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Hydro

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Hydro

Harman Motor Works · Published by Harman Motor Works

Positive — 100% positive (17 reviews)

Last updated 2 Oct 2026

Revive a vintage hydro-electric power station and generate power for the local township. Manage both on-site and township power demands, manage your funding levels and perform all manner of maintenance, upgrades and other duties.

DJCTQ l

£7.49

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

4 Sept 2026Lowest: £7.49 · Highest: £7.496 Oct 2026

Action, Indie, Simulation, Casual · 2025 · More £5 - £15 games

Take charge of a historic hydro-electric site in Hydro, an engaging simulation where you balance on-site needs with township demands. Manage funding and perform upgrades to keep the lights on for all.

About this game

  • Realistic simulation of a 1930s-era vintage hydro-electric power station

  • Interact with vintage machinery and manage your fatigue levels - across day and night shifts

  • Realistic day and night cycle and player rest phases

  • Dynamic weather system - random fog, rain, thunder and lightning affecting game play

  • React to over three dozen (36+) unique demands for township power and get rewards (or not!)

  • Order supplies, monitor reserves and maintain oil levels and fuses

  • Research and apply over a dozen (12+) unique upgrades to enhance the power station

  • Maintain a series of power poles within the immediate area and ensure your power output is reliable

  • Reputation system - your actions can have long-lasting effects!

  • House-keeping requirements - wipe-up oil stains, clean windows and graffiti

  • Contend with multiple auditors who will occasionally visit and check your performance

  • Almost endlessly-varied game play and multiple game-ending events

  • Customize your experience! Adjustable difficulty settings means fun for both casual and 'hardcore' players alike

WELCOME TO HYDRO!

Get-to-grips with vintage machinery from yesteryear! 

The local township has directed old No. 101 Hydro-electric Power Station be pressed back into duty and you're the sole custodian for the job!

Keep your wits: not only generating power quietly, without blowing fuses or starting fires, but also managing and maintaining your power station's supply levels (e.g. gear oil, fuses, battery acid) to keep it running smoothly.

You'll also need to manage your fatigue levels and work efficiently to stay profitable and keep your funding levels in the green - or risk shutdown by the township's council.

WHEN THE RIVER IS WILD...

Generate power day and night so long as the river is flowing fast.  Your main goal in Hydro is to generate electricity for the Township whilst dealing with obstacles that come your way.

Work both day and night shifts, encounter unique events and township power demands based on the time of day.

CONNECT ("SYNC") TO THE TOWNSHIP POWER GRID

Use quick reflexes to connect to the township power grid!  But be careful not to blow that Grid Fuse!  Did you remember to order a spare grid fuse?

FEED POWER TO THE TOWNSHIP

The township is hungry for power, so Hydro must be ready to deliver!  In addition, sometimes they'll need a helping hand with delivering peak-load power demands; thus, you'll be receiving 'Township Demands' from the township when there is a power shortage

Respond to over two-dozen such demands ranging from mayor press conferences and town carnivals all the way to popular radio shows in the evenings and new factory commissioning events.

Ensure your machinery and components are in tip-top shape and manage fatigue levels so that you can stay on-shift for the duration and generate the required power, otherwise you'll miss out on much-needed funding to stay afloat.

REPUTATION SYSTEM / NEWSPAPERS

As sole custodian of Hydro, start your career with the full support of the township! However, your shiny reputation rating is in danger of being chipped-away if you fail to make the grade.

Claw-back your reputation rating with careful management of the power plant!

Your negative actions may land you in the township's newspaper.  Conversely, if you do a good job, you may just hear about it, too.

KEEP THE LIGHTS ON

Your power station will need its on-site battery accumulators charged so you can keep your own lights on. You'll be leaning on your trusty old generator once again to help make this happen.

Accumulators are not endlessly robust resources - they need care - charge them too fast and their 'condition' rating drops, meaning they won't charge efficiently (and in the worst case, will struggle to charge at all).  As you charge the accumulators and run the local services such as power station lighting, you'll be wearing-out the local power fuses which will also need attention...

APPLY UPGRADES!

You'll be dealing with a lot of antiquated machinery, so by using your 'Upgrade Blueprint', you'll be able to bring the old power station into the modern age (almost), and make it perform better than ever before!

WHEN THINGS GO WRONG...

