Octopus Cosy and Solar
Want to know what system suits this tariff?
Export tariffs pay very differently depending on your system size and whether you have a battery. See what setup would actually earn you the most at your home.
Size a System for This TariffFree. Uses your postcode and usage — no phone number needed.
Want to know what system suits this tariff?
Export tariffs pay very differently depending on your system size and whether you have a battery. See what setup would actually earn you the most at your home.
Size a System for This TariffIs Octopus Cosy good with solar?
Octopus Cosy is designed for heat pump owners: CHEAP PERIODS: discounted rates during typical heat pump running hours (morning warm-up, evening). PEAK AVOIDANCE: higher rates during 4-7pm peak (when grid demand is highest). WITH SOLAR: (1) Solar covers heat pump electricity during daylight hours (free). (2) Cosy cheap rates cover morning and evening heat pump use (discounted). (3) Battery stores solar for peak hours (avoids expensive 4-7pm rates). RESULT: the cheapest possible heating combination — free from solar during the day, discounted from Cosy morning/evening, peak avoided by battery. Annual heating cost: potentially £100-£250 (vs £800-£1,200 on gas).
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Related guides
Related: Home Heating Systems
Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.
Learn more about how air source heat pumps work alongside solar panels.
From our sister site Home Heat Pump Guide
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Want to know what system suits this tariff?
Export tariffs pay very differently depending on your system size and whether you have a battery. See what setup would actually earn you the most at your home.
Size a System for This TariffFree. Uses your postcode and usage — no phone number needed.