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If you are considering solar energy as a source of electrical energy (PV systems), take the following steps into account:
- Acquire data on the local natural potential of available solar energy, from the local meteorological stations (monthly average of energy solar radiation, monthly average of temperature)
- Determine whether the site is suitable in terms of absence of overshadowing, and availability of a mounting location with suitable inclination
- Determine the annual energy consumption (based on daily consumption for winter and summer time) for your application (electric loads considered for connection to the solar energy system)
- Determine the type of PV plant (stand -alone or grid-connected) and for grid-connection the local availability of feed -in tariffs
- Determine (based on the simplified method for sizing a photovoltaic system outlined below), the adequate configuration for your application: the number of PV modules, the configuration of arrays and strings, the capacity of storage batteries, the type of inverter)
- If you still have doubts, seek advice from a specialist
- Contact several equipment suppliers, requesting offers based on clearly defined requirements
- Analyse the offers received and select the offer with the best prices and good quality equipment
- Order the equipment, receive and check the delivered goods
- Determine the most suitable location for installation
- Acquire minimum technical knowledge based on the technical data sent by the equipment suppliers, which should enable you to operate and maintain the system in good condition
- Install the equipment. Low power systems can be mounted without a specialist. High power systems, that are technically more complex, should be installed by qualified persons and companies
- Put the system into operation, operate and maintain it.
 Simplified method of sizing a photovoltaic system
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