Find the best hours to use your solar.
Spot the hours when forecast solar production makes it a better time to run energy-intensive equipment, such as your watermaker or induction hob.
Know how much energy your boat will have tomorrow.
HelioHelm forecasts your solar production and battery state, so you can plan energy-intensive equipment around the sun and know when auxiliary charging is actually needed.
Watermaker · Starlink · Induction · Dive compressor · Laptops
Plan your day around the energy on board.
Choose when to use power, check your overnight reserve, and plan ahead for charging before leaving your anchorage.
See your battery reserve through the night.
See your forecast battery state of charge over the coming hours, including the expected overnight minimum and next-morning reserve. Check whether you have a comfortable margin before settling in for the night.
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Know when you need to recharge.
See whether expected solar production, battery reserve and onboard consumption leave a gap that needs engine or generator charging. Ask the Premium AI assistant to explore charging times and duration with you.
Your boat. Your energy forecast.
Your onboard setup shapes the forecast. HelioHelm combines your battery bank, solar capacity and everyday loads with the weather at your location to model the energy available on your boat.
Built around your battery bank
Your battery chemistry and capacity shape the simulation, including charge efficiency and how charging slows as the bank fills. Set a minimum reserve to reflect how much you are comfortable using.
Sized to your solar installation
Enter your installed solar capacity so expected production reflects the panels aboard your boat.
Account for what you actually use
Use a baseline estimate or list individual loads, from refrigeration and Starlink to watermaking, induction cooking and laptops, with their power use and running times.
Located where you sail
The forecast uses the weather at your chosen location. Update your position as you move between anchorages to keep it relevant to where you are sailing.
Forecasting built on real weather data
HelioHelm combines numerical weather prediction with your onboard setup to forecast how your energy reserve is likely to evolve.
ECMWF weather data
Numerical weather prediction from ECMWF supplies the weather input to HelioHelm’s own solar modelling.
Boat-specific solar modelling
HelioHelm estimates solar production using your location and configured solar installation.
Battery-aware SOC simulation
Forecast generation and onboard consumption feed a battery state-of-charge simulation, through the day and overnight.
Spend less time calculating and more time confidently using the energy you have.
Try HelioHelm free