Now that we have the foundation laid on the Solar Policy in Goa, let’s look into details of a particular procedure which is extremely important for the success of a Rooftop Solar Power plant in India: Metering (Gross and Net).
Why the two are important is simple-
- it allows virtual banking of power
- it controls wastage of power by interacting with grid
- for areas that don’t have too many power cuts, it avoids the need to attach a battery to the system
- It reduces your dependence on the grid
The regulations/guidelines for Goa were setup in May 2015 and can be accessed here (refer).
Projects above the size of 500 kW will only be considered by DISCOMs based on the stability of the grid with higher rating Rooftop Solar Projects. Following are a few General, Net and Gross Metering Highlights
- Fee for setting up plant: INR 50/ kW
- Late payment fee: 1.25% for every month’s delay in payment of bill
- Rebate: 2% if bill is paid within 5 days of receiving bill; 1% if bill is paid within 30 days but after 5 days
- DISCOMs will allow net-metering projects on a first come-first serve basis with applications with subsidy given higher preference
- Billing will be done based on the total import and total export of energy units on a monthly basis and excess exported units (more than consumption) will be carried forward to the next billing cycle
- In case the roof owner is under time of day tariff, the electricity consumptions will be first off set in those specific time blocks when generation took place and in case of excess, that would be counted under ‘off-peak time-block’
- Twice in a year (30thSept and 31st Mar), all excess units (if any) will be settled by the DISCOM based on the tariff order of that years (refer). Most other states have an annual settlement.
- The Power Producer will be expected to raise a bill once every 2 months which will be paid by the distribution licensee within 30 days. Assuming that a few residential owners will also want to make use of this scheme, I am not sure how they would raise an Invoice. A format should be prescribed by the commission so the roof owners feel more confident about this policy
- There is one interesting concept that has been introduced in the regulations by JERC which is quite unique to Goa. The ‘gross-metered’ connection may wheel the power to another service connection instead of exporting to the grid. This would solve the problem of an unavailable roof for installing solar. In doing so, the service connection will first receive its power from this power plant and then draw from the grid if need be. Also, if the service connection does not need power, the power is fed to the grid. I’ll try to explain it with a diagram
If as an end customer, you feel ready make use of the sun and get power for yourself in your house, Ezysolare would be happy to assist you. You may get an estimate of your solar power system here. Also, as an Installer, if you have projects and waiting to get metering arrangement done, you may mail us here with your query.