Stem vs Diligent ESG
Side-by-side comparison of AI visibility scores, market position, and capabilities
Clean energy storage company with 1,000 MW+ under management; Athena AI optimizes battery dispatch for commercial demand charge reduction competing with Tesla Powerpack and Fluence.
About
Stem is a clean energy storage and AI energy management platform that installs commercial and industrial battery storage systems and manages them with Athena, its AI-powered energy optimization software — enabling businesses, utilities, and renewable energy developers to reduce electricity costs through demand charge management, energy arbitrage, and participation in grid services markets. Listed on NYSE (NYSE: STEM) and headquartered in San Francisco, California, Stem generates approximately $200 million in annual revenue and has deployed over 1,000 MW of battery storage assets under management.\n\nStem's AI software platform Athena continuously monitors electricity prices, grid signals, and demand patterns to optimize when battery systems charge (typically during low-price periods or from solar generation) and discharge (during peak demand hours or when grid prices are high). For commercial and industrial customers, Athena minimizes demand charges (the component of utility bills based on peak power consumption) — a significant cost reduction opportunity for manufacturers, hospitals, and commercial real estate operators. For front-of-the-meter solar+storage projects, Athena optimizes dispatch for merchant electricity revenue.\n\nIn 2025, Stem competes in the commercial and industrial energy storage market against Fluence (Siemens-AES joint venture), Tesla Powerpack, Powin, and utility-side storage developers. The market has grown with IRA incentives making battery storage economics more attractive and with energy costs driving commercial interest in demand charge reduction. Stem faces competition from Tesla's integrated solar+storage offerings and from utilities' own storage programs. The 2025 strategy focuses on growing the Athena software-only model (managing third-party batteries not manufactured by Stem), expanding in the utility-scale solar+storage market, and growing internationally in Europe and Asia.
New York NY. Board governance and ESG management platform serving 700,000+ board members globally, acquired Galvanize and BoardEffect for integrated risk and ESG.
About
Diligent is a New York-based governance, risk, and compliance (GRC) platform that has become one of the largest providers of board management and ESG software globally. The company serves over 700,000 board members and executives across 90+ countries, and has expanded its platform through strategic acquisitions including Galvanize (compliance and audit management) and BoardEffect (board portal for nonprofits and healthcare). Its ESG module integrates ESG data management with board-level governance workflows.\n\nDiligent ESG enables companies to collect ESG metrics across environmental, social, and governance dimensions, align with major reporting frameworks including GRI, TCFD, SASB, and the UN SDGs, and prepare board-level sustainability reports. The platform connects ESG performance data directly to the board agenda management workflow, allowing directors to review and approve sustainability disclosures within the same secure environment they use for board meetings and governance.\n\nDiligent targets large public companies, financial institutions, and regulated organizations that need to demonstrate strong governance around their ESG programs, not just report data. It competes with ServiceNow ESG, Workiva, and SAP Sustainability in the enterprise segment. Diligent's key differentiator is the integration of ESG with board governance—allowing sustainability to be managed as a fiduciary responsibility rather than a standalone compliance exercise.
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