Net metering Framework

Net metering, in essence, with respect to the Electricity (Net metering framework) of 2017  it  allows to produce and utilize power primarily for own consumption to “bank” or “store” the electricity in times of over-production (e.g. for solar energy during peak production in the day) in the national grid, and to balance out their grid consumption with this banked or stored electricity during other times (e.g. during night, morning and evening hours).The concept is presented.  Adapted from GIZ 2011.

  • Net Metering Project at St Gasper Hotel Mogogoro.

In this project the net metering is based  on Solar  PV  generator owner, who is also the electricity consumer for the utility . The electricity generated by the system is first used to service consumer’s captive load within the owner’s premises. The solar power generated in excess of the owner’s electricity consumption is fed into the grid through a net-meter, which is a bi-directional energy meter capable of registering both import and export of electricity. This net generation is then credited to the owner’s account and adjusted subsequently against imports from the grid.

The distribution licensee allow non-discriminatory net-metering arrangement on first come-first serve basis for both self-owned and third party owned PV systems as long as the total capacity (in MW) does not exceed the target capacity determined by the EWURA as given in its regulations.

Net-metering facility  extended to the solar power system installed in consumers connected to the electrical grid. These consumers are the “eligible consumers” for the purpose of net-metering. Interconnection framework for net-metering it address parameters including connecting voltage level, any minimum technical standards for interconnection as indicated by the EWURA  regulations  and  as adopted  from Delhi Electricity Supply Code, 2007 and as per technical standards for Connectivity of  Distributed Generation resources Regulations 2013 notified by Central Electricity Authority.

  • Billing and Payment.

The consumer receive a net import/export bill indicating either net export to the Grid or net import from the Grid. In case of net import bill, i.e. electricity supplied by the distribution licensee  exceeds the electricity generated by the eligible consumers solar PV system, the distribution licensee shall raise invoice for the net electricity  consumption after taking into account any carry forward from previous billing periods in the same financial year. The consumer shall settle the same as per existing norms. If it is a net export bill, then credit amount shall be carried forward to next month for adjustment against next month’s import bill. No interest will be payable on this credit forward amount.

If the eligible consumer is under the ambit of time of day tariff, the electricity consumption in any time block peak, off-peak or normal shall be first set off with the solar generation in the same time block. Any excess generation over consumption in any time block, over and above the usage in that time block shall be adjusted at the lowest applicable tariff across all the slots. This will safeguard the interest of the utility.

  • Bi-Directional Metering Requirements.

These Standards and Requirements were Adopted from BESCOM and confirmed by General Manager  Meters and  Commercial Section, Corporate Office India Utility Company (BESCOM),Bangalore.