EV Charging Ecosystem: The Role of Smart Grids and Demand-Side Management

A well-developed EV charging ecosystem with smart grids and DSM strategies offers a multitude of benefits

The electric vehicle (EV) revolution is gaining momentum, driven by environmental concerns and technological innovations. However, integrating a growing number of EVs with the power grid presents challenges due to the intermittent nature of renewable energy sources when the grid works on stable inputs. Yet smart grids have started to emerge as a solution, harnessing advanced technologies to optimise the synergy between EVs and renewables.

Current State of the Smart Grid Market

Research and Markets projects a robust growth trajectory for the smart grid market, with a projected CAGR of 17.76%. By 2026, the market is expected to reach a substantial valuation of $92.107 billion, up from $29.336 billion in 2019. This significant expansion is attributed to the increasing adoption of innovative smart grid technologies worldwide. The advanced metering infrastructure segment is poised for significant expansion, driven by the widespread adoption of smart grid technologies. Governments, particularly in developing and emerging economies, view smart grids as strategic infrastructure investments essential for long-term economic development and achieving carbon emission reduction targets.

Fig 1: A fast-charging station. Image by Electric Era

Challenges in Charging Electric Vehicles

Charging EVs presents challenges such as grid strain during peak periods and the need for efficient energy management. Without proper planning and infrastructure, simultaneous charging of numerous EVs can overload the grid. Smart grids mitigate these challenges through intelligent charging algorithms and load management techniques.

Smart grids and two-way street smart grids offer a solution by introducing a two-way communication between the grid and its components, including EV chargers. This communication allows for real-time monitoring, dynamic control, and integration of various elements. Here’s how smart grids empower an efficient EV charging ecosystem:

Demand Response Programs: Smart grids enable utilities to implement demand response programs. These programs incentivize EV owners to charge their vehicles during off-peak hours (typically nights) when electricity demand is lower. This can be achieved through time-varying /time-of-day (ToD) electricity rates, where charging during off-peak hours is cheaper.

Grid Stability and Power Quality: Smart grids employ advanced monitoring and control systems to ensure grid stability when integrating a large number of EVs. These systems can dynamically manage the charging load, balancing power supply and demand in real-time. This not only prevents blackouts but also helps maintain consistent power quality for all users.

Integration with Renewables: The rise of renewable energy sources like solar and wind power is crucial for a sustainable future. However, these sources are intermittent by nature. Smart grids can optimise EV charging based on real-time renewable energy availability. For instance, EVs can be charged during periods of high solar or wind power generation, further reducing reliance on traditional power plants.

Demand-Side Management: Optimising charging behaviour DSM is a set of strategies that encourage consumers to modify their electricity usage patterns. In the context of EV charging, DSM focuses on shifting charging away from peak hours. Here are some key DSM strategies for EV charging:

Smart Charging Stations: These stations communicate with the grid and automatically adjust charging rates based on grid conditions and user preferences. For instance, a station could prioritise slower charging during peak hours and offer faster charging options during off-peak hours.
Vehicle-to-Grid (V2G) Technology: V2G technology allows EVs to act as distributed energy storage units. When plugged in, EVs can not only receive but also feed power back to the grid during peak demand periods. This not only helps stabilise the grid but also creates a potential revenue stream for EV owners.
Home Energy Management Systems (HEMS): HEMS can integrate EV charging with other household appliances. By monitoring overall home energy consumption, HEMS can optimise EV charging to minimise peak demand and potentially reduce electricity bills.

Fig 2: An electric vehicle charging point. Image Getty

Benefits of a Smart EV Charging Ecosystem

A well-developed EV charging ecosystem with smart grids and DSM strategies offers a multitude of benefits:

Reduced Grid Strain: By shifting charging away from peak hours, the grid experiences less stress, lowering the risk of blackouts and the need for expensive grid upgrades.
Cost Savings: DSM programs and time-varying electricity rates can incentivize off-peak charging, leading to lower electricity costs for both utilities and EV owners.
Integration of Renewables: Smart charging based on renewable energy availability can maximise the use of clean energy sources, reducing reliance on fossil fuels and promoting a more sustainable grid.
Enhanced Grid Resilience: V2G technology allows EVs to act as distributed energy storage, providing additional grid stability and resilience during outages or other disruptions.

