The Future of Efficient Computing
Performance.
Safety.
Energy Efficiency.
A systems programming language designed for energy-efficient computing. Making energy consumption visible, measurable, and controllable.
// Energy-aware computation with compile-time budget
#[energy_budget(max_joules = 0.001)]
fn main() -> i32 {
let result = compute_efficiently();
println!("Result: {}", result);
result
}Why Joule?
Built from 50+ years of programming language evolution, designed for the next 50 years of computing.
Energy Budgets
First language with energy budgets in the type system. Know exactly how much power your code consumes.
Memory Safe
Ownership and borrow checking without garbage collection overhead. Safe by default, fast by design.
Heterogeneous
First-class CPU, GPU, TPU, and NPU support. One language for all accelerators.
Thermal Aware
Runtime adaptation based on hardware thermal state. Automatic throttling for sustainable operation.
Built For
Where energy efficiency isn't optional—it's essential.
Edge AI & Medical Devices
Battery-powered inference with predictable energy consumption. Perfect for wearables, implants, and portable diagnostics.
FDA & EU AI Act compliance ready
Satellites & Drones
Every millijoule matters when you're running on solar panels or limited batteries. Joule maximizes mission duration.
Optimized for mission-critical constraints
Data Center Optimization
Reduce cooling costs and carbon footprint. Thermal-aware scheduling prevents hotspots and maximizes throughput.
30% reduction in cooling costs
Regulated AI Systems
Auditable energy consumption for compliance reporting. Prove your AI's environmental impact with precision.
Built-in energy auditing
Tri-Backend Architecture
The right backend for every stage of development and deployment.
Cranelift
Fast compilation for development. Sub-second rebuilds.
LLVM
Maximum optimization for release builds. Production-grade codegen.
MLIR
Custom energy dialect for heterogeneous compute. GPU, TPU, NPU support.
Publications
Whitepapers and technical documentation on sustainable computing and energy-efficient software development.
The Joule Story
A Language Born from Necessity
The origins and motivation behind Joule. Why we created a new programming language focused on energy efficiency.
Technical Overview
A Modern Language for Energy-Efficient Computing
Comprehensive technical documentation of Joule's design, features, and architecture.
The Hidden Energy Crisis in Computing
Software's Environmental Impact
An examination of how programming language design and software architecture decisions contribute to energy consumption.
A Manifesto for Sustainable Computing
Principles for Building Software in the Age of Climate Awareness
Ten principles for energy-aware software development. A framework for building better software that respects the finite resources of our planet.
Ready to Build Energy-Efficient Software?
Join the movement toward sustainable computing. Start building with Joule today.