Octopus Tariffs

Air source, ground source and associated systems for heating homes
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Krill
Posts: 311
Joined: Fri Sep 02, 2022 4:38 pm

Re: Octopus Tariffs

#61

Post by Krill »

Rich, Cosy plus OO fixed is absolutely better than Flux unless one can maximise the high rate export.

But I expect the fixed outgoing rate to drop soon, and you need a heat pump to be on Cosy.
Solar PV: 6.4kW solar PV (Eurener MEPV 400W*16)
PV Inverter: Solis 6kW inverter
Batteries: 14.4kWh LiFePO4 batteries (Pylontech US5000*3)
Battery Inverter: LuxPowertek 3600 ACS*2 battery inverter
WBS: 8kW Hunter Avalon 6 Multifuel burner (wood only)
dan_b
Posts: 1962
Joined: Tue Jun 15, 2021 10:16 am
Location: SW London

Re: Octopus Tariffs

#62

Post by dan_b »

Crikey - with this weekends renewables glut my daily tariff today has fallen to 11p. I’m not sure what to do as I did loads of washing yesterday when it was 15p!
Tesla Model 3 Performance
Oversees an 11kWp solar array at work
NoraBatty
Posts: 103
Joined: Sat Mar 23, 2024 10:40 am

Re: Octopus Tariffs

#63

Post by NoraBatty »

Ive had sub 5p per kwh electricity since midnight.
Currently slow roasting a lamb, heating the house, and doing wash loads whilst the o/h cuts the grass, and getting paid 5p/kwh.
With all of that, we are struggling to use a ton of electricity. But have so far used 18.4kwh today.
Solar generation is actually hampering the situation, as we are using that instead of exporting at 15p and importing at negative cost.
Battery set up cannot happen soon enough.
Image
2.7kw Canadian solar. roof. 3kw solis G98 mcs
12kw midea ASHP
200l hot water
3152W RE, Whitelaw Brae
Octopus agile/outgoing fixed 15p

Planned;
Hybrid system
43kwh eve batteries, 3x16 280A
6-8+kw solar, DC connected.
dan_b
Posts: 1962
Joined: Tue Jun 15, 2021 10:16 am
Location: SW London

Re: Octopus Tariffs

#64

Post by dan_b »

Just had a look at our first month’s bill on Shape Shifters and trying to work out if it’s saving the business money vs the normal tariff– looks like it is.

Rate Consumption Cost
Overnight cheapest rate - 15.65p/kWh 639.6 kWh £100.091
Daytime low rate - 17.33p/kWh 1486.0 kWh £257.519
4-7pm peak rate - 34.50p/kWh 194.3 kWh £67.034

Total consumption 2319.8kWh at an average rate of 18.30p/kWh - £424.64
Standing charge at £2/day.
Our previous tariff was 25p/kWh and a standing charge of £3/day,

so I think we've saved £150 on the lower tariff, and a further £30 on the lower standing charge- so a reduction in our bills of £180 in one month .


(We have also earned about £45 in April for the 300kWh of excess solar power exported to the grid)
Tesla Model 3 Performance
Oversees an 11kWp solar array at work
dan_b
Posts: 1962
Joined: Tue Jun 15, 2021 10:16 am
Location: SW London

Re: Octopus Tariffs

#65

Post by dan_b »

As I'm a nerd, I've just crunched the numbers on May and June since switching to Octopus Shape Shifters, and again there's a not insignificant saving of £175 and £155 for those months respectively vs if we had stayed on the flat rate tariff.

If that carries on across the year, that will have reduced our electricity costs by about £2k - not to be sniffed at!
Tesla Model 3 Performance
Oversees an 11kWp solar array at work
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