Tag Archives: hydropower

Looking for pumped storage in all the wrong places

castaic_power_plant

LADWP is proposing to spend $3 billion on a pumped storage facility at the Hoover Dam on the Colorado River. Yet, LADWP has not been using extensively its aging 1,247 MW Castaic pumped storage plant on the State Water Project in the pumping recovery mode. Instead, LADWP runs it more like a standard hydropower plant, and uses pumping to supplement and extend the peak power generation, rather than using it to store excess day time power. And the SWP’s 759 MW pumped storage plant at the Hyatt-Thermalito powerhouse at Lake Oroville has been not been used effectively for decades.

The more prudent course would seem to be to focus on refurbishing and updating existing facilities, with variable speed pumps for example, to deliver utility scale storage that can capture excess renewable energy generation nearer large load centers. The State Water Contractors should be incented to upgrade these facilities through contracts with the state’s electric utilities. Unfortunately, no direct market mechanism exists to provide a true value for these resources so long at the California Public Utilities Commission and the California Independent System Operator avoid developing full pricing. As it stands, the current pricing scheme socializes and subsidizes a number of electricity services such as transmission, unit commitment decisions, and reliability services.

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Repost: Wind capacity blows past hydro to become most plentiful US renewable | Utility Dive

Installed wind capacity is more than 82,000 MW, according to a trade group, making it the nation’s largest renewable resource ahead of hydro.

Source: Wind capacity blows past hydro to become most plentiful US renewable | Utility Dive

An economically attractive environmental solution in peril

The agreement to take down PacifiCorp’s dams on the Klamath River is in peril. In 2006 we showed in a study funded by the California Energy Commission that decommissioning the dams would likely cost PacifiCorps ratepayers about the same as relicensing. That mitigated the economic argument and opened up the negotiations among the power company, farmers, tribes, environmentalists and government agencies to came to an agreement in 2010 to start decommissioning by 2020.

The agreement required Congress to act by the end of 2015 and that deadline is looming. Unfortunately, there are still opponents who mistakenly believe that the project’s hydropower is cheaper than the alternatives. In fact, the economics are even more favorable today whether PacifiCorp uses natural gas or renewables to replace the lost power. And this analysis ignores the benefits to the Klamath fisheries from decommissioning. It’s too bad that bad simplistic economics can still get traction in the legislative process.