Efficient Gas Boiler and Climate Control
@showpiece.bsky.social
Goals:
1. Climate comfort - where you can’t tell whether heating is on or off and you feel comfortable
2. Efficient boiler to minimise costs and pollution
GitHub:
https://github.com/Alexwijn/SAT/discussions/40
1. Climate comfort - where you can’t tell whether heating is on or off and you feel comfortable
2. Efficient boiler to minimise costs and pollution
GitHub:
https://github.com/Alexwijn/SAT/discussions/40
Electricity / Gas Unit Cost Ratio Comparison
[9 days, 17 Jan 2026 – 25 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.34×
Electricity: £0.2557
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.48×
Electricity: £0.2589
Gas: £0.0579
[9 days, 17 Jan 2026 – 25 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.34×
Electricity: £0.2557
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.48×
Electricity: £0.2589
Gas: £0.0579
January 26, 2026 at 5:06 AM
Electricity / Gas Unit Cost Ratio Comparison
[9 days, 17 Jan 2026 – 25 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.34×
Electricity: £0.2557
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.48×
Electricity: £0.2589
Gas: £0.0579
[9 days, 17 Jan 2026 – 25 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.34×
Electricity: £0.2557
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.48×
Electricity: £0.2589
Gas: £0.0579
January 26, 2026 at 5:06 AM
Electricity / Gas Unit Cost Ratio Comparison
[8 days, 17 Jan 2026 – 24 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.25×
Electricity: £0.2504
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.49×
Electricity: £0.2593
Gas: £0.0577
[8 days, 17 Jan 2026 – 24 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.25×
Electricity: £0.2504
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.49×
Electricity: £0.2593
Gas: £0.0577
January 25, 2026 at 5:06 AM
Electricity / Gas Unit Cost Ratio Comparison
[8 days, 17 Jan 2026 – 24 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.25×
Electricity: £0.2504
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.49×
Electricity: £0.2593
Gas: £0.0577
[8 days, 17 Jan 2026 – 24 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.25×
Electricity: £0.2504
Gas: £0.0589
Mean:
Spark-Gap Tracker: 4.49×
Electricity: £0.2593
Gas: £0.0577
January 25, 2026 at 5:06 AM
Electricity / Gas Unit Cost Ratio Comparison
[7 days, 17 Jan 2026 – 23 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.39×
Electricity: £0.2554
Gas: £0.0582
Mean:
Spark-Gap Tracker: 4.53×
Electricity: £0.2606
Gas: £0.0576
[7 days, 17 Jan 2026 – 23 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.39×
Electricity: £0.2554
Gas: £0.0582
Mean:
Spark-Gap Tracker: 4.53×
Electricity: £0.2606
Gas: £0.0576
January 24, 2026 at 5:13 AM
Electricity / Gas Unit Cost Ratio Comparison
[7 days, 17 Jan 2026 – 23 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.39×
Electricity: £0.2554
Gas: £0.0582
Mean:
Spark-Gap Tracker: 4.53×
Electricity: £0.2606
Gas: £0.0576
[7 days, 17 Jan 2026 – 23 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.39×
Electricity: £0.2554
Gas: £0.0582
Mean:
Spark-Gap Tracker: 4.53×
Electricity: £0.2606
Gas: £0.0576
January 24, 2026 at 5:13 AM
Electricity / Gas Unit Cost Ratio Comparison
[6 days, 17 Jan 2026 – 22 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.13×
Electricity: £0.2469
Gas: £0.0597
Mean:
Spark-Gap Tracker: 4.55×
Electricity: £0.2615
Gas: £0.0575
[6 days, 17 Jan 2026 – 22 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.13×
Electricity: £0.2469
Gas: £0.0597
Mean:
Spark-Gap Tracker: 4.55×
Electricity: £0.2615
Gas: £0.0575
January 23, 2026 at 5:08 AM
Electricity / Gas Unit Cost Ratio Comparison
[6 days, 17 Jan 2026 – 22 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.13×
Electricity: £0.2469
Gas: £0.0597
Mean:
Spark-Gap Tracker: 4.55×
Electricity: £0.2615
Gas: £0.0575
[6 days, 17 Jan 2026 – 22 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.13×
Electricity: £0.2469
Gas: £0.0597
Mean:
Spark-Gap Tracker: 4.55×
