Who are Denowatts?

Denowatts is a solar performance testing and analytics company that provides digital twin benchmarking, data acquisition, and energy accounting services for photovoltaic (PV) solar and storage portfolios. Founded in 2013 by industry veteran Dan Leary, the company uses wireless, self-powered IoT sensors (known as Deno sensors) to measure effective irradiance and module temperatures in real time.

Core Technology and Services

• Digital Twin Benchmarking: Uses physics-based lifecycle models (built on PVLib) at 5-second resolutions to simulate a solar system's expected performance and establish a precise performance baseline.
• Energy Accounting: Quantifies performance, isolates internal-versus-external loss drivers, and compares predicted P50 models against actual operating models.
• Capacity and Energy Testing: Functions as an ISO/IEC 17025 accredited calibration and testing laboratory, delivering standards-compliant test results (such as ASTM E2848 and IEC 61724) that satisfy lender and investor requirements.
• Data Ingestion and Gateways: Employs the Deno Gateway to connect with field devices using protocols like Modbus RTU/TCP and OPC-UA, streaming audit-grade data to enterprise resource planning (ERP) or third-party monitoring platforms via a REST API.

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