Context

Our software for Solar Letters, powered by Castillo Engineering, streamlines the permitting process for residential solar installation companies and overseas design firms, making solar energy more accessible and cost-effective. With the capacity to generate over 100,000 structural and compliance letters monthly, we help accelerate the transition to clean energy.

Our intuitive order management and analytics dashboard enhances efficiency, reducing administrative burdens so solar companies can focus on what matters most—expanding access to renewable energy.

By prioritizing transparency, data-driven insights, and process optimization, our software enables solar companies to complete more projects with less time, waste, and cost, supporting a cleaner, greener future.

High-level capabilities

stack: Python / Django + React.js ASCE Environmental Hazards API Integration

Order Submission:

Clients can easily submit orders, providing all necessary information to automate final deliverables and minimize the need for internal user interaction with the orders. Automation has been implemented throughout the workflow to ensure that both internal and external users minimize the time it takes to submit and review orders.

Order Status Visibility: Clients have real-time visibility into their order status, including how long it has been in progress and key operational metrics such as the percentage of orders delivered on time versus late.

Comprehensive Internal Tools: For CES users, the app consolidates everything needed to manage and review an order in one place.

This includes:

* Home structural information

* Environmental hazards and considerations

* Access to all relevant files without leaving the app

* Easy-to-use action buttons

A detailed changelog that tracks all updates and notes related to the order Integrated QC and Billing: The platform seamlessly integrates quality control and billing information, covering the entire order process from start to finish.

This app enhances efficiency and transparency for both clients and CES staff, ensuring a smooth experience throughout the installation process while significantly reducing the time required for order submission and review.