# Maingen

> Maingen is a Y Combinator (S26) startup building reinforcement learning environments for industrial operations - the roughly $5 trillion slice of the US economy that runs factories, power plants, and solar farms. Its first product, SolarBench, tests whether frontier AI agents can act as the on-call engineer for a portfolio of solar farms, handling alerts, telemetry, work orders, and priced field actions. The company sells the environments and datasets that let AI labs train and evaluate models on messy, long-horizon physical-world work.

- **Founded:** 2026
- **Headquarters:** San Francisco, California, United States
- **Founders:** Phillip Yan (CEO & Co-founder), David Yang (CTO & Co-founder)
- **Team size:** 2
- **Products:** SolarBench, RL Environments for Industrial Operations
- **Notable:** Accepted into Y Combinator's Summer 2026 (S26) batch, Launched SolarBench, described as the first benchmark testing AI agents on long-horizon industrial operations work, Built its benchmark scenarios from hundreds of hours with real solar operators

## Products & services

- **SolarBench** — The first benchmark to test whether frontier AI agents can act as the on-call engineer for a portfolio of solar farms. The agent operates a simulated solar remote-operations desk complete with an alerting system, per-site telemetry, work orders, SOPs and manuals, inventory, and an inbox of owners and technicians. It must discover what the work is, commit to priced and irreversible field actions like dispatching a technician or ordering a part, and maximize the portfolio's P&L. Scenarios are drawn from hundreds of hours with people who run solar for a living.
- **RL Environments for Industrial Operations** — Reinforcement learning environments and enterprise datasets sold to frontier AI labs so they can train and evaluate models on long-horizon, multi-domain industrial work - the roughly $5 trillion slice of the US economy.

## Achievements

- Accepted into Y Combinator's Summer 2026 (S26) batch
- Launched SolarBench, described as the first benchmark testing AI agents on long-horizon industrial operations work
- Built its benchmark scenarios from hundreds of hours with real solar operators

## Latest updates

- **2026-07** — Maingen participating in Y Combinator's Summer 2026 batch, building RL environments for industrial operations.
- **2026-07** — SolarBench live at solarbench.maingen.ai, offering early access and dataset requests.

## Links

- Website: https://maingen.ai
- LinkedIn: http://www.linkedin.com/company/maingen
- Twitter/X: https://twitter.com/PhillipYan2

---

Profile page: https://yespress.io/maingen-yc-s26
Published by YesPress — https://yespress.io
Last updated: 2026-07-30