GB Grid — Price × Carbon Intensity

Live

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Are electricity prices really cheaper when the carbon intensity of the grid is lowest?

Regen have developed this dashboard to track the correlation between grid carbon intensity and electricity prices over time. Select a time period, or a specific day. Octopus Agile prices are shown alongside GB wholesale market index prices (Elexon BMRS) for comparison. Please be patient while data loads.

Period

Fetching data…

Current Agile Price

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p / kWh inc. VAT

Period Avg (Agile)

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p / kWh

Day-Ahead Price

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p / kWh (IMRP, £/MWh ÷ 10)

Carbon Intensity

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g CO₂eq / kWh

Period Min (Agile)

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p / kWh

Negative Slots

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half-hour periods

Price–Carbon correlation

Agile Tariff vs GB Carbon Intensity

Each dot = one 30-min slot

↙ cheap & clean | dirty ↗

cheap

expensive

Price: Octopus Energy Agile Tariff — api.octopus.energy · Carbon: National Grid ESO Carbon Intensity API — carbonintensity.org.uk

Pearson's r

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Octopus Agile price vs carbon

R²

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Variance explained

p-value

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p < 0.05 = significant

Correlation

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Wholesale Reference Price (Day Ahead) vs GB Carbon Intensity

Each dot = one 30-min slot

↙ cheap & clean | dirty ↗

cheap

expensive

Price: LCCC IMRP Actuals (GB Day Ahead Hourly Price, EPEX Spot & Nord Pool weighted avg) — dp.lowcarboncontracts.uk · Carbon: National Grid ESO Carbon Intensity API — carbonintensity.org.uk

Pearson's r

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Day-ahead price vs carbon

R²

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Variance explained

p-value

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p < 0.05 = significant

Correlation

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Correlation by time period — GB

Pearson's r — GB | Octopus Agile price vs Day-ahead price

Time period	Agile r	Agile R²	Agile strength		Wholesale r	Wholesale R²	Wholesale strength

Agile price — Pearson's r vs Carbon

Period	r	R²	Strength

Day-ahead price — Pearson's r vs Carbon

Period	r	R²	Strength

Time series

Fetching live data…

Electricity Price & Carbon Intensity

Last 12 months — weekly averages

Agile p/kWh

Wholesale p/kWh

Carbon g/kWh

Cheapest slots

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Priciest slots

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Export data

Octopus Agile Tariff price

GET api.octopus.energy/v1/products/AGILE-24-10-01/…/standard-unit-rates/

Half-hourly retail electricity prices (p/kWh inc. VAT) for 14 GB DNO regions. Averaged to GB national for this dashboard.

Wholesale Reference Price (Day Ahead)

CKAN dp.lowcarboncontracts.uk/dataset/imrp-actuals

LCCC Intermittent Market Reference Price (IMRP) — GB Day Ahead Hourly Price, weighted average across EPEX Spot & Nord Pool day-ahead auctions. Hourly, converted from £/MWh to p/kWh. UK Open Government Licence. Pre-fetched server-side every 6 hours via GitHub Actions.

GB Carbon Intensity

GET api.carbonintensity.org.uk

National Grid ESO Carbon Intensity API — half-hourly g CO₂eq/kWh, GB national average.

Statistics

Pearson's r, R², OLS slope and p-value computed client-side from matched half-hourly slots. No data is sent to any server.