Your energy desk reference. Visual explainers on markets, grid operations, clean energy, policy, procurement, and efficiency — each designed to read in under 10 minutes.
On a napkin Four weather threat patterns + grid stress modes Extreme cold Winter Storm Uri · Feb 2021 • Heating load surge • Gas-electric coupling: gen fuel ...
On a napkin Commercial facility load + solar offset METER Grid utility tariff export import Energy offset (¢/kWh × kWh) Demand charge savings ($/kW) Export ...
Renewable energy certificate (REC) Category: Clean Energy
On a napkin Building the grid back up from zero 1. Self-start unit Hydro / battery+GFM on-site fuel Starts itself. Energizes line. 2. Cranking path ...
On a napkin — US ISO/RTO coverage ISO-NE New England NYISO New York PJM Mid-Atlantic + Midwest ~65M people served MISO Midwest + South SPP Central Plains ERCOT ...
On a napkin Battery 4-hour BESS 1 MW / 4 MWh Battery management Energy arbitrage — charge $20, discharge $100 spread × efficiency × cycles = annual revenue ...
On a napkin Vertically integrated (most of US) Generation Transmission + distribution Retail sales One utility owns & sells everything SE · NW · most of SW ...
On a napkin $/MWh Fixed: $68 Index below fixed — buyer regrets locking in Index above fixed — buyer glad they locked in Year 1 Year 2 Year 3 The short version ...
On a napkin Frequency response when a generator trips Hz 60.0 59.5 trip nadir 59.6 Hz inertia + primary FR ~0–10 s regulation (AGC) seconds–min spinning + ...
On a napkin Unmanaged vs. managed EV charging — load curves MW 00 06 12 18 24 Baseline grid load unmanaged: piles on peak managed: shifts to overnight OBBBA ...