2 Medium-temperature collectors are solar thermal collectors that generally operate in the temperature range of 140 degrees Fahrenheit to 180 degrees Fahrenheit but can also operate at temperatures as low as 110 degrees Fahrenheit. Special collectors are included in this category. 3 High-temperature collectors are solar thermal collectors that generally operate at temperatures above 180 degrees Fahrenheit. 4 Total shipments as reported by respondents include all domestic and export shipments and may include imports that subsequently were shipped to domestic or to foreign customers. 5 Prices, in nominal dollars, equal shipment value divided by quantity shipped.
Value includes charges for advertising and warranties.
Excluded are excise taxes and the cost of freight or transportation for the shipments. Manufacturers producing more than one type of collector are accounted for in both groups. No data are available for 1985. High-temperature collector shipments were dominated by one manufacturer. 1993 forward - EIA, Renewable Energy Annual, annual reports.