Diagram of Solar roof top net metering system

Roof Top Solar Power Net Metering Solution

Rooftop spaces and small areas around residential, commercial and Industrial buildings are high potential areas for Renewable power generation like Solar and Wind energy. Small quantities of power generated by each  buildings or any other type of building can be used to partly fulfill the requirement of the building occupants and surplus, if any, can be fed into the grid. The distribution companies will allow power to feed into the grid and extending net metering facility to the consumers.

1. Net Metering arrangement is permitted for 3 Phase connections only. The interconnection schematic is enclosed in Appendix A to these guidelines.

2. Consumers can avail Government of AP subsidy and MNRE subsidy, as applicable, in installation of solar power net metering solutions through NREDCAP.

3. Entire circuitry (Appendix A), including panels, inverter, bidirectional meters, cabling, manual switch, safety circuit breaker etc., should be installed by the vendor under a turnkey approach.

4. Mandatory safety precautions/features which have to be installed as part of SPV system are:
i. Certified Inverter controlled relays which can trip on grid failure and thus prevent any solar power injection to Grid when there is no power in Grid.
ii. Solar Circuit should be separately grounded/ earthed.
iii. Additional switchgear/relay (sensing phase-angle shift) required as a second rung of safety. It shall be positioned between interconnection point and the bi-directional meter
iv. Harmonics suppression/Filtering feature in the inverter for local network’s safety and for accurate measurement of energy.

ADVANTAGES

• Utilization of vacant rooftop for power generation.
• Can generate power for self-consumption and feed excess power to the Grid.
• Provision for settlement of registered surplus energy fed to the grid on a half yearly basis.
• Surplus energy injected shall be considered for payment by the DISCOM at pooled cost

INCENTIVES

1. Central Financial Assistance up to 30% of the system cost may be provided by MNRE as per the prescribed eligibility criteria.

2. The State Govt. will provide 20% subsidy for installation of roof top system up to 3 KW capacity in domestic sector only. This will be in addition to that eligible Central Financial Assistance.

3. Surplus energy injected by Solar Roof Top/Small Solar PV generator shall be considered for payment by concerned APDISCOMs at pooled cost as may be decided by APERC for that year.

4. The payment of pooled cost will be made effective for a period of 7 years from the date of establishment of such SPV plant.

5. The settlement of registered surplus energy will be carried out on a half yearly basis.

Source: Nedcap & adnpcl

Completely Independent.. Going off the Grid

Hydrogen fueling station opens in Norway with Hydrogenics electrolyzers

The city of Oslo inaugurated a hydrogen fueling station which uses two Hydrogenics HySTAT™ electrolyzers to convert renewable electricity to hydrogen fuel.

Funding for the project came from Ruters, a public transport company, as well as from the European CHIC programme and additional national funding.
 
The construction of the station was awarded to Air Liquide, who will operate and maintain the site for five years. Hydrogenics supplied two HySTAT™ 60 electrolyzers that produce hydrogen fuel from water and electricity. The station will produce up to 260 kg of hydrogen per day, which will be used to fuel five Van Hool buses operating on a normal transit line from Roseholm to the Royal Palace. It is anticipated that the 13 meter-long buses will run between 400,000 and 450,000 kms over the next five years.

Electricity at the station is guaranteed to come from 100% renewable energy sources.

 

Energy Efficiency Indicators

Energy efficiency is when something delivers more output as services or production for the same energy input, or the same services or production for less energy input. For example, when a compact florescent light (CFL) bulb uses less energy than an incandescent bulb to produce the same amount of light, the CFL is considered to be more energy efficient. For more information

Energy efficiency indicators are useful for  policy makers to determine where energy savings can be made.

Economic and human activity, energy use and CO₂ emissions are determined by energy efficiency indicators. Many IEA member countries already employ energy indicators, a set of disaggregated measures of how energy is used. The IEA role is to assist and co-ordinate countries’ efforts through the maintenance of transparent international databases, the development of state-of-the-art energy indicators and collaboration with other international organisations.

The IEA has since 1997 developed a series of energy indicators to study energy-use developments and analyse factors behind changes in energy use and CO₂ emissions. Energy indicators (and the underlying databases) reveal key relationships between energy use, energy prices and economic activity. This insight is crucial when assessing and monitoring past and present energy policies, and for designing effective future action. This work on indicators also aims at increasing the transparency, quality, completeness and timeliness of energy-related data.

Source: IEA

Industrial Electricity Rates Graph: India, China and the US

India has one of the highest industrial electricity rates in the world, exceeding those in the US, in most developing countries and in the Organization for Economic Co-operation and Development (OECD), both in absolute terms and much more so on a PPP basis.24 This is largely to finance subsidies to low income households and agriculture. Electricity-intensive industries have responded by generating electricity themselves, but have also been forced to economize on electricity use, since all fuel prices have increased since the nineties.
Source: Prayas Energy Group, Pune

Earth: Renewable Energy resources

Renewable energy experts often trying determine the total energy potential of Earth and proclaim that renewable energy resources are essentially infinite.We are surrounded by incredible amounts of diffuse renewable energy resources like Solar, Wind, Geothermal, Ocean energy, etc. Unfortunately, however, this energy is useless to us unless it is concentrated into forms such as electricity or fuels.

Source: The energy collective