# Energy 4.2 Renewable Energy Systems - Solar
# Applies to
Multi-residential, non-residential and mixed-use developments
# Objective
To encourage on-site renewable energy generation and reduce greenhouse emissions.
# Summary
Points are awarded when the solar power system provides 5% of the annual energy consumption of the building class it supplies.
The solar power system annual generation is calculated using the built-in calculator.
For dwellings, the annual energy consumption includes heating, cooling and hot water.
For non-residential spaces, the annual energy consumption includes heating, cooling, hot water and lighting.
# Documentation & evidence required
- Specifications of the solar photovoltaic system
- Site, floor and/or roof plans showing location of solar photovoltaic system as described
# Further information
Sunulator is a simulation tool that can help plan for grid-connected solar power. Unlike most other solar calculators, Sunulator uses half-hourly consumption and generation data over a whole year to estimate how much solar generation will be consumed onsite versus exported. Based on electricity tariff information, it then calculates the impact on your electricity bill and projects the savings over a 30-year time frame. Financial results include payback period, net present value and return on investment.