Wattstor Tech Stack

Onsite renewable energy systems with IoT monitoring and battery optimization

Services for Renewable Energy London 51–200 employees Founded 2013 Privately Held

Wattstor designs and operates behind-the-meter renewable energy installations, pairing Python + TypeScript backend services (FastAPI, PostgreSQL, InfluxDB) with distributed IoT monitoring (AWS IoT Greengrass, Modbus, OCPP). The stack emphasizes real-time sensor data ingestion and control—Timestream for time-series analytics, RabbitMQ for event routing—which aligns with their active projects around battery optimization and hardware-software integration. Engineering-focused hiring (5 roles, all technical) suggests they're scaling product depth rather than sales footprint.

Tech Stack 32 technologies

Core StackPython TypeScript React AWS AWS Lambda PostgreSQL InfluxDB DynamoDB Grafana CloudWatch Sentry FastAPI Docker RabbitMQ JavaScript Cypress Playwright Selenium AWS ECS IoT Core AWS IoT Greengrass AWS SQS Timestream Ubuntu ZeroMQ SQLite Modbus OCPP RS485 Appium+2 more

What Wattstor Is Building

◆Challenges

Transition to net zero
Monitoring regulatory changes
Ensuring product compliance
Supplier certification management
Expanding hardware capabilities
Technical debt strategy
Build-vs-buy decisions
Hardware-software integration
Reducing energy costs
Optimizing battery usage

▲Active Projects

Compliance roadmap development
Cybersecurity implementation
Ac/dc coupled system architecture design
Hardware-software integration for monitoring
Podium ems
Energy trading platform
Integration of hardware solutions into customer-specific energy systems
Prototype testing of battery inverters
Optimization engine

Hiring Activity

Accelerating5 roles · 5 in 30d

Department

Engineering

Seniority

Mid

Manager

Senior

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About Wattstor

Wattstor provides end-to-end onsite renewable energy systems for commercial and industrial customers in the UK. The company designs, builds, finances, and operates installations—solar arrays, battery storage, EV charging, microgrids—and retains operating rights, meaning customers purchase the electricity generated at below-grid rates while Wattstor captures margin through optimized system performance. Core competencies span compliance roadmap development, cybersecurity, battery inverter prototyping, and an emerging energy trading platform. The business model requires tight hardware-software integration and continuous optimization to manage supplier certification, regulatory changes, and technical debt.

HeadquartersLondon

Company Size51–200 employees

Founded2013

Frequently Asked Questions

What is Wattstor's technology stack?

Backend: Python, FastAPI, PostgreSQL, InfluxDB. Frontend: React, TypeScript. Cloud/IoT: AWS (ECS, Lambda, IoT Core, IoT Greengrass, DynamoDB, Timestream). Monitoring: Grafana, CloudWatch. Protocols: Modbus, OCPP, RS485.

What does Wattstor do?

Wattstor designs, builds, finances, and operates onsite renewable energy systems (solar, battery storage, EV charging, microgrids) for commercial customers. Customers buy the generated electricity at below-grid rates; Wattstor retains operating rights and optimizes system performance for long-term returns.

How this profile is built

Wattstor's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.