  • Watch that old Generator! It has a tendency to overheat and it may well just catch fire one day if you're not careful.

  • Destroying your generator ends your Hydro career.  Emergency systems like the Generator Fire Control system - if primed and used promptly - might save your generator...this time. 

  • Fail to lubricate machinery and the power station becomes host to a shower of sparks and a cacophony of noises and you may get noise complaints, some with monetary fines attached (but always affecting your reputation rating).

  • Fail to keep the accumulator maintained and it will struggle to take a healthy charge...this will have all sorts of ill-effects on your on-site power requirements.

  • Fail to keep your network of power poles maintained and you'll find your grid output will suffer frequent 'drop-outs' of power

  • Fail to generate sufficient funding and end up in excessive debt and you may find the township treasury department will take a keen interest in your power station and you'll even risk complete power station shutdown.

HOUSEKEEPING

You're responsible for the keeping the place presentable! Clean windows and wipe up oil stains before the auditor sees...and maybe wipe-off the occasional graffiti tag...

CALM DAYS / AUDITORS

On calm river days, perform maintenance like replacing or fixing fuses, cleaning power pole insulators, researching part upgrades, cleaning the air filter, oil stains and windows and keeping the machinery oil levels topped-up.

But keep an ear out for the auditor(s)! They'll fine you every chance they get if something isn't quite right.  Some are more strict than others, and some are downright lazy.  Use some creativity to keep them at-bay...

SHIPS PASSING IN THE NIGHT

Given the bulky machinery and narrow river banks, occasionally-passing ships will need lighting guidance in the form of marker lights along the river bank, which you'll need to maintain and manage.

MANAGE YOUR FATIGUE

As the sun dips down towards the horizon, you'll find a sleeping quarters to rest and recharge between shifts. Use the opportunity to address your fatigue levels and start the next shift...maybe take another stab at keeping the township powered-up?

DYNAMIC WEATHER

Weather effects are completely random and variable and the weather has an effect on your game play in the Hydro world...meaning that Mother Nature can both help (or hinder) you. For example:

  • Rain will soak newspapers but can also help clean certain electrical components like power line insulators.

  • If lightning strikes your power station (or you!), there will be certain variable consequences...

PLAY IT YOUR WAY

The Hydro experience is designed with both casual and 'hardcore' gamers in mind. Adjustable difficulty allows for a customizable experience! Don't like having those auditors on your back? Put them on strike!  Disable or enable noise complaints at your whim, or close the shipping lane and focus purely on generating power. Choose daylight savings so your days are lengthened, and many other settings await your adjustment.

(ALMOST) ENDLESSLY-VARIED GAME PLAY!

In Hydro, things never go to plan and nothing ever happens the same way twice.  Some fuses might wear faster than others, your oil levels may consume faster sometimes (and sometimes not), supply costs will fluctuate, funding rewards will vary and even Mother Nature will at times throw a curve-ball with its ever-changing river flow speeds and weather conditions.  Maybe you'll get a strict auditor visit and fine you for an errant oil stain you forgot to clean-up...

Resting in between each shift (day or night) will randomly generate calm or fast-flowing river conditions in addition to the usual day/night cycle change and weather changes, so no play-through of the game is ever the same!

May the waters flow forever fast and your fuses last forever long...

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10
  • Processor: Intel or AMD
  • Memory: 8 GB RAM
  • Graphics: GeForce GTX 1070
  • Storage: 4 GB available space
  • Additional Notes: Requires a 64-bit processor and operating system; utilises Unreal Engine 5.4 Nanite tessellation which some AMD GPUs may encounter graphical issues displaying. If you own an AMD GPU, please download and test the Demo prior to purchase, for avoidance of any doubt.

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows 11
  • Processor: Intel or AMD
  • Memory: 16 GB RAM
  • Graphics: GeForce RTX 3070 8GB or better
  • Storage: 4 GB available space
  • Additional Notes: Requires a 64-bit processor and operating system; utilises Unreal Engine 5.4 Nanite tessellation which some AMD GPUs may encounter graphical issues displaying. If you own an AMD GPU, please download and test the Demo prior to purchase, for avoidance of any doubt.

