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Andreas Wagner, Regional Sales Manager, Bosch Solar Energy

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With the expected Eskom increases over the next five years, retail petroleum service stations are facing reduced profitability and some even closure as profits are continually eroded by rising operating costs. Electricity is one of the costs that can be managed and self generated.

This conference aims to examine best practices in energy efficiency and unpack the options and complexities of generating electricity from renewable energy specifically for retail fuel sites.

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Andreas Wagner, Regional Sales Manager, Bosch Solar Energy

  1. 1. FUTURE SERVICE STATION ENERGYa practical approachSE/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
  2. 2. FUTURE SERVICE STATION ENERGY2010 key figures59% share of salesWorlds largest supplier of cutting-edgeautomotive technologyBosch Grouptotal47.3 billion euros in sales283,500 associatesincluding 34,200 in research and developmentAutomotiveTechnologySE/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.2IndustrialTechnologyConsumer Goodsand BuildingTechnology1 Including other segments14% share of salesWorlds leading manufacturer of large gearboxesand of powertrain, packaging, and processtechnology27% share of sales1Worlds largest power tool manufacturer, leading thefield in household appliances, heating and cooling, andsecurity systems
  3. 3. FUTURE SERVICE STATION ENERGYPhotovoltaics (PV)Thin Film ProductsMulti Crystalline Mono Crystalline CISCrystalline Productsa-Si/µm-SiMono cellsSE/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.3Multi Crystalline Mono Crystalline CISa-Si/µm-SiMono cells
  4. 4. FUTURE SERVICE STATION ENERGYA good quality module with a flexible, i.e. modularand scalable inverterSE/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.4
  5. 5. FUTURE SERVICE STATION ENERGYGrid TieGRIDTIEinverterDCAC12x Bosch 60M2402500WacNormal AC grid230V 50HzSE/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.5Energy is taken from the PV panels by DC to the GRID-TIE inverterIf the grid is on, the GRID-TIE inverter senses this, synchronizes to itand 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 isdrawn from the grid. This is also known as NETT-METERING. It translates to an electricity saving and effectivelyuses the grid as its “battery”If the grid fails or is outside of the set specifications, frequency andvoltage, the GRID-TIE inverter switches off within 0.2 seconds. No grid, no powerMETER
  6. 6. FUTURE SERVICE STATION ENERGYGrid Tie with Back upGRIDTIEinverterDCAC12x Bosch 60M2402500WacISLANDinverterNormal AC grid230V 50HzSE/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.6Energy is taken from the PV panels by DC to the GRID-TIE inverterIf the grid is on, the GRID-TIE inverter senses this, synchronizes to it and feeds theenergy into the AC grid. This grid can be supplied either by the public gridor 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 thebattery, from where it also takes energy if no or too little energy comes from thePV. Additional energy can be fed into or pulled from the grid. This is freely programmable.Power even if the grid is downSmaller batteries than completely OFF-GRIDAdditional autonomy due to GENSETMETERinverterBatteryDCGENSET
  7. 7. FUTURE SERVICE STATION ENERGYPick and Pay Longmeadow… causing this effect on the electricitymeter and thereby a saving on themonthly electricity bill.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.PV supply feeding into theinternal grid … Things to remember: No battery back up (optional eg IT), feeds induring peak loading (HVAC), thereby reducing peak demand.7
  8. 8. FUTURE SERVICE STATION ENERGY4x SB2500 – different modules – side by side4 1 3 2S S SF SW97TF 220P 180M 220PkWh 9765 9614 9644 8889h 10941 11313 11700 11560SE/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.8kWh/h 0.89 0.85 0.82 0.775.02% 3.10% 7.20%10.52%16.07%
  9. 9. FUTURE SERVICE STATION ENERGYFIT? Germany vs. Brazil33.165 MWp31.03.2013-1.8% per month (05 – 07.2013)2500 – 3500 MW / yearhttp://www.bundesnetzagentur.deSE/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.91 000 roof program1 000 000 roof programNegative electricity prices on the day ahead market!Workday: 60GWp requirement, 36GWp from PV!Separate fact from fiction …
  10. 10. FUTURE SERVICE STATION ENERGYSE/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.10Buying cheap nuclear power from France?
  11. 11. FUTURE SERVICE STATION ENERGYBrazil as a better guideline for SA?1. Below 1MW in one location2. Below 1MW more than one location, but one Tax number3. 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)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.11- 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-
  12. 12. FUTURE SERVICE STATION ENERGYPitfalls:- Guarantee?- Micro cracks?- Quality of the installation- electrical – DC: wiring loops, lightning induceshigh voltages. Short circuit proof?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.12high 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
  13. 13. FUTURE SERVICE STATION ENERGYThoughts:- 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 andwhat do they say?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.13what do they say?GOOD DATA makes for GOOD DECISIONS!Who can you trust? References? It’s a new industry …
  14. 14. FUTURE SERVICE STATION ENERGYThank 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

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