Comparison of Tessera’s Maricopa, AZ Plant with the Proposed Tessera SLV Project

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Comparison of Tessera’s Maricopa, AZ Plant with the Proposed Tessera SLV Project
Maricopa, AZ Plant Proposed SLV Project Why This Is Important
60 SunCatchers total 5,728 SunCatchers 95 times bigger than AZ plant which is currently the largest facility in the US using this technology.  More noise potential.
Located in an urban, industrial area Located in agricultural area Urban background noise already present from busy roads and highways.  No residential areas adjacent to the Maricopa property.
Hydrogen gas is delivered to site Hydrogen gas will be generated onsite Potential for explosion.
Air temperature rarely falls to or below 32 degrees F. Winter air temperatures commonly below freezing and frequently fall below zero degrees F. Not uncommon to fall to -25°F. SunCatcher technology not rated for temperatures this low.  SunCatcher technology not tested at these temperatures.
No fuel storage Proposing 2,500-gallon diesel and 2,500-gallon gasoline above-ground storage tanks. Potential for spills exists.  No spill prevention plan.
Paved roads to the facility Gravel road to the facility. Puts burden on the County to improve the road.  If road is paved, can injure hooves of neighbors’ cattle being moved.
~1,125 ft above sea level ~7,500 ft above sea level. Technology not proven at this elevation.
Some hills/mountains, but not surrounded Located in alpine valley surrounded by mountains. Sound effects not studied in this valley setting.
Uses water for dust control Proposing Soiltac for dust control From Soiltec Manufacturer’s Material Safety & Data Sheet:  Hazardous Decomposition Products. Thermal decomposition may form potentially harmful Acetic acid and Acrolein.
Purpose is not to make money; it is not making money. Purpose not stated for SLV project, but assume it is to make money. Technology not proven.  Maintenance costs likely be higher at the SLV site.  Investors have pulled out of smaller project in Marfa, TX.  Profitability questionable.  Infrastructure investment risky for County.
Wind typically not strong Wind gusts in excess of 40 mph common in the spring. Technology not proven in these conditions.
Cattle feed lots nearby, but no known Certified Organic working cattle ranch. Certified Organic working cattle ranch on adjacent property. Threatens Certified Organic status of neighboring rancher.  No mention of contacting entity that grants certified organic status with an approvable monitoring plan.  Need, at a minimum, a map showing where monitoring wells will be located, depth and screen intervals of monitoring wells, sample plan including what the groundwater will be tested for and frequency of testing.  Is use of Soiltac a threat to Organic Certified status?  Plan should be pre-approved by certified status-appointing agency.
Power Purchase Agreement in place No Power Purchase Agreement Profitability is questionable and certain to fail without a buyer.  Investors have pulled out of a smaller project in Marfa, TX.
Risky infrastructure investment for the County.
Depth to groundwater is deep Depth to groundwater is shallow
(~5 ft below ground surface) Shallow groundwater table makes it easier to contaminate groundwater (less vertical distance to travel), which can mobilize contaminates, making cleanup more costly and difficult.

Tessera Solar

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