25 Sep - 3 Oct 2021
Saturday 25th 11.00 - 4.00pm
Parking, access, special instructions
Park in Bon Accord Road. Ring the front door bell to let us know you have arrived. Make your way to the back entrance in Southcliffe Road.
Once you have visited our property you can walk down Southcliffe Road and visit two other Open Greener Homes.
Just turn up see below
Whilst building an extension we decided to add solar heating to supplement a new boiler. This has been in place since 2009 and has meant we can turn the boiler off for most of the summer. The systems does require draining and refilling about every 5 years and is still working very well. The techy bit – Vaillant Solar Sytem (twin turoTHERm exclusiv tubes) with 210ltr auroSTOR unvented cylinder and Vaillant ecoTEC plus gas boiler)
In 2014 we decided to look more closely at electrical costs and initially changed almost all lights to LEDs, We had a spreadsheet to help calculate which lights to change and what the “pay-back” time might be. Turned out to be easy to do, except for changing the 12v halogen kitchen lights which needed new fittings, and cost recovery was slightly quicker than expected.
In 2015 we added PV panels to the roof just before the grant reduced yet again and considered an electric car but, at the time, the range wasn't sufficient relative to the cost of the cars.
With hindsight it would have been better (and cheaper!) to have added the PV panels with the extension and used the PV to heat an immersion tank. We did consider it when adding the PV but decided to keep it as it works well and is cheap to run.
In late 2018 we reconsidered an all electric car (BEV) as the range had improved and bought the first one (BMW i3 with a 38kWh battery and a range of 160-200 miles) in May 2019. To charge it we installed a 7kW Zappi in the garage. The Zappi allows you to choose how much power you take from the PV system and the grid. We have it set to take 100% from the PV and nothing from the grid! In the first 2 years we have put 1356kWhs into the car so have had almost cost free power for 12K miles!
The other trick with charging a BEV is to find chargers with free electricity, although a lot of these are only low power (7kW) but some are fast 50DC chargers. That way you still get free miles!
We got rid of the other petrol car in May and now have a Hyundia Kona with a 64kWh battery and a range of 240-300 miles. We plan journeys so at least one car has enough range for more local trips so the Zappi feeds each car as needed.
Finally, we have a battery electric hedge trimmer and strimmer so the only petrol machines left are a chain saw and mower – both reasonable new and working well so little point in changing them.