Stem vs Phillips 66
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.
Houston diversified energy (NYSE: PSX) at $145.5B 2024 revenue; Coastal Bend NGL acquisition $2.2B (2024), Rodeo renewable diesel/SAF complex, LA Refinery closed, Q4 2024 adjusted loss amid refining margin pressure vs Valero.
About
Phillips 66 is a Houston, Texas-based diversified energy manufacturing and logistics company — publicly traded on the New York Stock Exchange (NYSE: PSX) as an S&P 500 Energy component — operating 13 refineries with 2.2 million barrels-per-day capacity, midstream pipeline and NGL infrastructure, retail fuel brands, a chemicals joint venture, and a renewable fuels facility through approximately 14,000 employees. In fiscal year 2024, Phillips 66 generated $145.5 billion in revenue, though Q4 2024 earnings fell to $8 million versus $346 million in Q3 2024 (adjusted loss of $61 million) due to refining margin compression from the spread between crude oil input costs and refined product prices. Spun off from ConocoPhillips in May 2012, Phillips 66 operates through five segments: Refining (processing crude oil into gasoline, distillates, and aviation fuel), Midstream (crude and NGL pipelines, terminals, and natural gas processing including the 2024 $2.2 billion EPIC NGL acquisition renamed Coastal Bend), Marketing and Specialties (Phillips 66, Conoco, 76, and JET fuel brands at 7,000+ branded retail sites across North America and Europe), Chemicals (CPChem joint venture with Chevron Phillips Chemical producing ethylene, polyethylene, and aromatics), and Renewable Fuels (Rodeo Renewable Energy Complex producing renewable diesel and sustainable aviation fuel — SAF). In 2024, Phillips 66 divested its 65% stake in German and Austrian retail operations for $1.6 billion and announced closure of its Los Angeles Refinery.
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