Shiobara Pumped Storage Plant

{{Use dmy dates|date=November 2019}}

{{Infobox dam

| name = Shiobara Pumped Storage Power Station

| name_official =

| image = File:Sabigawa dam.JPG

| image_caption = View of the Sabigawa Dam

| image_alt =

| coordinates = {{coord|36|59|44|N|139|52|07|E|region:JP_type:landmark|display=inline,title}}

| country = Japan

| location = Nasushiobara, Tochigi Prefecture

| status = O

| construction_began =

| opening = 1994

| demolished =

| cost =

| owner =

| operator = TEPCO

| res_name =

| res_capacity_total = {{convert|11900000|m3|acre.ft|abbr=on}}

| lower_res_name =

| lower_res_capacity_total = {{convert|10500000|m3|acre.ft|abbr=on}}

| plant_pumpgenerators = 3 x 300 MW

| plant_turbines =

| plant_pumps =

| plant_hydraulic_head = {{convert|338|m|ft|abbr=on}}

| plant_capacity = {{convert|900|MW|abbr=on}}

| plant_capacity_factor =

| website =

| extra =

}}

The Shiobara Pumped Storage Power Station (塩原発電所) is a pumped-storage hydroelectric power station in Nasushiobara, in the Tochigi Prefecture of Japan. It has a total installed capacity of {{convert|900|MW}}.

The power plant started operation in 1994.{{cite web|title=Shiobara Pumped Hydro Power Station|url=http://www.energystorageexchange.org/projects/842|website=DOE Global Energy Storage Database|publisher=US Department of Energy (DOE)|accessdate=20 November 2015}}

Like most pumped-storage facilities, the power station uses two reservoirs, releasing and pumping as the demand rises and falls.

The upper reservoir is contained by the Yashio Dam, a rock-fill dam.

The lower reservoir is contained by the Sabigawa Dam, a concrete gravity dam.{{cite web|title=Case Study 11-02: Benefits due to Power Generation – Large Scale Pumped Storage Power Plants, Japan|url=http://www.ieahydro.org/reports/Annex_VIII_CaseStudy1102_LargeScalePS_Japan.pdf|publisher=IEA Hydropower Implementing Agreement Annex VIII|accessdate=20 November 2015|url-status=dead|archiveurl=https://web.archive.org/web/20150924032857/http://www.ieahydro.org/reports/Annex_VIII_CaseStudy1102_LargeScalePS_Japan.pdf|archivedate=24 September 2015}}{{cite web|title=Press Release - Water Pumping of The Shiobara Power Station for Urgent and Temporary Useand Asking Our Customers for More Electricity Conservation|url=http://www.tepco.co.jp/en/press/corp-com/release/07082003-e.html|website=www.tepco.co.jp|publisher=TEPCO|accessdate=20 November 2015}}

The power station employs three 300 MW pumping/generation units. The first 2 units started operation on 24 June 1994 and the third unit was started on 16 June 1995.{{cite web|title=Special Note on Power Generation Facility|url=http://www.tepco.co.jp/en/corpinfo/illustrated/electricity-supply/facilities-note-e.html|publisher=TEPCO|accessdate=20 November 2015}}