About Hungry Machines
Outsmart your electric bill - Hungry Machines Energy provides an energy management system that shifts HVAC, EV charging, home batteries, and other electric loads to cheaper hours for homes and buildings with solar power or variable electricity rates.
Set your preferences, the computer does the math. You stay in control.
What Hungry Machines does
One optimizer, four ways to connect it to your home. Each night it reads your utility's prices, tomorrow's weather forecast, and a thermal model learned from your own home, then writes a 24-hour plan. Your home runs that plan on its own hardware.
Home Hub
The Home Hub is a small device that talks to your larger ones. Plug it in, connect to wifi and your appliances, then configure your preferences. We build tomorrow's plan each night, based on your preferences; the Hub runs the day's plan and orchestrates the appliances on its own hardware.
Home Hub Plus
Home Hub Plus is a non-invasive device for the wires in your breaker panel, so the Hub can see what circuits are actually drawing. Informs savings beyond just the machines connected to the Hub.
Smart Satellite
The Smart Satellite is a small WiFi device that talks with a window AC, mini-split, or other remote-controlled device. We build tomorrow's plan every night and the Satellite executes it.
Home Assistant integration
If you run Home Assistant, this is the fastest way in. The integration reads your existing climate, water heater, EV charger and battery entities. We build tomorrow's plan every night; your own Home Assistant instance carries it out.
Hungry Machines API
Every device we ship — the Home Hub, the Smart Satellite, the Home Assistant integration — uses the same optimization. Now you can use it as well. See the docs to learn more.
What makes Hungry Machines different
It changes the bill instead of reporting it
Whole-home monitors such as Sense and Emporia tell you where your energy went after the fact. Hungry Machines schedules the machines in advance, so the output is a lower bill rather than a more detailed one. Monitoring data is an input to the plan, not the end goal.
The schedule is derived, not written by you
A smart thermostat such as Nest or ecobee runs one device on a schedule you maintain, and some can shift a little around a single peak window. Hungry Machines derives tomorrow’s schedule from your rate, the weather forecast, and a custom thermal model of your home, then does it again the next night. It optimizes and drives the thermostat you already own.
Multiple machines planned as one system
HVAC, water heater, EV charger, and battery are scheduled together against the same prices, so a charging EV and a pre-cooling house never compete for the same cheap hour. Nothing here is tied to one manufacturer, and no battery is required: the savings come from moving when your existing machines run.
Your home runs the plan on its own hardware
The optimizer builds the plan overnight; your Home Hub, Smart Satellite, or Home Assistant carries it out locally and keeps working if the cloud is unreachable. The thermal model is trained on your readings alone, not pooled with other homes. You can see every decision, the reason behind it, and override at any time.
The free tier offers full optimization for one device, and there is no contract
The Free plan runs the same thermal learning, pre-conditioning, and weather-aware scheduling on one HVAC device at $0, with no payment method required. Premium enables multi-device coordination at $8.99/month, billed monthly, and can be cancelled from your dashboard; cancelling returns you to Free rather than switching anything off.
Who uses Hungry Machines
- Homeowners on a time-of-use plan from PG&E, SDG&E, SCE, or ConEd who want the peak-hour savings without managing them by hand
- Households on hourly or day-ahead rates such as ComEd, Ameren, Octopus Agile, or a European day-ahead tariff
- Home Assistant users who already have their thermostat, charger, water heater, or battery connected and want the scheduling handled
- Renters and owners with a window AC or mini-split who want one unit optimized with nothing else to install
- Solar owners on export tariffs who want to self-consume production rather than sell it back at the export rate, including a balcony or plug-in panel: see the balcony solar hub for the legal and cost questions first.
- Developers and partners building on the same optimization API that runs the Hub and the Satellite
A note from the founder
Welcome to Hungry Machines Energy — we are working to help you take back control of your energy use and outsmart your electric bill.
Electricity costs are high and rising, and pricing structures are increasingly complicated. Time-of-use rates and the integration of renewable power onto the grid and into our homes offer great opportunities for the future but bring challenges today. At Hungry Machines Energy, our goal is to help the technology behind our power consumption catch up to the advances of technology in electricity generation.
Throughout the grid, power costs are variable throughout the day. Many pricing plans for homes and businesses are built such that the cost of heating, cooling, or charging an electric vehicle can vary widely depending on the hour. And solar power can drive our costs down, but often only if our own home uses it.
