📋 Case Study
Texas Permian Basin Solar-BESS Hybrid Site Decommissioning & Oilfield Soil Rehabilitation
Legacy hydrocarbon contamination (TPH >5,000 ppm) beneath racking and battery pads
🏗️ Project Overview
150 MW solar + 60 MWh BESS co-located on former oil lease land
🎯 Challenge
Legacy hydrocarbon contamination (TPH >5,000 ppm) beneath racking and battery pads
🔧 Design Approach
Thermal desorption (350°C) of top 1.2m soil; phytoremediation with Panicum virgatum; dual-use pad reuse for EV charging infrastructure
📐 Key Calculations
Thermal Desorption Energy Demand
Soil mass × specific heat × ΔT
Result: 2.8 GJ/m³
Validated against ASTM D7656
Phytoextraction Half-Life
ln(2) / uptake rate constant
Result: 18 months
Guides multi-year monitoring schedule
📊 Results
TPH reduced to <50 ppm; 94% solar racking reused for EV canopy; 100% BESS enclosure repurposed as microgrid control hub💡 Lessons Learned
- •ASTM D7656 validation required pre-thermal treatment
- •Panicum virgatum must be inoculated with petroleum-degrading rhizobacteria
- •Dual-use infrastructure reuse triggered FERC Order No. 2222 interconnection benefits
✅ Key Takeaways
- 1ASTM D7656 validation required pre-thermal treatment
- 2Panicum virgatum must be inoculated with petroleum-degrading rhizobacteria
- 3Dual-use infrastructure reuse triggered FERC Order No. 2222 interconnection benefits