on-grid PV solar, hydro and wind systems

Grid-connected systems - either PV solar systems, hydro or wind powered systems - have some significant advantages over stand-alone systems.

On-grid Systems Advantages

On-grid wind and solar systems can avoid the electric disruptions and the battery systems (and the costs) demanded by stand-alone systems. That's their great advantages.

Another possible and also significant advantage is that through grid-connection you can store the energy surpluses on the grid, and get them back whenever necessary. And eventually you can sell the excess generation.

Selling the excess generation

If the capacity of your wind or PV solar system allows you to store more electricity in the grid than the one you get from it, the utility or electric provider may buy the excess generation: law doesn't demand it, but many agreements are considering that purchase.

See for more information on Net Metering and its rules: Net Metering

On-grid agreements

Connecting a PV solar system or a wind or small hydro system to an electric grid involves a net-metering agreement and some standards and requirements that you should take into account.

See, for details: Solar and Wind Systems and Net Metering

Technical Requirements

On-grid systems require some simple elements and procedures: a bi-directional meter, and standard performance and safety norms. Fees, inspections, certifications and requirements vary a lot from state to state.

See for more information on Net Metering and its agreements:
Codes and Legal Requirements for Small Renewable Systems
Requirements for grid-connected systems
Hydro Power Systems and Water Rights
Solar Power Systems Requirements
Wind Power Systems Requirements
Net Metering