Your Solar Asset Is Underperforming. Here's Why.

Your Solar Asset Is Underperforming. Here's Why.

by Clean Power Hour

Applied Sciences & Engineering Energy THVAlternative and renewable energy sources and technologyTHVSSolar power
🎙 Clean Power Hour 👥 11K 📅 February 19, 2026 ⏱ 20 min 👁 67 📄 interview 🧭 2026-08-16
Available in: English (current) Français

Keywords

solarenergy accountingperformanceDenowattsSandia

Summary

In this episode of the Clean Power Hour, host Tim Montague interviews Dan Leary, founder of Denowatts, and Doug Macmillan of Portside Systems at RE+ Northeast in Boston. The discussion centers on the need for improved data management in the solar industry. Leary argues that many asset owners still manage performance data as they did a decade ago, missing opportunities to identify and recover losses. Denowatts offers an ’energy accounting’ approach, using a custom weather station (the Deno) and real-time analytics to categorize production losses into four buckets: climate-related, modeling errors, external factors, and issues within the commercial boundary. This framework helps asset managers prioritize actions. Leary also discusses a collaboration with Sandia National Laboratories to develop ‘GAAP for solar,’ a common standard for reporting and benchmarking solar asset performance, with a white paper expected within six months. Macmillan explains Portside’s role as a system integrator, providing engineering services and building auxiliary equipment for distributed generation sites. The conversation emphasizes the importance of modernizing data practices to make solar projects more predictable, bankable, and attractive to investors.

177 words

Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable insights into the practical challenges of solar asset management, introducing the concept of ’energy accounting’ as a systematic approach to categorize and address performance losses. The argumentation is coherent, with Leary clearly explaining the four loss categories and the potential for recovery. The collaboration with Sandia National Laboratories adds credibility, suggesting a move toward industry standardization. However, the discussion remains at a high level, lacking specific case studies or quantitative examples to substantiate the claims. The value lies in raising awareness and offering a framework, but the depth of technical detail is limited.

Scientific Rigor, Source Quality, Title Accuracy

The video maintains a professional tone and features credible speakers with industry experience. The mention of Sandia National Laboratories is a positive indicator of scientific rigor, though no specific studies or data are cited. The description provides links to the companies and individuals involved, but no external scientific sources are referenced. The title accurately reflects the content, focusing on underperformance and its causes. Overall, the scientific rigor is moderate, relying on expert opinion rather than peer-reviewed evidence.

189 words

Title / Content Match

The title accurately reflects the content, which focuses on diagnosing and addressing solar asset underperformance.

Quality & Reliability

7/10

The video features expert interviews with industry professionals, discusses a concrete methodology (energy accounting) and a collaboration with Sandia National Laboratories, but lacks detailed technical data or peer-reviewed references.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

  • Denowatts — Company website of the featured company, providing details on their energy accounting platform.
  • Portside Systems — Company website of the partner company, detailing their engineering services.
  • Dan Leary LinkedIn — LinkedIn profile of the founder of Denowatts.
  • Doug Macmillan LinkedIn — LinkedIn profile of the engineer from Portside Systems.
  • Clean Power Hour Book — Book by the host, Tim Montague, on commercial solar.

Concurring Sources

External References

Contribution & Novelties

The video introduces the concept of ’energy accounting’ as a novel approach to solar asset management, moving beyond traditional monitoring to categorize losses and prioritize recovery actions. It highlights an ongoing effort to establish industry-wide standards for performance reporting, which could enhance transparency and bankability. The collaboration with Sandia National Laboratories is a notable step toward scientific validation.

Pour aller plus loin :

  • Solar Performance and Degradation — NREL’s research on solar panel performance and degradation.
  • Photovoltaic System Performance — Sandia National Laboratories’ PV Performance Modeling Collaborative.
  • GAAP Principles — Overview of Generally Accepted Accounting Principles, the model for the proposed solar standard.

103 words

Radar Profile

The radar profile shows balanced scores across information quantity, quality, technical level, and reliability, with a slight emphasis on quality and reliability. This indicates a well-rounded but not deeply technical presentation, suitable for industry professionals seeking an overview of solar asset management innovations.

Reliability 7/10