Octopus Cosy and Solar

By Home Solar Guide Team||guide
Independently written | Evidence-based | Sources cited
Octopus Cosy solar
Octopus Cosy: cheap electricity for heat pump hours. Combined with solar: ultra-low heating.

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Is 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: 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.

air source heat pump guide

Learn more about how air source heat pumps work alongside solar panels.

From our sister site Home Heat Pump Guide

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