Please enter any O&M costs associated with your project.
Operations and Maintenance (O&M) encompasses all of the activities that will ensure maximum generation from the system throughout its life, including routine maintenance, minor part replacement, and emergency repairs. Solar without battery storage tends to require little maintenance. You do not need to brush off the snow or clean the modules from soot or dust. Production losses due to snow cover and dirt should be included in the power generation estimates provided by your contractor. In fact, the rain and snow tend to help keep the modules fairly clean. It is recommended to inspect the system once annually, looking for loose wiring or modules or other pieces that aren’t working properly.
If you have small staff, have personnel that are already stretched thin, and/or are worried about maintenance requirements, you can often discuss maintenance options with your contractor. Depending on the level of coverage, the cost of O&M is usually in the $10-$25/kW/year range. Contracts can be implemented for durations ranging from a single year up to the expected life of the system. For more detail, explore NREL’s Model of Operations-and-Maintenance Costs for Photovoltaic Systems.