Challenges and the Road Ahead

Despite the numerous benefits, implementing a smart EV charging ecosystem faces certain challenges:

Infrastructure Investment: Modernising the grid infrastructure with smart technologies requires significant investments. Collaborative efforts between governments, utilities, and private companies are essential.
Standardisation: Standardisation of communication protocols and data formats across different charging stations and vehicles is crucial for seamless integration within the smart grid.
Consumer Behaviour: Encouraging widespread adoption of DSM programs and smart charging practices requires effective communication and education for consumers.

Conclusion

In addition to the challenges mentioned above, cybersecurity considerations and supportive government policies are also crucial for a robust smart grid ecosystem. As technology advances and governments worldwide prioritise sustainable transportation, smart grids will continue to evolve, shaping the future of transportation towards a cleaner and more efficient tomorrow.

Manjula Girish is the Business Head - EV Charging and Photovoltaic Inverter division of Delta Electronics India

Sr. No	Vehicle segment	Incentive available	Number of vehicles to be incentivised	Maximum incentive per vehicle
1	e-2W (L1 & L2)	INR 5000/kwh	1,00,000	10,000
2	e-3W autos (L5M)	INR 5000/kwh	15,000	30,000
3	e-3W goods carrier (L5N)	INR 5000/kwh	10,000	30,000
4	e-4W cars (M1)	INR 5000/kwh	10,000	1,50,000
5	e-4W goods carrier (N1)	INR 5000/kwh	10,000	1,00,000
6	e-buses* (SRTu)	10% vehicle cos (ex factory)	1000	20,00,000

Road Tax / Vehicle Registration Fees	Manufactured within the State	Manufactured outside the State
Exemption on Road Tax	100% exemption for first 10,000 buyers 75% exemption for 10,001-15000 buyers 25 % exemption after 15000 buyers upto policy period	25% upto policy period
Exemption from Vehicle Registration Fees	100% exemption for first 10,000 buyers 75% exemption for 10,001-15000 buyers 25 % exemption after 15000 buyers upto policy period	25% upto policy period

S No	Type of PCS/SPCS	Incentive amount	Maximum Incentive available per PCS/SPCS	Max number of PCS/SPCS to be incentivised
1	Slow	60% of the cost	INR 10,000	15,000
2	Moderate/Fast	50% of the cost	INR 5,00,000	500
3	Solar Based fast#	70% of the cost	INR 7,00,000	500

Type of Unit	Max Limit	Max Admissible Subsidy
Micro	30% of FCI	Rs 2 Cr
Small		Rs 7 Cr
Medium		Rs 15 Cr
Non MSME		Rs 30 Cr

Sr No	Vehicle Segment	Incentives
1	Assured Buyback,	6% of total vehicle cost capped at INR 10,000/-
2	Battery warranty of at least 5 years	4% of total vehicle cost capped at INR 6,000/-

