andreas wagner, regional sales manager, bosch solar energy

FUTURE SERVICE STATION ENERGY

a practical approach

SE/SZA | 09/05/2013 | © Robert Bosch GmbH 2013. All rights reserved, also regarding any disposal, exploitation, reproduction, editing,

distribution, as well as in the event of applications for industrial property rights.1


2010 key figures

� 59% share of sales� World's largest supplier of cutting-edge

automotive technology

Bosch Group total

� 47.3 billion euros in sales� 283,500 associates

including 34,200 in research and development

AutomotiveTechnology



Industrial Technology

Consumer Goods and Building Technology

1 Including other segments

� 14% share of sales� World's leading manufacturer of large gearboxes

and of powertrain, packaging, and process technology

� 27% share of sales1

� World's largest power tool manufacturer, leading the field in household appliances, heating and cooling, and security systems


Photovoltaics (PV)

Thin Film Products

Multi Crystalline Mono Crystalline CIS

Crystalline Products

a-Si/µm-SiMono cells



Multi Crystalline Mono Crystalline CISa-Si/µm-SiMono cells


A good quality module with a flexible, i.e. modular

and scalable inverter




Grid Tie

GRID TIE inverter

DC

AC

12x Bosch 60M240

2500Wac

Normal AC grid

230V 50Hz



Energy is taken from the PV panels by DC to the GRID-TIE inverter

If the grid is on, the GRID-TIE inverter senses this, synchronizes to it

and feeds the energy into the AC grid.

Energy is used in the house first, excess flows to the grid. If more electricity is used than produced by the PV, electricity is

drawn from the grid. This is also known as NETT-METERING. It translates to an electricity saving and effectively

uses the grid as its “battery”

If the grid fails or is outside of the set specifications, frequency and

voltage, the GRID-TIE inverter switches off within 0.2 seconds. No grid, no power

METER


Grid Tie with Back up

GRID TIE inverter

DC

AC

12x Bosch 60M240

2500Wac

ISLAND inverter

Normal AC grid

230V 50Hz



Energy is taken from the PV panels by DC to the GRID-TIE inverter

If the grid is on, the GRID-TIE inverter senses this, synchronizes to it and feeds the

energy into the AC grid. This grid can be supplied either by the public grid

or by the GENSET, with the energy flow being controlled by the ISLAND inverter.

Energy is used in the house first, excess is taken by the ISLAND inverter., to charge the

battery, from where it also takes energy if no or too little energy comes from the

PV. Additional energy can be fed into or pulled from the grid. This is freely programmable.

Power even if the grid is down

Smaller batteries than completely OFF-GRID

Additional autonomy due to GENSET

METERinverter

Battery

DC

GENSET


Pick and Pay Longmeadow

… causing this effect on the electricitymeter and thereby a saving on themonthly electricity bill.


distribution, as well as in the event of applications for industrial property rights.

PV supply feeding into theinternal grid … Things to remember: No battery back up (optional eg IT), feeds in

during peak loading (HVAC), thereby reducing peak demand.

7


4x SB2500 – different modules – side by side

4 1 3 2

S S SF SW97TF 220P 180M 220P

kWh 9765 9614 9644 8889h 10941 11313 11700 11560



kWh/h 0.89 0.85 0.82 0.775.02% 3.10% 7.20%

10.52%

16.07%


FIT? Germany vs. Brazil

33.165 MWp31.03.2013

-1.8% per month (05 – 07.2013)

2500 – 3500 MW / year

http://www.bundesnetzagentur.de



1 000 roof program

1 000 000 roof program

Negative electricity prices on the day ahead market!Workday: 60GWp requirement, 36GWp from PV!Separate fact from fiction …




Buying cheap nuclear power from France?


Brazil as a better guideline for SA?

1. Below 1MW in one location2. Below 1MW more than one location, but one Tax number 3. Above 1MW separate rules as IPP

- Net metering- Net use more than produced, pay R/kWh- Net use less than produced, kWh credits- kWh credits valid for 3 years (seasonal variations)



- System sizes self regulating- Incentive for peak shaping / peak shaving self regulating- Energy saving self regulating- New net metering capable meter supplied by PV project, installed by utility, takes ownership of meter- modernizing of metering infrastructure – no cost to government- extra capacity online – no cost to government- extra income – no cost to government-


Pitfalls:

- Guarantee?

- Micro cracks?

- Quality of the installation

- electrical – DC: wiring loops, lightning induces

high voltages. Short circuit proof?



high voltages. Short circuit proof?

- AC: surge arrestors?

- structure – tied to roof or substructure?

- business case based on kWh…

- kwh is not equal to kWp!

and and and


Thoughts:- guideline: 50 – 75 % of base load …- Shops will make greatest contribution ?- fridges / freezers ? - compressor / pumps / car wash - … what don’t we know?- boils down to getting proper data first …- ESKOM does not allow for net metering, but who supplies you and

what do they say?



what do they say?

GOOD DATA makes for GOOD DECISIONS!

Who can you trust? References? It’s a new industry …


Thank you for your attention.

C/CC | 14.04.2011 | © Robert Bosch GmbH 2011. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.

14

andreas wagner, regional sales manager, bosch solar energy

Business

industrial property

robert bosch gmbh

event of applications

gridtie inverterif

gridtie inverter senses

theinternal grid things

energy flow

little energy