Simple, Transparent Pricing
Start free, upgrade when you're ready
Free
- ✓ Basic Time-of-Use rate optimization
- ✓ Manual override controls
- ✓ Energy usage dashboard
- ✓ Single HVAC device
- ✓ Community support
Premium
- ✓ Everything in Free
- ✓ Thermal learning & pre-conditioning
- ✓ Weather-aware optimization
- ✓ Multi-device support (HVAC, batteries, EV)
- ✓ Advanced analytics & insights
- ✓ Priority support
- ✓ Early access to new features
What you're paying for
Hungry Machines is a home energy management system. It reads your electricity rate, your weather forecast, and how your home actually behaves, then builds a schedule that moves your HVAC, EV charger, home battery, and water heater into cheaper hours — without pushing you outside the comfort limits you set.
The Free plan runs that optimization for one HVAC device against your time-of-use rate. Premium is where the system learns your specific home: how fast it heats and cools, how much the weather moves it, and how far ahead it needs to pre-condition to coast through an expensive afternoon. That learning is what turns a generic schedule into one built for your house.
There is no hardware to buy and nothing to install in your electrical panel. If your devices are already in Home Assistant, you can be running in an evening. Check supported rates and regions to confirm your utility is covered.
Pricing questions
- Is the free plan actually free?
- Yes. The Free plan costs $0 and does not expire. It optimizes a single HVAC device against your time-of-use rate, and it does not require a payment method to start.
- What do I get by upgrading to Premium?
- Premium adds thermal learning and pre-conditioning, weather-aware optimization, support for multiple device types (HVAC, home battery, EV charger, water heater), advanced analytics, and priority support. It costs $8.99 per month.
- Do I need special hardware?
- No. Hungry Machines works with the devices you already have, through Home Assistant. You need a supported time-of-use or dynamic electricity rate and at least one controllable device — an HVAC unit, EV charger, home battery, or water heater.
- Do I need a home battery or solar panels to save money?
- No. Most of the savings come from shifting when your existing equipment runs, not from storing energy. A battery and solar both increase what is possible, but neither is required.
- Can I cancel at any time?
- Yes. Premium is billed monthly and can be cancelled at any time from your dashboard. Cancelling returns your account to the Free plan rather than switching the system off.