The City of Dubuque requires a Solar Thermal License in order for a person to install a solar thermal project on a home or business. The requirement does not apply to solar photovoltaics. The licensing requirement can be met one of two ways:
An installer may be Solar Thermal Certified by the North American Board of Certified Energy Practitioners (NABCEP) or
An installer may complete the Northeast Iowa Community College Solar Thermal Training
Installers are also required to obtain a permit before altering or installing a system. Application details are available on the program website.
Iowa as a state only requires a state electrical contractor's or journeyman's license (under the supervision of an EC) to install solar.