DSM Case Study- Tata Power Experience

Shekhar KhadilkarTATA Power

18th Nov, 2010

For NPTI- Faridabad

• Brief Introduction of Tata Power

• National efforts in DSM

• Mumbai Load curve

• Tata Power DSM Initiatives

OUTLINE

Chief Sustainability

Officer (CSO) & Head – C-SHE

Dr. A. N. Patkar

Head – Environment

Mr. P. P. Kokil

We strive

-To provide Uninterrupted Power

Supply to Mumbai

National level DSM efforts

Regulatory Framework for energy efficiency in India

• Energy Conservation Act, 2001 (& Amendment 2010)

Created Bureau of Energy Efficiency

Appliance standards and labeling

Energy consumption norms, Energy Savings

Certificates and energy-use reporting requirements for

energy-intensive industrial units- Perform, Achieve

&Trade

Energy Conservation Building Code for commercial

buildings

Certified Energy Managers and auditors

• National Action Plan for Climate Change, 2008

National Mission on Enhanced Energy Efficiency

provides mandate for market-based mechanisms to

promote energy efficiency

Initiative by MERC in Maharashtra

Regulatory Support

Time of The Day TOD tariff is applicable for Industrial & Commercial Consumers

All expenditure regarding DSM is allowed.

Annual budget is cleared ‘in principle’ by MERC for each utility

Each project is required to be submitted to MERC for approval

Expenditure can be made only after approval by MERC

The expenditure is charged to ARR

Program should achieve either energy saving and load shifting.

Cost benefit tests are clearly defined.

DSM Regulations are in place, DSM CC is formed.

Measurement and verification guidelines are drafted

Pilot programs for utilities are approved.

Mumbai Load CurveMumbai Demand

0

500

1000

1500

2000

2500

3000

1 3 5 7 9 11 13 15 17 19 21 23

Hrs

MW

REL GENExternal Pow er purchaseTPC GEN

Load Duration Curve for Mumbai

1000

1500

2000

2500

3000

3500

0 10 20 30 40 50 60 70 80 90

% HOURS

DE

MA

ND

FY 09 FY 10

11

Tata Power Load Research Strategy

12

Tata Power Load Research Strategy

13

14

Residential Consumers load profile based on

market survey

Source: UCC Market Survey-2009

Water Heaters

A/C

Refrigerator

Load Research

Conclusions

Industrial load is shifting out and commercial premises are taking over

Fully air conditioned AC complexes are rapidly growing

Addition of load is only in day time peak

A/C load is more than 40% of the total load

Most of the central ACs are mismanaged and has a large potential for improvement

Residential is consuming more on AC and refrigeration

Industrial estates have large no of old inefficient window ACs

People are willing to invest in energy efficient devices

Individual industrial and commercial unit is unique in nature and needs separate study

SME sector is reluctant to invest in energy audits.

DSM Program :1 – Energy Audits3 EA firms visit customer

& give commercial offer

Bid opening, analysis &

selection of EA firm

Consumer pays 25% cost

to EA firm & submits

letter to Tata Power.

EA firm do the field audit

(4 to 5 days)

Presentation & discussion

Meeting with consumer

Submission of final report

to consumer & Tata Power

EA firm submits draft

report to consumer

Tata Power pays 75% cost

to EA firm from DSM budget

Data analysis, compilation

& report to MERC

for the category

Feed back

communication

with consumers

after 6 months

Energy Audit report summary FY 09-10

•No. consumer's Energy Audit completed : 15

•Estimated unit Savings ( MUs / year ) : 5.91

•Estimated Annual Savings ( Rs. crores ) : 4.62

•Estimated Investment ( Rs. Crores ) : 9.96

•Simple payback period ( in months ) : 26

Demand Side Management

DSM Program : 2 – Energy Efficient T5 FTL replacement

Approved by Commission, Tendering process completed

Tube lights have special parameters of Low THD & High PF, Extended warrantee

Vendor selected based on testing carried out at ERDA Baroda

Consumer Category Maximum Number of eligible T5 FTLs

Residential 3

For Industrial/Commercial Consumers (Connected Load)

0 - 20 KW 10

20 - 50 KW 20

50 - 100 KW 50

100 – 300 KW 150

> 300 KW 250

Product Details Category

Total

Cost

per FTL (INR)

Consumer

Contribution (INR)

“Tata

Power”

Contribution (INR)

“OSRAM” Make

Helios Putty T5 IQ

Residential

500

300 200

Non-Residential

350 150

“OSRAM” Make

Helios Connect T5 IQ

Residential

610

410 200

Non-Residential

460 150

Quantity : 50000 FTL ; Energy Saving : 17 Watts per FTL

Issues:

1. Joint procurement took more time

2. Testing at ERDA took very long time

3. MOU with vendor is under discussion

4. Vendor is insisting on tri partite agreement

which is not acceptable to TPC.

