"""
Constants for the calculations
"""

DISCOUNT_RATE = 0.10  # * 100% annually

J_PER_Wh = 3.6e3  # 3600 Joules / Watt-hour
CARBON_OFFSET_SOCIAL_COST = 50   # $/ton - https://www.edf.org/true-cost-carbon-pollution
CARBON_OFFSET_AVE_COST = 25      # $/ton - https://www.whatitcosts.com/carbon-offsets-cost-prices/
CARBON_OFFSET_LOW_COST = 5       # $/ton

DAYS_PER_YEAR = 365  # days per year
DAYS_OP_PER_YEAR = 350  # days of operation per year
HOURS_PER_DAY = 24

COST_PER_kWh = 0.10  # $/kWh
BATTERY_COST_PER_kWh = 250  # link below
# https://www.greencarreports.com/news/1112800_teslas-solar-and-battery-project-in-hawaii-we-do-the-math
