Compounding Energy

Pricing

One price per tier, per product. No usage surprises. Cancel any time. Both products have a free tier so you can evaluate before paying.

GridSight

European electricity price, demand, and dispatch forecasting

Free

£0

Historical GB generation, settlement prices, and live accuracy. See the product's track record before paying.

  • 90 days of historical GB data
  • Live accuracy dashboard
  • Real-time generation mix
  • Carbon intensity tracking
  • No credit card required
Start free

Pro

Most popular
£79/ month

Day-ahead GB forecasts for traders, asset operators, and small desks.

  • 2-day GB forecast horizon
  • Price, generation, and carbon
  • Hourly refresh
  • Backtest access
  • 50,000 API calls / day
  • Email support
Subscribe
Coming Q3 2026

Expert

£499/ month

Full European coverage with a 10-day horizon, cross-border flows, and 15-minute refresh.

  • 10-day forecast horizon
  • GB + 7 European zones (FR, DE, NL, BE, IE, NO2, DK1)
  • Cross-border HVDC flow forecasts
  • 15-minute refresh cadence
  • Unlimited API calls + API keys
  • Priority support
  • Full backtest access
Join the waitlist

Expert tier unlocks when the European unit-commitment model goes live. Waitlist members get first access and founding pricing.


Compound Vision

Wind and solar power forecasting — 7,979 farms, physics-based

Free

£0

Explore the platform with a sample of public farms. See how the physics engine works before committing.

  • 10 sample farms (wind + solar)
  • 7-day forecast horizon
  • P50 point forecast only
  • 3D CesiumJS globe viewer
  • No credit card required
Start free

Pro

Most popular
£249/ month

Full access to all 7,979 public farms with probabilistic bands, 16-day horizons, and daily refresh.

  • All 7,979 public farms (1,667 wind + 6,312 solar)
  • 16-day forecast horizon
  • P10 / P25 / P50 / P75 / P90 bands
  • Daily forecast refresh
  • ISO region aggregates
  • CSV + JSON export
  • Email support
Subscribe

Expert

£999/ month

Everything in Pro plus custom farm CRUD, full REST API, up to 4× daily refresh, and priority support.

  • All public farms + custom farm CRUD
  • Add your own wind and solar assets
  • Full REST API with JWT + API key auth
  • Up to 4× daily refresh (aligned to NWP cycles)
  • On-demand per-farm forecast trigger
  • EIA Form 860 backfill for missing assets
  • Unlimited API calls
  • Priority support
Contact sales

Use both products?

If you need both GridSight and Compound Vision at Expert tier, get in touch for a bundled rate. We’ll put together a package that makes sense for your use case.

Contact us for bundle pricing

FAQ

How accurate is GridSight?

£31/MWh MAE on 10-day GB day-ahead, £15 better than climatology. Full numbers on the GridSight product page — updated with every nightly retrain.

What happens if a retrain degrades accuracy?

We gate every retrain on a regression check. If the new model fails any threshold — MAE, calibration, train/test ratio — we automatically roll back and keep serving the previous model.

Is Compound Vision ML or physics?

Pure physics. Monin-Obukhov atmospheric stability, manufacturer power curves, Perez irradiance transposition, and 30+ other documented steps. No black-box ML. When a forecast is wrong, you can trace exactly which physical step caused it.

Can I add my own wind or solar farms?

Yes, on the Compound Vision Expert tier. Add farms via the API or the dashboard modal. Compound Vision infers missing specs from vintage-weighted defaults and reports a data-quality badge so you know what's measured vs estimated.

Do I need to commit annually?

No. All paid tiers are monthly and cancelable. Annual commitments are available for Expert with a discount — talk to us.

Can I try Pro before paying?

Yes. Email us and we'll set up a 14-day Pro trial with no card required. This applies to both GridSight and Compound Vision.

What about data residency?

GridSight runs on Fly.io in London (LHR). Compound Vision runs on Fly.io. All data stays within the provider's infrastructure. Expert customers can request dedicated infrastructure.

Can I self-host?

Not today. If you have a strong regulatory or security reason that requires it, get in touch — we're open to discussing it for Expert customers.