The latest renewable energy news includes announcements on ESS, Juniper Energy, Alsym Energy, Ameresco, Energy Vault, among others.
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ESS Targets 8.5 GWh U.S. Sodium-Ion Supply as Energy Storage Pipeline Approaches $1 Billion
ESS is accelerating its move into U.S.-made sodium-ion energy storage, highlighting an 8.5 GWh planned supply arrangement with Alsym Energy covering sodium-ion cells and modules. The company says early-stage commercial opportunities across data centers, critical infrastructure and utility markets are approaching $1 billion, indicating growing demand for alternatives to lithium-ion storage. ESS has also signed a letter of intent with Juniper Energy covering at least 500 MWh of sodium-ion storage. The relationship is anchored by a proposed 10 MW / 80 MWh utility-scale project in California. ESS is simultaneously rolling out its Bridge modular sodium-ion energy storage system. The projects position sodium-ion technology as a potential option for long-duration stationary storage, particularly as AI data centers and power grids increase demand for flexible energy infrastructure.
Ameresco Wins Record $1.8 Billion of Projects as Energy Backlog Reaches $6.73 Billion
Ameresco is benefiting from expanding investment in data-center power and energy infrastructure, securing a record $1.8 billion in new project awards during the second quarter of 2026. The additions pushed the company’s total backlog to a record $6.73 billion, representing growth of 32 percent year over year. Data-center power infrastructure projects were an important driver of the increase, reflecting the growing electricity requirements associated with AI and cloud computing facilities. The scale of the backlog provides Ameresco with significant visibility into future engineering, construction and energy-infrastructure activity. The company also increased its 2026 earnings-per-share guidance following its strong second-quarter performance. Ameresco’s latest project awards illustrate how data-center expansion is increasingly becoming a major investment opportunity for energy-services companies alongside traditional renewable energy, efficiency, storage and grid-modernization projects.
Energy Vault Backlog Jumps 107 Percent to $2 Billion on AI and Energy Storage Demand
Energy Vault expanded its contract backlog by $650 million sequentially during the second quarter of 2026, taking the total to $2 billion. The backlog increased 47 percent quarter over quarter and 107 percent year over year, supported particularly by demand from AI compute infrastructure customers. The company reported quarterly revenue of $17.4 million, representing growth of 104 percent year over year. GAAP gross profit reached $5.4 million with a 31 percent margin, while adjusted gross profit rose to $6.7 million with a 38.6 percent margin. Energy Vault increased its full-year 2026 revenue and gross-margin guidance following the quarter. The figures highlight how battery and other energy-storage infrastructure is becoming increasingly connected with the expansion of power-intensive AI data centers and the requirement for reliable, flexible electricity supply.
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