders was evidenced by Barratt Redrow having recently adopted it on ground fl oors in many of its developments, following testing at Energy House 2.0 in Salford. A report from the Energy House chamber test countered ideas that lower water temperatures necessitated oversized radiators upstairs (the UFH increased the temperature on the level above too). Jonathan Cheng of Dandara offered the potential hiccup for mainstream adoption, that people still “view underfl oor heating as a premium product.” He added: “In one sense that’s a good thing for the housebuilder, because the homeowner expects to pay more for it, but the cost to the house builder has become more comparable.” Ronny Reeves said the cost of UFH was coming down as volume of spec increases, while asserting that the cost of radiators was increasing. He asserted the cost was offset by “added benefi ts for the
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