According to reports, the long wait of power consumers, who had installed solar rooftop photovoltaic systems, for net metering facility, will soon be over. The Tamil Nadu Electricity Regulatory Commission (TNERC) has issued a draft order on net-metering facility, which would enable the solar rooftop generators to supply excess power to the grid.
The order says the consumer should instal two meters — one to record solar power generation and another bi-directional meter replacing their existing meter, at their own cost. Tangedco would publish the list of approved meter manufacturers on their website.
Domestic and commercial consumers who had installed rooftop PV system, were a worried lot as they could not export the excess power to the grid has announced in the TN solar energy policy.
A senior Tangedco official said they expect a final order on net metering and new solar tariff for various categories in a month’s time. “The consumer will be able to supply excess solar power to the grid and claim power credit with the net-metering facility,” the official said.
The Tamil Nadu Electricity Regulatory Commission (TNERC) has fixed a cap for the electricity generated from a solar rooftop system at 200 per cent of the electricity consumption by the consumer at the end of a settlement period.
In the draft order on net metering, LT connectivity and renewable energy certificate, TNERC said, “From the perspective of the distribution utilities, net metering leads to reduction in consumption by existing consumers, which is seen as negative.
Accordingly, it is recommended that electricity generated from a solar rooftop system shall be capped commercially at 200 per cent of the electricity consumption by the eligible consumer at the end of a settlement period.”
If a solar rooftop consumer injected more into the grid than consumption, the energy generated would be treated as power credit and carried over to the next billing cycle, the draft said, adding that the settlement period for final settlement of net-metered energy should be 12-month period from August to July, the draft order said.
“The settlement period is fixed considering the consumption pattern for domestic consumers vis-a-vis the seasons in Tamil Nadu. Any excess generation after adjustment at the end of the settlement period shall be paid by the distribution licensee (Tangedco) at 75 per cent of the solar tariff fixed by the commission,” the draft order said.