Demand Side Management

DSM Program : 3 – Energy Efficient Split A/C Replacement

Approved by Commission, Tendering process completed

Old window A/C will be replaced by 5 Star Split A/C

Quantity : 200 A/C ; Energy Saving : 25%, Extended warrantee to consumer

MOU, Communication is in progress.

If response is good, the scheme should be made available to all interested consumers applying

for the same. Else there will be disputes.

DSM Program : 4 – Energy Efficient Ceiling Fan Replacement

Approved by Commission, Tendering process completed

Old Ceiling fan will be replaced by 5 Star Ceiling Fan

Quantity : 2000 fans ; Energy Saving : 25%

MOU, Communication is in progress.

If response is good, the scheme should be made available to all interested consumers applying

for the same.

Thermal Storage System

Demand Side Management

DSM Program : 5 – Thermal Storage program

Approved by Commission,

Communication done with consumers

12 consumers have shown interest

Thermal storage audits carried out for them & Report to be submitted to MERC

Rebate of Rs 500/TRH to be offered after successful implementation.

Quantity : 10000 TRH ; Load Shifting : 10 MWh

3

Summary of Pilot Programs

Portfolio of DSM pilot programs for Tata Power- D consumers

Sr. No. DSM pilot programTarget consumer

categoryDSM Objective

Estimated

program

expenditure

( in Rs. Lakhs)

Estimated

Annual

Energy

Savings

( In Mus)

Estimated

Annual

Demand

Savings

( In kW)

Expected

completion

date

Pilot 1 EE T5 FTL

LT- I, LT- II, LT- III,

LT- IV,

HT-I , HT - II

Strategic

conservation116 1.68 680 31/03/2011

Pilot 2EE 5 Star split AC

program

LT III - Industrial

( < 20 kW )

Strategic

conservation19.02 0.169 70 30/12/2010

Pilot 3EE 5 Star Ceiling fan

programLT I - Residential

Strategic

conservation10.98 0.11 40 30/12/2010

Pilot 4Thermal Storage

program

LT II- C, LT IV, HT

I, HT II Load Shifting 59

2.4

( Energy

shifting)

1000

( Demand

shifting)

31/03/2011

Pilot 5

Centralised AC

system Chiller

program

LT II- C, LT IV,

HT I, HT II

Strategic

conservation128 1.54 640 31/03/2011

333 3.499 1430

Demand Side Management

Various projects taken within Tata Power

LED Installations

LED street lighting

Solar heater, T5 FTLs

Solar wind Hybrid systems

Central energy monitoring system

Conferences ,Seminars with MERC

CEO Breakfast meet on DSM

HVAC workshop at NSE

Utility capacity building program

M&V Training Program

Demand Side ManagementPeople Participation

Exhibition at consumers’ door step during EC WeekMobile Exhibition on wheels for promoting EE lighting

At Powai At Saki Industrial Estate

Demand Side ManagementPeople Participation

Exhibition of energy efficient technology

At Saki Industrial Estate

Demand Side Management

CEO Meet

CEO’s Meet at Ambassador sky chef.

Present were MDs, EDs of all utilities

of Mumbai and Chairman and

members of MERC

ED and VP(O) of Tata Power in

discussion with Chairman MERC and

Member MERC during One day

Workshop Held on 18 Dec.

HVAC Workshop at NSE

Demand Side Management

New Developments: Demand Response

‘Demand Response’ (DR) is voluntary load curtailments by large commercial

and industrial consumers during peak hours when requested by Utility in

order to create a curtail able capacity during high demand months.

MERC in its April 2010 regulation under Section 4(c) has recognized DR as

an integral part of the DSM implementation framework

CERC in their IEGC 2010 regulation has defined DR in Indian context for the

first time in Electricity Regulations

It is a primary demand side resource for smart grid solution

Financial incentives are offered to consumers participating in load curtailment

when demanded.

Demand Side Management

Thank You for your valuable time.