Intraday energy trading
Same electrons.
Better timing.
Electricity is a bargain at 3am and a luxury at 6pm. We keep a very large battery and a very good sense of timing: we fill it up while the country sleeps and share it back when everyone gets home and puts the kettle on.
Watch a day play out ↓One day in the life of our battery
An illustrative day of prices on a 1 MW / 2 MWh battery. Drag the slider to scrub through the day.
How it works
1. Buy low
Overnight and on sunny afternoons there's more power than people need, so prices fall. We charge the battery from the grid.
2. Store
The battery holds that energy for a few hours, ready to be released the moment it's worth more.
3. Sell high
At the morning and evening peaks demand surges and prices spike. We discharge back to the grid and keep the difference.
Our edge
Every trade is a forecast
Buying low and selling high is simple to say. Doing it consistently means knowing, half-hour by half-hour, where prices are heading and what our asset can deliver. Our trading engine fuses four signal streams into a single dispatch decision.
Probabilistic price forecasting
Ensemble models trained on day-ahead auction results, the continuous intraday order book and system imbalance prices generate thousands of Monte Carlo price paths every settlement period. We trade the distribution, not a single guess.
Weather intelligence
Numerical weather prediction (NWP) ensembles drive our wind and solar output forecasts. When a renewable surplus is coming we know prices will fall before the market does, and position the battery to charge.
Demand forecasting
Short-term load models combine temperature, calendar effects, embedded generation and even TV pick-ups to anticipate the morning and evening ramps, when net demand and prices peak.
Storage monitoring
Live telemetry on state of charge, state of health and cell temperature feeds degradation-aware dispatch: every cycle is priced against the wear it puts on the asset, so we only trade spreads that are truly profitable.
Read the full methodology: formulas, models and risk framework →
Why it matters
- Prices are getting more volatile. More wind and solar means bigger swings between cheap and expensive hours, and a bigger spread to capture.
- The grid needs flexibility. Storing surplus power and releasing it at peaks cuts the need for gas plants to fire up.
- Batteries are fast. They can switch from charging to discharging in seconds, trading every half-hour of the intraday market.
For investors
We're raising our seed round
Spreadwatt is raising seed capital to bring our first grid-scale battery online and build the trading platform that runs it. If you'd like to see the deck or talk through the opportunity, we'd love to hear from you.