EV Charging Ecosystem: The Role of Smart Grids and Demand-Side Management

Manjula Girish

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Manjula Girish

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Vehicle Category	Incentive	Maximum Incentive	Number of Electric Vehicles to be incentivized
e-Bicycle	Upfront: 25% of Cost of Bicycle	Rs. 3,000	First 25,000 Bicycle purchased during the policy period
e-2W	Upfront : Fixed Battery: Rs. 5,000/kWh Swappable Battery: Rs. 3000/kWh Scrapping : Rs 5,000	Rs. 30,000 Rs. 15,000 Rs. 5,000	First 10,000 vehicles registered during the policy period
e-Cart	Upfront : Fixed Battery: Rs. 5000/kWh Swappable Battery: Rs. 3000/kWh Retrofit Kit: 15% of cost	Rs. 30,000 Rs. 10,000 Rs.10,000	First 1000 e-Carts registered during the policy period
e-Autos	Upfront : Fixed Battery: Rs. 5000/kWh Swappable Battery: Rs. 3000/kWh Retrofit Kit: 15% of cost Scrapping : Rs 7,500	Rs. 30,000 Rs. 15,000 Rs. 15,000 Rs. 7,500	First 1000 e-Autos registered during the policy period
e-Goods Carrier L5N	Upfront : Fixed Battery: Rs. 5000/kWh Retrofit Kit: 15% of cost Scrapping: 15,000	Rs. 50,000 Rs. 15,000 Rs. 15,000	First 1000 Goods Carrier L5N registered during the policy period
e-Goods Carrier N1	Upfront: Fixed Battery: Rs. 5000/kWh Retrofit Kit: 15% of cost Scrapping: 15,000	Rs. 80,000 Rs. 25,000 Rs. 15,000	First 1000 Goods Carrier N1 registered during the policy period
4 W- e-Cars (Personal)	Upfront: Fixed Battery: Rs. 5,000/kWh Scrapping: 7000	Rs. 1,50,000 Rs. 7,000	First 2000, 4 W- e-Cars (Personal) (including Hybrids as defined in FAME II) registered during the policy period. Applicable only for vehicles with ex showroom price below INR 20 lakhs
4 W- e-Cars (Commercial)	Upfront: Fixed Battery: Rs. 10,000/kWh Scrapping: 7000	Rs. 2,00,000 Rs. 7,000	First 1000, 4 W- e-Cars (Commercial) (including Hybrids as defined in FAME II) registered during the policy period

Vehicle Category	Early Bird Incentive	Maximum Early Bird Incentive
e-Bicycle	Rs. 2000	Rs. 2,000
e-2W, e-Cart, e-Autos, e Goods Carrier (L5N and N1), e-4W (personal & commercial)	Rs 3,500/kWh	Rs. 50,000

Category	Incentive	Maximum Incentive
Private Charging	Infrastructure Incentive: Grant on purchase and installation of charging equipment	Rs. 6,000	Only for the first 30,000 private chargers installed during the policy period.
Public Charging	Reimbursement of GST paid 100% reimbursement of GST paid on the Fast Charging/Swapping Electric Vehicle Supply Equipment (EVSE) procured by private enterprises/individual	Rs. 50,000	Only for the first 50 fast charging /Swapping EVSE installed during the policy period. (Will not be applicable on Chargers under Central Subsidy)
	Upfront electricity infrastructure: Upfront cost on infrastructure for bringing power supply to Electric Vehicle Charging Station	Rs. 5,00,000	Only for the first 50 Public fast Charging/Swapping Stations installed in the state during the policy period. (Will not be applicable on Chargers under Central Subsidy)
	Electricity Duty Exemption: 100% Electricity duty exemption for Public Charging and Swapping stations	For policy period	For policy period

Sr. No	Classification of EV	2022-23	2023-24	2024-25	2025-26	2026-27	Total
1	2W	2,000	8000	20,000	54,000	85,000	1,69,000
2	3W	200	800	2000	4,000	10,000	17,000
3	4W(Non Commercial)	100	400	1400	3,000	7,000	12,000
4	4W(Commercial)	10	40	100	300	650	1,100
5	Buses	10	25	65	200	600	900
	Total						2,00,000

Sr No	Vehicle segment	Ceiling for Early Bird	2023 – 2027
1	2W	35	172
2	3W(E-Rickshaw/ E-Cart)	10	40
3	3W	10	40
4	Car(Including Taxis)	40	167
5	Bus	11	49
6	E-4w ([CV, Stage Carriage/Maxi Cabs)	10	41
Total	–	116	509