Supported Languages

English*
*languages with full audio support

Latest news

  • AnnouncementsOfficial

    Hydro is 35% OFF during Steam's Summer Sale

    Steam's Summer Sale is Here!The Steam Summer Sale has begun, and now's a great time to get into the old abandoned power-house and help the folks down at the Township Carnival get their merry-go-rounds running, and help the hospital deal with their recent influx of patients!Just watch out for the nay-sayers who want to jam things into your water wheel...and the (at times) somewhat cynical newspaper press...Don't let the chance slip! The river never rests and the town needs your help!Happy generating! ⚡
    Read full article on Community Announcements (HarmanMotor)
  • AnnouncementsOfficial

    Hydro v1.30 brings performance optimizations and more!

    Hi everyone!I thought I would drop an update for Hydro that should improve the performance of the game on a range of hardware, as well as some more cool features!Here are the details of this v1.30 update! (confirm the version number from the Main Menu)I have implemented a 60 FPS frame rate lock for the game. This should result in reduced GPU usage across the board...your GPU shouldn't be maxed-out at 99% anymore! (unless you are running on older hardware - however you should still notice improvements in that scenario too!) In my testing, this change results in much smoother game play across the board, as the game should hold a consistent FPS with less (if not no) frame rate spikesI have added a scroll-bar for the Game Options dialog box in the Pause menu for easier navigationThere are now 'Tool Highlights' that display the locations of the Hand Oiler and the Cleaning Bucket! This can be very handy if you have misplaced these items in the game world! You can see the white icons denoting the pickup item locations in the screenshot below (I have drawn red boxes on the screenshot to help you see these in-game icons):Note that you can disable these Tool Highlights by turning off the 'Tool Highlights' option in the Difficulty Settings dialog box (also note the new scroll-box feature):Fixed a minor visual bug that would result in the Foot Stool tooltip overlapping with other things such as the Accumulator StandThat's it for this update! I hope you enjoy it and enjoy the performance bump! Also note that we are now only literal DAYS away from the Empire Water Works Demo being released! Please visit the Store page for Empire Water Works below and wishlist the game, so that you're notified once it's released! I have been working extremely hard on bringing the Empire Water Works Demo to you and I am so excited to finally get it released very soon!Until next time, happy generating!
    Read full article on Community Announcements (HarmanMotor)
  • Patch NotesOfficial

    Hydro v1.29 small patch - lighting improvements

    Hi everyone!Here's another small, but mighty patch for Hydro. This one focuses mostly on 'natural' lighting levels in the buildings - both during the day and night. Previously these were painfully low especially at night time with the lights off. Whilst 'real', this didn't lend well if you were playing and the fuses suddenly went out. Now, you'll notice (some pics below too for comparison) that building interiors at night (and also during the day) will be better lit. Of course, powered lighting remains mostly unchanged, but those will add ontop of these new increased natural light levels. This has been done for the power station main building, the sleeping quarters and also the storage unit.ALSO: the flashlight's strength has also been GREATLY improved...so much so it might glare out a bit on close inspection of some things, but if you stand back a bit more, you should be OK. The overall lightness is much improved and in my opinion helps light the scene especially at night, much better.Natural lighting improvements:Power station:Sleeping Quarters:Flashlight improvements:That's it for this update, if you haven't been following my latest project - Empire Water Works - please check it out at the link below! I have recently announced the public demo will be going live on June 19th...demo teaser video below! If you like what you see, please remember to Wishlist so you're notified of more news about it when it happens!Anyway, until next time, happy generating!
    Read full article on Community Announcements (HarmanMotor)
  • AnnouncementsOfficial

    30% off Hydro during Steam's Spring Sale!

    Spring time is here for Hydro and during Steam's Spring Sale, you can get 30% off the game. If you've been holding-back, now's the time to jump in! 🛞🌊Please also consider Wishlisting my upcoming game, Empire Water Works, to stay up to date with the development process and be the first to find out when the Demo hits and the game releases!
    Read full article on Community Announcements (HarmanMotor)
  • Patch NotesOfficial

    Small bug fix to Hand Oiler position in Guided Tutorial

    v1.28 -Small but important bug fix to resolve a recent issue that was causing Hand Oiler to become virtually impossible to be picked up by the player during the Guided Tutorial after the recent changes to the interact dot precision. This bug was only encountered during the Guided Tutorial. Re-positioned the default position of the Hand Oiler during the Guided Tutorial. All fixed! :)
    Read full article on Community Announcements (HarmanMotor)

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