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.

hello.joule
// 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.

CR

Cranelift

Fast compilation for development. Sub-second rebuilds.

LL

LLVM

Maximum optimization for release builds. Production-grade codegen.

ML

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.