Electricity: £0.2615
Gas: £0.0575
January 23, 2026 at 5:08 AM
Electricity / Gas Unit Cost Ratio Comparison
[5 days, 17 Jan 2026 – 21 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.56×
Electricity: £0.2507
Gas: £0.0550
Mean:
Spark-Gap Tracker: 4.64×
Electricity: £0.2644
Gas: £0.0570
[5 days, 17 Jan 2026 – 21 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.56×
Electricity: £0.2507
Gas: £0.0550
Mean:
Spark-Gap Tracker: 4.64×
Electricity: £0.2644
Gas: £0.0570
January 22, 2026 at 5:09 AM
Electricity / Gas Unit Cost Ratio Comparison
[5 days, 17 Jan 2026 – 21 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.56×
Electricity: £0.2507
Gas: £0.0550
Mean:
Spark-Gap Tracker: 4.64×
Electricity: £0.2644
Gas: £0.0570
[5 days, 17 Jan 2026 – 21 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.56×
Electricity: £0.2507
Gas: £0.0550
Mean:
Spark-Gap Tracker: 4.64×
Electricity: £0.2644
Gas: £0.0570
January 22, 2026 at 5:08 AM
Electricity / Gas Unit Cost Ratio Comparison
[4 days, 17 Jan 2026 – 20 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.57×
Electricity: £0.2555
Gas: £0.0559
Mean:
Spark-Gap Tracker: 4.66×
Electricity: £0.2678
Gas: £0.0575
[4 days, 17 Jan 2026 – 20 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.57×
Electricity: £0.2555
Gas: £0.0559
Mean:
Spark-Gap Tracker: 4.66×
Electricity: £0.2678
Gas: £0.0575
January 21, 2026 at 5:10 AM
Electricity / Gas Unit Cost Ratio Comparison
[4 days, 17 Jan 2026 – 20 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.57×
Electricity: £0.2555
Gas: £0.0559
Mean:
Spark-Gap Tracker: 4.66×
Electricity: £0.2678
Gas: £0.0575
[4 days, 17 Jan 2026 – 20 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.57×
Electricity: £0.2555
Gas: £0.0559
Mean:
Spark-Gap Tracker: 4.66×
Electricity: £0.2678
Gas: £0.0575
January 21, 2026 at 5:10 AM
E3G’s breakdown: save ~£150 (remove levies from electric heating) + ~£90 (power market reform) + ~£140 (better SCOP 2.8>3.5) + ~£175 (off-peak via smart-ready). £930-£555≈£375. Compare gas £820: ~£445 cheaper.
January 20, 2026 at 12:31 PM
E3G’s breakdown: save ~£150 (remove levies from electric heating) + ~£90 (power market reform) + ~£140 (better SCOP 2.8>3.5) + ~£175 (off-peak via smart-ready). £930-£555≈£375. Compare gas £820: ~£445 cheaper.
E3G’s “~£375/yr heat pump bill” isn’t today, it’s a future potential scenario. They start from £930/yr (2025 price cap heat pump) and apply 4 policy/market changes to cut running costs.
January 20, 2026 at 12:31 PM
E3G’s “~£375/yr heat pump bill” isn’t today, it’s a future potential scenario. They start from £930/yr (2025 price cap heat pump) and apply 4 policy/market changes to cut running costs.
Electricity / Gas Unit Cost Ratio Comparison
[3 days, 17 Jan 2026 – 19 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.91×
Electricity: £0.2853
Gas: £0.0581
Mean:
Spark-Gap Tracker: 4.68×
Electricity: £0.2719
Gas: £0.0581
[3 days, 17 Jan 2026 – 19 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.91×
Electricity: £0.2853
Gas: £0.0581
Mean:
Spark-Gap Tracker: 4.68×
Electricity: £0.2719
Gas: £0.0581
January 20, 2026 at 5:10 AM
Electricity / Gas Unit Cost Ratio Comparison
[3 days, 17 Jan 2026 – 19 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.91×
Electricity: £0.2853
Gas: £0.0581
Mean:
Spark-Gap Tracker: 4.68×
Electricity: £0.2719
Gas: £0.0581
[3 days, 17 Jan 2026 – 19 Jan 2026]
Yesterday:
Spark-Gap Tracker: 4.91×
Electricity: £0.2853
Gas: £0.0581
Mean:
Spark-Gap Tracker: 4.68×
Electricity: £0.2719
Gas: £0.0581
January 20, 2026 at 5:10 AM
Amazing performance today. Tight heat control reduced wasted heat. The DHW cycle was the worst disturbance to room temperature stability today 🔥
gasboiler.grafana.net/public-dashb...
gasboiler.grafana.net/public-dashb...
January 19, 2026 at 9:08 PM
Amazing performance today. Tight heat control reduced wasted heat. The DHW cycle was the worst disturbance to room temperature stability today 🔥
gasboiler.grafana.net/public-dashb...
gasboiler.grafana.net/public-dashb...
January 19, 2026 at 7:05 AM