Sr No	Vehicle Segment	Subsidy (Whichever Is Lower)	Maximum ExShowroom Price to Avail (INR)
1	Two-Wheeler	10% of the Ex-Showroom Price or INR 15,000	1,50,000
2	Three-Wheeler – e Rickshaw / e-cart	10% of the Ex-Showroom Price or INR 30,000	3,00,000
3	Three-Wheeler	10% of the Ex-Showroom Price or INR 50,000	5,00,000
4	Car	10% of the Ex-Showroom Price or INR 2,50,000	25,00,000
5	Bus	25% of the Ex-Showroom Price or INR 50,00,000	2,00,00,000
6	E-4w ([CV, Stage Carriage/Maxi Cabs)	10% of the Ex-Showroom Price or INR 3,00,000	30,00,000

Sr No	Vehicle Segment	Subsidy (Whichever Is Lower)	Maximum ExShowroom Price to Avail (INR)	No of EVs to be subsdised
1	Two-Wheeler	20% of the Ex-Showroom Price or INR 60,000	1,50,000	28
2	Three-Wheeler – e Rickshaw / e-cart	20% of the Ex-Showroom Price or INR 60,000	3,00,000	10
3	Three-Wheeler	20% of the Ex-Showroom Price or INR 1,00,000	5,00,000	10
4	Car	20% of the Ex-Showroom Price or INR 5,00,000	25,00,000	33
5	Bus	50% of the Ex-Showroom Price or INR 1,00,00,000	2,00,00,000	11
6	E-4w ([CV, Stage Carriage/Maxi Cabs)	20% of the Ex-Showroom Price or INR 6,00,000	30,00,000	9
Total				101

Sr No	Vehicle segment	Number of EVs	State subsidy
1	2W	100	Rs.10,000/- per Kwh of battery capacity subject to a maximum of Rs.30,000/- per vehicle.
2	3W	50	Rs.10,000/- per Kwh of battery capacity subject to a maximum of Rs.50,000/- per vehicle.
3	4W	50	Rs.10,000/- per Kwh of battery capacity subject to a maximum of Rs.2,00,000/- per vehicle

Sr. No	Owner of PCS	Subsidy
1	Retail Outlet of Oil Marketing Companies	15% of the cost of putting up Public Charging Infrastructures and Stations will be reimbursed by the State Govt. in the form of subsidy/ incentive.
2	Local Entrepreneurs	25% of the cost of putting up Public Charging Infrastructures and Stations will be reimbursed by the State Govt. in the form of subsidy/ incentive

Category of vehicle	% Of subsidy	The maximum amount of subsidy
Electric Two-wheelers	15%	Rs. 5000/-
Electric Three-wheelers	15%	Rs.12,000/-
Electric Four Wheelers	15%	Rs. 1,00,000/-

Criteria	Threshold Value
Min. top speed	40km/hour
Min. acceleration	0.65m/s2
Max. electric energy consumption	Not exceeding 7kWh/ 100km
Warranty	At least 3 years comprehensive warranty including that of battery from the manufacturer

Criteria	Threshold value
Min. top speed	40 km/hr
Min. acceleration	0.65 m/s2
Max. electric energy consumption Not exceeding	7 kWh/100km
Warranty	At least 3 years comprehensive warranty including that of battery from the manufacturer

