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Energy Vault and Jupiter Power Announce New Agreement for Battery Energy Storage System in Texas

LCG, June 4, 2025--Energy Vault Holdings Inc. (Energy Vault) and Jupiter Power (Jupiter) today announced the signing of an agreement for the supply of an additional battery energy storage system (BESS) at a Jupiter site in the Electric Reliability Council of Texas (ERCOT) region. The initial BESS project, located near Fort Stockton, Texas, was completed in July 2024, with a storage capacity 100 MW/200 MWh. The new BESS project will add another 100 MW/200 MWh of capacity. Construction has commenced, and the project is expected to achieve commercial operations by the end of this summer.

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NuScale Power Achieves Standard Design Approval from NRC for 77 MW SMR

LCG, May 30, 2025--NuScale Power Corporation (NuScale), a leading provider of advanced small modular reactor (SMR) nuclear technology, yesterday announced that it has received design approval from the U.S. Nuclear Regulatory Commission (NRC) for its uprated 77 MW power modules. NuScale states that it remains the only SMR technology company with design approval from the NRC, and the company remains on track for deployment by 2030, with 50- and 77-MW SMR options.

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Industry News

TVA Announces Expected Cost Increase and New Schedule for Watts Bar Nuclear Reactor

LCG, April 6, 2012--The Tennessee Valley Authority (TVA) announced yesterday cost increases and schedule delays for the construction of the 1,180-MW, Watts Bar Unit 2 nuclear power plant, located in Spring City, Tennessee. The announcement follows a seven-month construction review.

TVA's senior vice president for Nuclear Construction stated, "The emerging estimate to complete Watts Bar Unit 2 will require additional funding of $1.5 billion to $2 billion, putting the total estimated cost of completion in the range of $4 billion to $4.5 billion. The estimated time to complete is between September and December of 2015."

TVA's president and CEO stated the initial detailed scoping, estimating and planning study (DSEP) completed and approved by the TVA board in 2007 appeared "aggressive but doable" at that time. In 2007, the DSEP approved a project with a 60-month construction schedule and a cost of $2.49 billion.

TVA's CEO stated, "Based on the findings to date, we will be asking the TVA board of directors to approve the continued funding and the extended construction time for Unit 2 at Watts Bar Nuclear Plant." The board is expected to consider the new budget and schedule later this month.

TVA now has in place new management at the site. TVA's senior vice president for Nuclear Construction stated, "We now have a high-confidence cost estimate and milestone schedule. The safe and quality cost-effective completion of Watts Bar Unit 2 is an integral part of achieving TVA's energy goals as set out in the Integrated Resource Plan. And, we have added contingency and an allowance for addressing Fukushima impacts."

Construction on Watts Bar 2 actually began 40 years ago in 1972. The unit was deferred in 1988, when load growth forecasts shrank. Work to complete the unit resumed in 2007. Watts Bar 1 is the last commercial nuclear unit in the United States to come online, and it commenced commercial operation in May 1996.

TVA has received a Nuclear Regulatory Commission (NRC) license for fuel at Watts Bar for use in Unit 2, and the new fuel began arriving last summer.
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