Understanding how non-profit entities manage electric grids to ensure supply-demand balance

View a map of the balancing authorities managing electric systems and costs throughout the continental US

These are made up of utilities, Power Marketing Administrations—hydropower marketers from the Department of Energy—and groups of utilities that have formed regional entities called Regional Transmission Organizations or Independent System Operators. Collectively, balancing authorities ensure supply meets demand and can direct utilities to implement rolling blackouts to prevent permanent damage to electrical equipment.

Simulate the effects of changing supply and demand on the electric grid

In this application, users can modify the demand of fictional cities and the supply of various generators, including a nuclear power plant and a wind farm, which can be disconnected from the grid. Notice that current may flow into or out of external systems to compensate for available generation. See what it takes to cause a blackout in different cities or shut down the entire grid.

Understanding the power grid and how renewable sources fit in

The power grid is evolving to include ever-higher levels of solar and wind, which don’t provide inertia. Should system planners and operators panic?

Discover why Texas runs its own electric grid, separate from the other US interconnections

In 1935, electrical utilities in the Lone Star State opted to rely on the state's own fossil fuel reserves to power an independent electric grid. While this prevented the federal oversight required for the Eastern and Western Interconnections that span multiple states, it also meant Texas's grid was unable to draw sufficient backup power during the winter 2021 power grid failure.

Learn why electrical substations are needed to provide safe electricity with minimal energy loss

These typically fenced-off facilities with steel boxes or cylinders topped with cone-like caps house circuit breakers, fuses, and switches that can isolate sections of the grid to prevent electrical failures from spreading. Substations use transformers to modify electrical voltage and are customized to the generation, transmission, and distribution networks they interconnect.

Some renewable energy sources may weaken the resiliency of electric grids by removing outage buffers provided by coal- and natural gas-fired plants, which provide the system with more time to find a new power source if a plant goes down.

A look at how power is restored after an outage on the electric grid

From minor system failures to more widespread blackouts, crews begin by assessing damage done to infrastructure, such as transmission towers and distribution power lines. Prioritizing essential services, such as hospitals, crews then begin restoration, starting with any damage found closest to the power generation and working down the distribution system to customers.

Utility companies are often considered 'natural' monopolies

Natural monopolies occur in industries where the upfront costs of entering the market are high, making competition unrealistic. Investor-owned power companies, like Duke Energy, often have natural monopolies, as building alternative power grids and transmission lines is too expensive and impractical for competitors.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

Over-the-counter markets are used to bypass traditional exchanges while trading

Commodities are regularly traded via OTC markets so that buyers and sellers can bypass central exchanges and negotiate terms more directly. Before the advent of formal exchanges, most assets were traded OTC.

An explanation of dynamic pricing algorithms and the factors that impact them

Rather than static prices set by manufacturers or retailers based on the costs of goods, online businesses or box stores with electronic price tags can change prices in real time based on supply, demand, time, location, and competitor prices. These algorithms can be programmed to maintain or maximize profit margins based on shoppers' willingness to spend.

View the ecosystem of global services, organizations, and agencies behind the internet

Through an open, transparent, and collaborative model built on open standards development and shared global ownership, the internet is kept freely accessible amid evolving international policies. Key organizations, such as IANA, which allocates IP addresses and fulfills administrative functions for the Domain Name System, function as non-profit organizations.

Explaining how water's movement between different salt concentrations can generate electricity

Water naturally moves from regions of low salinity, such as freshwater, to regions of high salinity, such as ocean water, across a semipermeable membrane. This movement produces pressure that can be harnessed in osmotic power systems to drive turbines and generate electricity, much like in hydroelectric plants.

See how local, state, and federal governments divide the cost of public services

Federal, state, and local governments share responsibility for funding public services. Education, roads, and social programs are funded through a complicated mix of taxes and intergovernmental transfers.

UNOS oversees the entire US organ donation system

The United Network for Organ Sharing is a private, nonprofit organization that manages much of the US organ donation and transplantation system under a federal contract. Medical urgency, blood type, organ size, and geography of the donor and recipient are all factors determining how someone who needs an organ is matched with someone who donated an organ.

