{"id":12939,"date":"2016-04-08T13:40:32","date_gmt":"2016-04-08T18:40:32","guid":{"rendered":"http:\/\/blogs.edf.org\/energyexchange\/?p=12939"},"modified":"2016-07-22T10:33:23","modified_gmt":"2016-07-22T15:33:23","slug":"transforming-the-electric-system-to-reduce-costs-and-pollution","status":"publish","type":"post","link":"https:\/\/blogs.edf.org\/energyexchange\/2016\/04\/08\/transforming-the-electric-system-to-reduce-costs-and-pollution\/","title":{"rendered":"Transforming the Electric System to Reduce Costs and Pollution"},"content":{"rendered":"

\"electrical-power-lines\"By: Beia Spiller<\/a> and Kristina Mohlin<\/a><\/em><\/p>\n

Electricity markets around the world are transforming from a model where electricity flows one way (from electricity-generating power plants to the customer) to one where customers actively participate as providers of electric services. But to speed this transformation and maximize its environmental and cost benefits, we need to understand how customer actions affect the three distinct parts of our electric system: generation, transmission, and distribution.<\/p>\n

Generation<\/strong><\/p>\n

Generators \u2013 or power plants \u2013 convert an energy source such as natural gas, coal, wind, or sunshine into electricity that flows across wires and into your building, allowing you to turn on lights and use appliances. Although the electricity is no different whether it is generated by solar or coal, the environmental and economic costs associated with different energy sources vary significantly.<\/p>\n

Not all generators are created equal in terms of efficiency, pollution, and how much they cost to build and run. Some generators produce electricity very cheaply and with fewer carbon emissions, but are expensive to build and maintain. Other generators are more polluting than clean energy alternatives and cost more per unit (or kilowatt-hour) of electricity generated, but can be turned on when demand for electricity skyrockets (for example, during heat waves). As demand increases, a variety of generators are used to provide the needed electricity \u2013 relying first on the cheapest generators (such as wind and solar) in order to keep costs low, and only turning on expensive and inefficient \u201cpeaker\u201d generators (such as natural gas-fired power plants) during periods of high demand.<\/p>\n

Because higher demand for electricity from power plants drives up cost and pollution, reducing demand for power plant-generated electricity can reduce both the overall cost of the system and harmful environmental impacts.<\/p>\n

[Tweet “Transforming the electric system to reduce costs and pollution”]<\/p>\n

Transmission<\/strong><\/p>\n

Electricity is transported from power plants to local communities via transmission lines. In addition to exporting energy from traditional power plants, transmission lines also allow communities to \u201cimport\u201d clean and cheap energy from distant areas. But long transmission lines are expensive, and as more electricity flows through them, power is lost<\/a> through heat, requiring greater amounts of electricity to be produced. Thus, different areas in the same state can face different prices for electricity depending on that area\u2019s overall demand and distance from the generation sources.<\/p>\n

Again, reducing demand and increasing local sources of generation helps control these transmission costs. The less electricity needed from large, distant power plants, the less electricity needs to be moved.<\/p>\n

Distribution<\/strong><\/p>\n

Finally, local utility companies distribute electricity via the traditional electric wires we\u2019re used to seeing on city streets. Some utility costs, such as billing and metering, are not affected by customers\u2019 usage of electricity. However, very expensive grid infrastructure \u2013 including substations, transformers, wires and poles \u2013 is significantly affected by how much electricity customers demand. \u00a0Local utilities must also conduct costly maintenance and operations on this infrastructure to avoid blackouts and meet safety requirements. Importantly, as local demand peaks, the system needs to expand accordingly, causing distribution costs to increase even further. For example, New York City\u2019s local utility (Consolidated Edison) foresees a billion-dollar investment in a new substation to accommodate increased demand in the Brooklyn-Queens area.<\/p>\n

\"Electricity_grid_simple-_North_America.svg\"<\/p>\n

Reducing demand for utility-provided electricity helps each part of the system<\/strong><\/p>\n

Consider how residential rooftop solar affects the entire system. Each home equipped with solar panels requires less electricity from its local utility. Thanks to this reduction in demand and its related costs, the utility can use funding it would have needed for new transformers or substations to invest in improving energy efficiency or incentivizing more customers to generate their own electricity. Consolidated Edison is currently pursuing this type of effort in the Brooklyn-Queens area<\/a> by identifying multiple alternatives to try to avoid the billion dollar substation investment. Other utilities are also experimenting<\/a> with home energy batteries, which can store excess solar energy during daylight hours for use at night, further reducing each customer\u2019s daily electricity use and impact on the distribution system. And because solar reduces demand for utility-provided electricity, less electricity has to be generated at power plants and transmitted from distant regions, reducing generation, transmission, and environmental costs. Many initiatives across the country are attempting to capture the opportunities offered by these technologies to change the fundamental way we interact with the electric grid.<\/p>\n

Reducing the amount of electricity that needs to be generated by traditional power plants, transmitted long distances, and distributed locally, reduces the overall cost and environmental impact of our energy system.<\/p>\n<\/div>\n

For example, the Reforming the Energy Vision (REV) initiative<\/a> in New York and the Public Utilities Commission-mandated Distribution Resource Plans in California<\/a> require utilities to consider alternatives to traditional infrastructure investments to deal with peak demand. These initiatives encourage customers to install rooftop solar or adopt energy efficiency, storage, and demand response<\/a> to reduce their use of grid-supplied electricity at peak times.<\/p>\n

And, in Texas, the Distributed Resource Energy and Ancillaries Market Task Force (DREAM TF)<\/a> is working to guarantee that customers who generate electricity are able to actively participate in the Texas electricity market. This will ensure distributed energy resources are paid appropriately for the benefits they provide to the system.<\/p>\n

These efforts in New York, California, and Texas are on the right track. Reducing the amount of electricity that needs to be generated by traditional power plants, transmitted long distances, and distributed locally, reduces the overall cost and environmental impact of our energy system. That\u2019s not just clean, it\u2019s smart.<\/p>\n

This blog post is part one\u00a0in a three-part series that takes a deep dive into economics of the electric system and the role pricing can play in accelerating the clean energy economy. <\/em>Part two of the series explores\u00a0The True Cost of Electricity: What We\u2019re Not Paying for Through Our Utility Bills<\/a>.\u00a0Part three\u00a0of the series examines How More Transparent Electricity Pricing Can Help Increase Clean Energy<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

By: Beia Spiller and Kristina Mohlin Electricity markets around the world are transforming from a model where electricity flows one way (from electricity-generating power plants to the customer) to one where customers actively participate as providers of electric services. 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