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One Year of Photovoltaic Generation in Rio de Janeiro
German-Brazilian Renewable Energy Dialogues, September 2014 Hans Rauschmayer
• Founded in 2003
• Technologies: PV, Solar Heating
• Training classes since 2008
– For professionals, students, curious and low income people
– Most complete program in Rio
• Installations and projects
• International business support
• Well connected to important players
– GIZ, AHK
– Sebrae, Senai, SESC
– Rio Capital da Energia
– Universities
– Government
– Institutions
The company
First pv on-grid system in Rio de Janeiro
• PV power: 2115 Wp • Inverter: 2,0 kW • Connection: August 2013 • More information and online generation data:
www.solarize.com.br
One year of Generation
Results
• Low variation between summer and winter, excepting the extraordinary jan/14
• Solar energy showed very reliable
Details of the Solarize System
• 1,2% loss due to orientation (27° NE)
• Approx. 10% loss due to neighbor buildings
• Between May and July approx. additional 10% loss due to tree shadowing
Accounting according to actual laws Example: Rio de Janeiro – Energy Provider: Light
Inverter
PV panel
Injection meter
Consumption meter
Gross consumption
Grid injection Generation
Total consumption
Self consumption
Net consumption
ANEEL REN 482 “Net metering”: Pay only the net consumption
Confaz ICMS 6:
Confaz ICMS 6: • injection tariff
without VAT (ICMS) • VAT on gross
consumption
• The consumer tariff in in most Brazilian states depends on the total consumption in the respective month. Example: Rio de Janeiro, Light
ICMS rate steps
Monthly consumption VAT (ICMS)
Tariff
R$ / kWh
0 .. 50 kWh, also injection tariff
0% 0,34
51 .. 300 kWh 18% 0,42
> 300 kWh 29% 0,48
*August 2014; tariffs vary monthly due to taxes PIS/COFINS
• Variations of self-consumption and total consumption cause monthly variations of earnings
• With intelligent system dimensioning, the earning for every generated kWh exceed tariffs, reaching up to R$ 0,57/kWh (0,14 .. 0,19 €/kWh)
• the total earnings would have been 19% higher following Aneel 482 rules (no ICMS on injected energy)
Earnings – Example Solarize System
• High demand in Rio for upper class residential systems
• Motivations
– Environmental responsibility
– Citizen’s responsibility: “I feel the duty to do something against the energy crisis”
– Pioneer thinking
– Reduction of energy bills
– Autonomy
• Companies
– Green marketing
– Test the solution to being prepared for the future
– Definitive energy bill reduction
• Difficult to attend:
– Pure financial motivation
– Big energy Customers
– Rural tariffs
Market situation
• Slow and bureaucratic legalization process
• Few suppliers for installation accessories – Base structures
– Electric devices
– Measuring devices
– But: no problem to get modules and inverters!
• Lack of trained workforce
Difficulties
• The basic conditions for solar energy are excellent – Sun
– Interested population and companies
– Energy needs
– Economically viability of rooftop sytems
• We need – Consistent regulation (Aneel, ICMS), following states like MG
– Predictable return on investment
– Cost reduction (ICMS on production, importation and generation)
– Financing
– Quickly and positively acting utility companies
– Governments compromised to this technology
• Chances – Energy security at lower costs
– Countrywide employment generation
Conclusions – PV Situation
Abinee, 2012
Thank you for your attention!
Hans Rauschmayer
+55 - 21 - 99615-9812
www.solarize.com.br
Solarize Serviços em Tecnologia Ambiental Ltda.
