Launched this week
Solar Butter
Solar Butter Home Energy Simulator
3 followers
Solar Butter Home Energy Simulator
3 followers
Solar Butter Home Energy Simulator is an advanced residential energy modelling platform that calculates how solar panels, batteries, and heat pumps perform in real-world conditions. Instead of relying on annual averages, it uses hourly weather data and dynamic tariff structures to simulate energy flows throughout the year.
What inspired me to build Solar Butter
Solar Butter started from a simple frustration: my own home energy system wasn’t performing the way I expected.
After installing solar panels and a heat pump, I assumed the numbers I’d seen in standard calculators would roughly hold up in reality. The payback periods looked solid, the savings were promising, and everything seemed straightforward on paper.
But once everything was actually running, the results didn’t quite match the expectations.
The solar generation wasn’t aligning with when the house actually needed energy. The heat pump load shifted demand in ways that weren’t reflected in the original estimates. And the battery sizing was clearly going to depend heavily on timing, tariffs, and seasonal variation - none of which were properly captured or analysed during install.
Most calculators were built around annual averages. They told me what should happen over a year, but not how energy flows hour by hour. And that difference matters a lot once you start combining solar, storage, and heating in a real home.
That gap between “estimated performance” and “real-world behaviour” is what pushed me to build Solar Butter - a system that models home energy dynamically, using hourly weather data and time-based tariffs, so you can see how the system actually behaves over time.
The goal was simple: understand how real systems actually perform before committing to expensive installations.