Aggreko and United Rentals Lead Generator Rental to $8.43 Billion
Aggreko’s 9.6 GW global rental fleet and United Rentals’ technology-led expansion are driving the power generator rental market toward $8.43 billion by 2032, as data center build-outs, mining operations, and emergency infrastructure demand sustain multi-year equipment cycles.
The Global Power Generator Rental Market, valued at USD 5.62 billion in 2024, is consolidating around Aggreko and United Rentals amid sustained demand from data centers, mining, construction, and emergency response. Aggreko continues investing in modular mobile power solutions, while United Rentals is advancing technology-driven worksite power systems. The market is projected to reach USD 8.43 billion by 2032, growing at a 5.2% CAGR.
Aggreko Expands 9.6 GW Fleet as United Rentals Advances Technology-Led Power Solutions
Aggreko, headquartered in Glasgow and founded in 1962, operates a 9.6 GW modular rental fleet serving mining, data centers, manufacturing, utilities, and events, focusing on high-value long-term contracts. In 2025, it expanded investment in hybrid and low-emission generator technologies. United Rentals, based in Stamford, delivers integrated worksite power solutions combining generators, distribution systems, and energy management services for construction, industrial, and critical infrastructure clients across North America.
“Aggreko’s 9.6 GW fleet with 60-plus years of operational history means no competitor can replicate its deployment capability at short notice for large-scale events or emergency response. That operational moat, combined with a shift to hybrid and gas generator platforms, keeps Aggreko in a structurally advantaged position through the forecast window.”
Herc Rentals and Cummins Target Eco-Friendly Platforms as Data Center Demand Accelerates
Herc Rentals, based in Bonita Springs, is expanding temporary power offerings with fuel-efficient generators targeting cost-sensitive construction and industrial clients across North America. Cummins Inc. leverages its engine expertise to supply rental-grade generators with advanced emissions controls, meeting Tier 4 Final and EU Stage V standards. Eco-friendly and hybrid generator technologies are emerging as key differentiators, reshaping fleet investment as clients increasingly demand low-emission solutions.
“Data centers requiring guaranteed uptime during grid transitions and construction sites facing Stage V emissions mandates are both driving the same commercial outcome, rental generators must now be cleaner and smarter, not just available. Cummins and Herc are each responding to that specification shift from different positions in the value chain.”
Market Context: $5.62 Billion Base, 5.2% CAGR, North America Leads
Maximize Market Research values the global power generator rental market at USD 5.62 billion in 2024, forecasting USD 8.43 billion by 2032 at a 5.2% CAGR. North America holds the dominant revenue share, underpinned by extensive construction activity, critical infrastructure maintenance requirements, and a dense network of rental fleet operators including Aggreko, United Rentals, Herc Rentals, and Cummins. Asia-Pacific is the fastest-growing region, driven by infrastructure development, mining expansion, and rising data center construction across China, India, and Southeast Asia. The construction and utilities segments generate the largest application share. Fuel price volatility and the capital-intensive nature of fleet electrification and hybrid conversion programs remain the sector’s primary near-term margin constraints through the forecast period.