Should I Invest on Rooftop Solar?

Ankit Naik, 
Applications Engineer,
Wolfram MathCore

Why Solar?

Understanding Your Energy Needs

Major Energy Consumers in a House

Major factors:

Space heating/cooling

Water heating

Lighting & other electrical appliances (including cooking)

Case Study: My House in Linköping

Used PVGIS API to receive solar radiation and ambient temperature data

solar radiation values are for a horizontal surface

Energy Model for Space Heating and Cooling

Heating Water - An Often Overlooked Energy Cost

Appliance Usage and Seasonal Variations

Summary of Energy Consumption

Solar Production Potential

Monthly Solar Output

Solar Power vs. Grid Dependency

There is a need for grid power in winter

Financial Savings

module cost- 6000 USD for 6 kW

battery cost- 5000 USD for 10 kWh

initial investment- 11000 USD

Need incentives through government subsidies and tax credits

Installation cost and maintenance costs are not included

Tool for Comparing Cities

Beijing

Delhi

Los Angeles

Which city (in my small set) had the lowest payback period?

Why Solar?

Q&A