Investor Presentaiton

CASE HISTORY EXAMPLE Spa*ark Energy_25 Project Name: United Downs Location: Cornwall, UK Capacity: 1 to 3MW (possibly constrained by the current condition of the Distribution Network) Temperature: ~193°C Flow rate (L/sec): Targeting 80; achieved 66 to date "at only 8.2MPa❞ Hole Depth: 5275m production hole and 2393m injection hole, both completed. Drill rig: Has Innova; also used in the St1 Otanieme Project, Finland http://www.angers-soehne.com/?page_id=4793&lang=en Status: Drilling completed; well testing underway; turbine generator not yet installed Website: https://www.uniteddownsgeothermal.co.uk/ Reason for inclusion: A very similar concept to Lemont; namely a permeable fault adjacent to a granitic heat source Comment: United Downs evolved from an EGS project in the 1980s. It is targeting a wide, permeable fault which will allow unstimulated circulation. Final power figures will depend on temp and flow rate, but the principle of a non-volcanic, (moderate-temp, moderate-flow) 'wet' geothermal play will have been proven. Total cost estimated at ~£23M. Drill time was ~8 months to complete both holes, drilling 24/7. Perspective diagram of a project in the UK nearing completion. The production well will draw hot water from a fault zone at a depth of ~4.8km. The return water from the turbine will be re-injected at ~2.2km. Heat source is an adjacent granite; i.e., a similar geology to Lemont. 1000m 2000m 3000m 4000m 5000m -300m Power Plant Injection Well Water passes through natural fractures in the faulted rock Production Well Granite

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