EV Segment	Demand Incentives
Electric 2-wheeler	Purchase incentive of Rs. 5,000/- per kWh of battery capacity; Maximum incentive of Rs. 30,000/- per vehicle Incentive for scrapping and de-registering old ICE two wheelers registered in Delhi: Up to Rs. 5,000/- of the incentive shall be reimbursed by the GNCTD All delivery service providers shall be expected to convert 50% of their fleet operating in Delhi to electric by 3V March, 2023 and 100% by 31st March, 2025.
E-Autos	Open permit system shall be applicable & be given on first-come-first-serve basis; no cap on permits issued to e-autos in Delhi Purchase Incentive of Rs. 30,000/- per vehicle shall be provided by GNCTD Interest subvention of 5% on loans and/or hire purchase scheme for the purchase of an e-auto Incentive for scrapping and de-registering old ICE auto rickshaws registered in Delhi: Up to Rs. 7,500/- of the incentive shall be reimbursed by the GNCTD The auto-rickshaw permits linked to the de-registered ICE vehicle can be surrendered and exchanged for an e-auto permit at no additional cost.
E-rickshaws & E-carts	Purchase Incentive of Rs. 30,000/- per vehicle shall be provided by GNCTD Interest subvention of 5% on loans and/or hire purchase schemes Buses
E-buses	Pure electric buses shall constitute at least 50% of all new stage-carriage buses (i.e., for all public transport vehicles with 15 seats or more) procured for the city fleet including for last-mile connectivity Induction of 1000 pure electric buses by 2020
Goods Carriers	A Purchase Incentive of Rs. 30,000/- to the first 10,000 e-Carriers to be registered in Delhi after the issuance of this policy. Interest subvention of 5% on loans and/or hire purchase schemes. Incentive for scrapping and de-registering old ICE goods carriers registered in Delhi: Up to Rs. 7,500/- of the Incentive shall be reimbursed by the GNCTD Goods carriers (i.e., L5N and N1 type)
Four wheeler	Purchase Incentive of Rs. 10,000/- per kWh of battery capacity Maximum incentive of Rs. 1,50,000/- per vehicle to the registered owners of the first 1000 e-cars to be registered in Delhi after the issuance of this policy

Vehicle Segment	Max vehicle to be supported	Approx. battery size	Approx incentive @10,000 per kWh
Electric 2 wheeler	24,000	2 kWh	20,000/-
Electric 3 wheeler	70,000	5 kWh	50,000/-
Electric 4 wheeler	4000	15 kWh	150,000/-
4 wheeler (SHEV)	1000	1.3 kwh	13,000/-
Electric bus	1000	250 kwh	25,00,000/-

Vehicle Segment	Incentive Available ( INR)	No. of Vehicles to be Incentivized	Maximum Incentive per Vehicle (INR)
Electric Two Wheeler (L1 & L2)	5000/kwh	1,00,000	10,000
Electric 3 Wheeler autos (L5M)	5000/kwh	15,000	30,000
Electric 3 Wheeler goods carrier (L5N)	5000/kwh	10,000	30,000
Electric 4 Wheeler cars (M1)	5000/kwh	10,000	1,50,000
Electric 4 Wheeler goods carrier (N1)	5000/kwh	10,000	1,00,000
Electric buses	10% of vehicle Cost	1,000	20,00,000

Vehicle Segment	Scrappage Incentive
Electric Two-Wheeler	INR 7,000
Electric Three-Wheeler	INR 15,000
Electric Four Wheeler	INR 25,000

Incentives Description	Incentives
Assured Buyback	6% of total vehicle cost capped at INR 10,000/-
Battery warranty of at least 5 years	4% of total vehicle cost capped at INR 6,000/-

CHARGING STATION	Incentive
Small Charging Stations	Capital Subsidy of 25% of the value of the charging equipment/machinery for first 300 charging stations up to a Maximum subsidy of INR 1,50,000
Medium Charging Stations	Capital Subsidy of 25% of the value of the charging equipment/machinery for the first 100 stations up to a Maximum subsidy of INR 2,00,000.
Large Charging Stations	Capital Subsidy of 25% of the value of the charging equipment/machinery for the first 100 stations up to a Maximum subsidy of INR 10,00,000.

Vehicle Segment	State Subsidy Amount (in Rs.)	Max ex-factory price to avail incentive (in Rs.)
2 wheeler	Rs. 10,000/- per kWh	1,.50,000
3 wheeler	Rs. 10,000/- per kWh	5,00,000
4-Wheeler	Rs. 10,000/- per kWh	15,00,000

Vehicle Segment	Battery Size in KWH (approx.)	State Subsidy Amount(Rs.)	Total State Subsidy (Rs.)	Maximum ex-factory price to avail incentive (Rs.)
Electric Two wheeler	2 KWH	10000/- per kWh	20000/-	1,50,000
Electric Three wheeler	5 KWH	10000/- per kWh	50000/-	5,00,000
Electric Four wheeler	15 KWH	10000/- per kWh	150000/-	15,00,000