With Hungry Machines Energy, we are giving our buildings a brain: Rather than manually chase low price hours, we are automating the process while leaving you in charge. We know you don't want dumb appliances running during expensive times, but you also don't want black-box controllers turning off the AC when it is still too warm indoors. Instead, you can input your comfort ranges and other guidance, then we build custom thermal and charging models of your home using weather, temperature, and appliance inputs. Each night you get an optimized schedule for each appliance, sent to the devices automatically.
I started Hungry Machines to close the gap between what the grid needs and what we want in our homes. Conveniently, these goals are often aligned, but the technology to connect them has been lacking. We are proud to be building it now.
Our immediate goal is to save money for individuals, renters, homeowners, and small businesses. We can likely do this in your home today. As we grow, we can help reduce the need for expensive grid infrastructure and additional generation plants in our communities, even as overall energy usage goes up. We can be more efficient with what we already have. In the long run, we aim to change how the grid works as a whole, deliberately building and operating it to serve the end consumers.
Welcome again, we are happy to have you join us on this mission.
Grant Genzman
Founder, Hungry Machines Energy
How Hungry Machines works with you
Getting started
Create an account, connect your home by whichever route fits, and set your comfort band and charging needs. The first plan arrives the following night. Water heating and EV charging shift from day one; HVAC scheduling sharpens over the first two weeks as the thermal model learns how your specific building holds heat.
Support and communication
Product and account questions go to info@hungrymachines.io. Bugs in the Home Assistant integration or the API go to GitHub issues (opens in new tab), where they are tracked in the open. Setup guides and the API reference live at docs.hungrymachines.io (opens in new tab).
What stays yours
Your readings are stored per account and are never pooled into a shared model. The plan runs locally, so your home stays right even if the internet goes out. Every decision carries its reason, and every one can be overridden.
Key facts
- Company name
- Hungry Machines
- Type
- Home energy management system (software plus optional hardware)
- Founded
- 2025
- Founder
- Grant Genzman
- Headquarters
- New York, NY, US
- Website
- hungrymachines.io
- Core offering
- Nightly optimized schedules for HVAC, EV charging, home batteries, and water heaters against time-of-use and dynamic electricity rates
- Delivery routes
- Home Hub · Home Hub Plus · Smart Satellite · Home Assistant integration · Hungry Machines API
- Pricing
- Free plan at $0 for one HVAC device; Premium at $8.99/month for unlimited devices. Hardware not yet priced.
- Contract terms
- Month to month. Cancel any time from your dashboard.
- Markets served
- 10 live utilities and markets across United States, United Kingdom, Australia, Europe, Spain
- Communication
- Email info@hungrymachines.io; bug reports on GitHub
- Compared against
- Home energy monitors such as Sense and Emporia; smart thermostats such as Nest and ecobee
- Documentation
- docs.hungrymachines.io
- Open source
- github.com/hungrymachines
- Social
- LinkedIn · Instagram · GitHub · Facebook
Frequently asked questions
What is Hungry Machines?
Outsmart your electric bill - Hungry Machines Energy provides an energy management system that shifts HVAC, EV charging, home batteries, and other electric loads to cheaper hours for homes and buildings with solar power or variable electricity rates. It runs on our Home Hub, on a Smart Satellite, or inside your own Home Assistant, and builds a new plan for your home every night.
Who founded Hungry Machines?
Hungry Machines was founded by Grant Genzman in 2025. The company is based in New York, NY.
Is Hungry Machines a utility program?
No. Hungry Machines is an independent product that works for the household, not the utility. It reads your published rate and schedules your machines to take advantage of it; it does not enroll you in demand-response events or hand control of your devices to a third party.
Does Hungry Machines replace my thermostat or charger?
No. It drives the thermostat, EV charger, water heater, and battery you already own, across brands. The Smart Satellite is the one piece of hardware we make for units that only have an infrared remote, such as window ACs and mini-splits.
How is Hungry Machines different from a home energy monitor?
A monitor such as Sense or Emporia measures and reports. Hungry Machines decides and acts: it schedules your machines in advance so that the bill changes, rather than telling you afterwards what it was.
Get in touch
Have questions or want to learn more? Visit our contact page or email us at info@hungrymachines.io.