Solar home water heater performance requirements
- Issue Time
Solar water heating systems must be safe, reliable, require no operator intervention for normal operation, be visually unobtrusive, and be designed and installed in accordance with all applicable codes. Design and size the system so that solar energy supplies approximately the percent of the annualized hot water demand (“Required Solar Fraction”) specified in Table 1, below.
Table 1: Percent of annualized hot water demand to be met by solar hot water heating system in each location covered in this solicitation:
Required Solar Fraction
Gallons per Day Demand
Hot Water Delivery Temperature
Avg. Main Water Temperature (F)