Demand Side Management Emerging Trends Including Smart Grid initiatives BRPL, DELHI

BSES Delhi Discoms – A Synopsis NDPL Reliance Infrastructure Ltd. acquired 51% stake in July 2002 in two Discoms BYPL BRPL MES NDMC SN Particulars Unit BSES Delhi Discoms 1 Area sq. km 750 2 Total Registered Customers million 1.72 3 Peak Demand MW 2068 4 Consumption per year MU 10,500 5 Employees ( Regular) Nos. 4000 6 Customer Density Cons/sq km 2,300 7 Turn Over Rs. Crs. 6700

Smart Grid Initiatives Technological innovations The customers expectations and DISCOM concerns revolve around Cost of supply, Reliability and Quality of supply and services to Consumers. Cost of Supply Customer Services Reliability of Supply Quality Smart Grid Initiatives Technological innovations Involve Consumers Supply availability and reliability can be solved by involving consumer - DSM

BSES Philosophy – Understanding DSM It can be done by …………. Reduction of load at peak & By shifting/ adding load When energy is surplus. Philosophy ……….. Tuning consumer load. To ensure optimum utilization of deliverable energy. DSM is by the Consumer, for the Consumer. So, their Involvement is must. Online comprehensive & user-friendly platform to customers for gathering information and submitting queries and complaints GAP and NON availability in grid – BIG Concern

Defining Peak………. Key Terms Absolute peak Relative peak Power Shortage Generation Capacity Risk Of Shortage Load Curve Under Utilization Key Terms Absolute peak Relative peak

Increase Generation or DSM…….. to cater increase in Incremental Peak Input Growth of Delhi Increase Generation or DSM…….. to cater increase in Incremental Peak

What are the Concerns The peak demand is growing every year…….. This means more PPA and power purchase tie up Ratio of peak demand and energy consumption is not moving in favorable direction……….. More energy available for sale during non peak RPO …… Such PPA may not help in meeting peak demand The average cost of electricity is going up, as shortage during peak and surplus during non peak Peak and non peak affecting electricity quality Not able to amend long term PPA

Typical BRPL Peak curve

So there is a need to flatten the load curve Need of Hour So there is a need to flatten the load curve 9

Additional generation DSM methods ……. Energy Conservation Demand Shift Consumer Load Control Energy Source shift Input control Factor need Considerations: Impact during lean period Cost of Investment and ROI Ensuring consumer involvement Additional generation is not DSM

BRPL Green Club in line with DSM philosophy for consumers DSM Initiatives – Emerging Trends Load control Demand response Legislation about efficiency Tariff Green Club Awareness Consumer display Google Power meter ESCO Services DSM Emerging Trends Energy Conservation ESCO services Alternate fuel Efficient product Tariff Technology Smart Grid Role of voltage Technical loss reduction Energy storage Single stage privatization -No stabilization time for Discoms BRPL Green Club in line with DSM philosophy for consumers

Energy conservation, Tariff & storage are basic steps DSM Key Initiatives Awareness Consumer display Google Power meter Load control Demand response Green Club Smart Grid Facilitate DSM Few Key initiatives Energy Conservation Technical loss reduction Legislation about efficiency Technology Role of voltage Single stage privatization -No stabilization time for Discoms Energy conservation, Tariff & storage are basic steps

Consumer Awareness Awareness The basic need for DSM Awareness about need of DSM Awareness about own consumption pattern Cpower a leading display company, claims 15% Consumption reduction Trend Involvement of society – initiation by Regulator Portable/ web base display about pattern In Britain – legislation about meter with display Consumer can log onto Power Meter Gmail ID and password is required Methodology Awareness program arrange by NGO/ Universities. cost of awareness – highly subsidized by Govt. BRPL, Reliance Group company installed Google meters for trial. In 2007, CFL promotion was highly successful. Still RWA demand for it

Customer Interactive Display – Google Power Meter Real Time energy flow Weekly energy consumption Smart Grid technology promotes consumer involvement through data sharing

Demand Response BRPL DR Program Facilitator to coordinate DR Capacity 25 MW Availability …… 100 Hrs/ year Typical cost 4.75Rs/ KWh . Only for volunteers incentive for consumers. Response time .. 30 Mins Demand response (load response) is “reduction of electricity use by end-use customers in response to power grid needs, economic signals from a competitive wholesale market or special retail rates” Provide opportunities for end-use customers to realize value for reduction in demand Demand response can compete equally with generation markets

Demand Response Why becoming popular It is a virtual generation system – Most environment friendly. 100% contribute when network is on stress. A true peak curtailing mechanism Leads towards energy Conservation. Consumer become knowledgeable as how to reduce consumption. Totally Volunteers based Demand response cannot be compared with load shedding DR helps in reducing peak technical loss DR need policy support Can DR Negawatt can be compared with renewable energy = DR obligation

Green Club – Demand Response extension A retrofit devise to control load remotely or based on logic Only for volunteers – for medium load consumers Disconnection of non essential loads – on demand Once Smart Grids are installed – easy to carry Green club

Green Club – Demand Response Extension Application – Non essential load Pumping motors Gallery lights Advertisement lights. Air conditioners. ( few places). Applications - Man less load Communication tower Man less pumping stations – Railway, DJB Charging of battery can also be stopped using these device Load can also be limited Over riding facility Alarm facility It can be programmed so as during need – one cannot switch ON the identified load Online comprehensive & user-friendly platform to customers for gathering information and submitting queries and complaints Communication towers load can be switched Off during need as they have inverter Man less pump station at DJB or Railway can be both operate and Control through the device Control of battery charging is an other application

Stand by load consumes substantial power Legislation about efficiency Following load need review Non efficient – Alternate efficient load are available Load which impact technical loss or stress the network Load type critical during peak Stand by load consumes substantial power Efficiency Minimum efficiency level to be defined e.g. Standby mode 2 W Parameters Associated parameters to be controlled e.g. PF of CFL 0.85 Review Technology those can be called as luxury – Neon v/s LED

Technical loss Reduction It is un-avoidable but can be curtailed Has maximum impact during peak load Consumer load type also affect the technical loss If In India Avg Technical loss is 10% - what about at peak ?? Consumer load Load type affects the technical loss Typical load Power Pf Unbalance - traction High harmonics Review To control typical load Investment – renewable v/s technical loss

DSM Emerging trend - Voltage control Principal Typical consumer voltage 220 ~ 230V. The allowable tolerance – +/- 6% Wattage consumption depends upon voltage By controlling instantaneous voltage – consumption in MW can be controlled

Typical thumb rule – 1% V effects 1.3% power consumption Voltage control – Use of smart grid Principal Check consumer voltage at tail end - online Compare with allowable range Remotely manage tap position to control voltage Typical thumb rule – 1% V effects 1.3% power consumption

DSM need support in terms of Policy Technology Involvement of consumers Finance Smart Grid Facilitates DSM Key question is investment in generation or in DSM

Thank You Contact detail: . Rajesh Bansal 91-11-39999425, Mobile - 9350261602 Email: rajesh.m.bansal@relianceada.com

Schemes – Selection criteria ROI on investment – DESCOM & Consumer. For DESCOM, ROI against any investment can be possible if and only if their is peak load reduction. There are many schemes where consumer will have attractive ROI but DISCOM will be in loss. (Reduction of load during non peak hours). Incase DISCOM has surplus energy than ROI is question mark. Ideally energy conservation means : Reduction in consumption but may have Slight increase in tariff/ cost however - over all saving to consumers. Benefit to society