Carbon markets incentivize companies to cut emissions but require high carbon prices

To reduce greenhouse gas emissions, a cap-and-trade system issues a limited number of emissions permits—carbon credits—that decrease each year, cutting into a company's profits if it does not reduce emissions and must buy permits from others. However, cheap permits and minimal fines for lacking permits have reduced the system's effectiveness.

The firms running America's voting systems

Three companies make up over 90% of the US market share around voting systems, and like any company, they're priorities aren't always aligned with the public's. Dive into the industry of voting machines in this investigation piece from the Guardian.

Decentralized autonomous organizations organize on the blockchain

Decentralized autonomous organizations (DAOs) are typically formed with a specific goal in mind. ConstitutionDAO, for instance, was made to raise funds to buy a copy of the US Constitution (it failed).

A centrally planned economy is one where the government—not markets—sets production

This Investopedia article explains how command economies work, which countries have used them, and why even market-based nations like the US sometimes adopt tools such as rationing or price controls during wartime or national emergencies.

For-profit schools are not beholden to educational missions

While many private schools are nonprofit organizations, beholden to their missions and boards, some are for-profit entities owned by private individuals or corporations. In some cases, these institutions offer substandard courses and award unaccredited degrees.

Hear why some experts and investors think short selling keeps the market healthy

Despite criticism that short selling incentivizes downturns in the market, many experts and investors say that short selling is a critical aspect of price discovery and market efficiency. These experts and investors say that short sellers help detect fraud and prevent stocks from becoming overvalued.

The ins and outs of oil refining

The oil industry is broken up into the upstream, midstream, and downstream segments, and oil refining is part of the latter. “Downstream” refers to companies like Standard Oil that are converting crude oil into a finished product.

Battery and plug-in hybrid EVs can operate with zero tailpipe emissions

Battery electric vehicles only run on electricity, while plug-in hybrids incorporate a small internal combustion engine that recharges the battery or directly powers the wheels to improve driving range. Fuel cell electric vehicles convert hydrogen gas fuel into electricity.

An initial public offering is how a private company becomes public

This milestone requires plenty of preparation, starting with the SEC's S-1 registration, revealing key details about the company's finances and strategy. Investment bankers set valuations, secure long-term investors, and finalize share pricing before the public launch. IPOs provide companies with significant capital, but also demand transparency and invite public scrutiny.

Independent redistricting commissions aim to take politics out of the map-drawing process

In several states, citizen or bipartisan panels draw congressional and legislative districts based on neutral criteria like population and geography. Learn more about how these commissions increase competitiveness in elections.

Annuities are regulated at the state level

However, certain types of annuities, like indexed annuities, are also nationally regulated by the SEC and the Financial Industry Regulatory Authority to protect investors.

RTGs convert heat generated by the decay of radioactive plutonium into electricity

Radioisotope thermoelectric generators use a thermocouple—two plates of different metals joined at two junctions to make a closed circuit. When heating one junction while keeping the other cool, a voltage and an electric current are created.

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.

Netflix profits when you're not watching, and its movies are designed that way—read a detail-rich critical essay exposing lesser-known Netflix takes

Radioactive elements can introduce software errors because the ionizing radiation they produce can detach electrons from atoms, and computer code relies on the distribution of electrons.

While the sun's gravity keeps the planets in orbit, their gravity also pulls on the sun, causing it and everything else in the solar system to orbit around a mutual balance point called the barycenter—the true center of the solar system.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

The USPS spent $3.97B in 2024, accounting for .058% of the federal budget.

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

Use this tool to calculate the dollar value of your parental mental load, from meal planning to coordinating after-school care, then see resources that help generate solutions.

See this overview of the firework rules across all 50 states, ranging from a complete ban on non-professional fireworks in Massachusetts to states with more lax rules like Indiana.

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

Explore what it's like inside a patient isolation unit, used in situations such as treating a patient or suspected patient with Ebola.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.