SEG Earnings: Real Numbers
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Real UK SEG export earnings for different system sizes and tariffs: 3kW system (60% exported without battery): Standard SEG 4.1p: £95/yr. Octopus Outgoing 4.1p: £95/yr. Octopus Flux 15p: £345/yr. 4kW system (60% exported): Standard 4.1p: £125/yr. Octopus 4.1p: £125/yr. Flux 15p: £460/yr. 6kW system (65% exported): Standard 4.1p: £195/yr. Octopus 4.1p: £195/yr. Flux 15p: £715/yr. WITH BATTERY (25% exported): 4kW + battery, Standard: £50/yr. Flux: £190/yr. PLUS tariff arbitrage savings: £200-£350/yr extra. CRITICAL INSIGHT: Self-consumption saves 24.5p/kWh. Export earns 4-15p/kWh. Every kWh used directly is worth 2-6x more than exporting it. Maximise self-consumption FIRST; export is the bonus. Sources: Ofgem SEG supplier list (ofgem.gov.uk), Octopus Energy tariff rates, PVGIS generation data (re.jrc.ec.europa.eu).
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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.
Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.
From our sister site Home Heat Pump Guide
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