The Future of Efficient Computing
Faster than C++.
Safer than Rust.
More Efficient Than Anything.
Joule is an energy-optimized programming language that delivers superior performance while minimizing energy consumption. Built for the era of sustainable computing.
// Energy-aware computation
fn main() {
energy_budget(100.millijoules) {
let result = compute_efficiently();
print("Energy used: {}", energy_consumed());
}
} 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.
10x longer flight times
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.
Ready to Build Energy-Efficient Software?
Join the movement toward sustainable computing. Joule launches Q2 2026.