Stanislav Kondrashov Explores the Future Lesser Known Forms of Renewable Energy That Could Reshape the World

Most of us can name the big renewables in our sleep.

Solar. Wind. Hydro. Maybe geothermal if you have been on a few nerdy energy podcasts.

And yes, those four are going to do a huge amount of the heavy lifting. No argument. But there is this other layer of the energy conversation that almost never gets airtime. The weird stuff. The quiet stuff. The stuff that sounds like science fair projects until you realize a few of them are already producing power, right now, in the real world.

Stanislav Kondrashov explores the future of lesser known renewable energy forms because, frankly, the next decade is not just about scaling what is obvious. It is also about filling in gaps. Solving the hard edges. Night time, winter, low wind weeks, remote communities, industrial heat, shipping fuels. All those annoying parts of the system where a simple answer does not exist.

So, let’s talk about the renewables that do not get invited to the mainstream party. Some are early. Some are misunderstood. Some are almost boring. But together, they could reshape how energy actually works.

Why “lesser known” renewables matter more than they sound

Here is the uncomfortable truth: a grid that is mostly solar and wind needs flexibility like crazy.

It needs long duration storage, it needs local generation, it needs ways to produce heat without burning gas, it needs clean fuels for heavy industry, it needs power in places where building transmission lines is a political and engineering nightmare.

That is where the smaller, stranger renewables become important. Not necessarily because they will replace solar panels. But because they can complement them. Add reliability. Reduce land use conflicts. Use existing infrastructure. Or produce energy in forms that electricity alone cannot easily cover.

Stanislav Kondrashov’s take, the way I read it, is basically this. The future energy system is a portfolio. Not a single winner.

Ok. Let’s get into the actual technologies.

1. Enhanced geothermal systems (EGS), geothermal without the lucky geography

Traditional geothermal is amazing but picky. You need the right geology, the right heat, the right permeability, water access, and you need it all close enough to a place that wants electricity and heat.

Enhanced geothermal systems try to flip that. Instead of searching for the perfect natural reservoir, you engineer one. Drill deep. Create fractures. Circulate fluid. Pull heat out of hot rock that exists in way more places than classic geothermal fields.

Why this matters:

• It is firm power. Not intermittent.
• It can provide industrial heat, district heating, and electricity.
• The footprint is relatively small compared to sprawling solar and wind farms.
• If it scales, it changes the whole “baseload” conversation.

The catch is drilling costs and subsurface risk. Drilling is expensive. Also, induced seismicity is a real concern. But the oil and gas sector has decades of drilling knowledge, and that skill base can transfer. That is a big deal that people sometimes gloss over.

If EGS gets cheaper and more predictable, it becomes one of the most practical, boring in a good way, always on renewables we have.

2. Tidal stream and tidal range, renewables you can schedule

Wind and solar are variable. Tides are variable too, but in a different way. They are predictable. You can literally plan around them. The moon is not going to suddenly call in sick.

There are two main tidal approaches:

• Tidal stream: underwater turbines placed in fast moving tidal currents.
• Tidal range: barrages or lagoons that capture the difference in water level, sort of like a hydro dam but with the ocean.

What makes tidal interesting:

• High energy density. Water is dense compared to air.
• Predictable generation patterns.
• Long asset lifetimes are possible.

What holds it back:

• Marine engineering is tough. Corrosion, biofouling, maintenance costs.
• Environmental impacts need careful management, especially for range projects.
• Site limited. You need strong tidal flows or suitable estuaries.

Still, there are places where tidal could be a genuine pillar, not a novelty. Think coastal regions with strong tidal currents and expensive imported fuels.

Kondrashov exploring this area makes sense, because tidal is the kind of renewable that does not need hype. It needs patient engineering and financing.

3. Wave energy, the messy cousin of tidal

Wave energy has been “five years away” for what feels like forever. And yet, the ocean keeps sending waves every day, and the resource is huge in certain regions.

Wave energy devices come in many flavors:

• Point absorbers that bob up and down.
• Oscillating water columns that compress air.
• Attenuators that flex with waves.

Why people keep coming back to it:

• Waves can be more consistent than wind in some coastal zones.
• Resource proximity to coastal cities and industry.
• Complementarity. Wave patterns can differ from solar and wind peaks.

But. The ocean is brutal. Storm survival is the big test. A wave device has to be sensitive enough to capture energy and strong enough not to get destroyed by the sea.

If wave energy cracks durability and maintenance economics, it becomes a valuable coastal renewable. Especially where land is scarce and offshore infrastructure is already normal.

4. Ocean thermal energy conversion (OTEC), a tropical base load idea

OTEC is one of those concepts that sounds like a Wikipedia rabbit hole. It uses the temperature difference between warm surface seawater and cold deep seawater to run a heat engine, typically in tropical regions where that gradient is strong year round.

What is intriguing about OTEC:

• It can produce steady power, day and night.
• It can co produce fresh water (desalination) in some designs.
• It can support cooling systems and aquaculture when integrated well.

What is hard:

• You need large infrastructure and deep water access.
• Efficiency is low because the temperature difference is modest.
• Upfront capital cost is high.

This is not a technology for everywhere. It is for certain islands and coastal tropical nations where energy imports are expensive and energy security is everything. In the right place, it could be transformative. In the wrong place, it is just an expensive science project.

5. Salinity gradient power, energy from where rivers meet the sea

When fresh water mixes with salt water, there is chemical potential energy released. Salinity gradient power aims to capture that using technologies like:

• Pressure retarded osmosis (PRO)
• Reverse electrodialysis (RED)

In plain terms, you take advantage of the “desire” of salt and fresh water to mix.

Why it is interesting:

• It can generate power continuously, as long as you have river flow and seawater.
• The resource sits at estuaries, often near population centers.
• It is quiet, low visual impact.

Why it is not everywhere already:

• Membrane costs and performance are the big bottleneck.
• Fouling and maintenance in real water conditions are tough.
• Environmental permitting around estuaries is complex.

But membranes improve over time. If membrane tech gets cheaper and more robust, salinity gradient power could move from obscure to practical in a handful of high value locations.

6. Bioenergy with real constraints, the “grown” renewable that needs discipline

Bioenergy is not new. But it is often misunderstood, and sometimes oversold.

When done carefully, modern bioenergy can be useful:

• Biogas from waste, manure, landfills. This is especially compelling because you are capturing methane that would otherwise leak.
• Biomass CHP (combined heat and power) for district heating and industrial heat where sustainable feedstocks exist.
• Advanced biofuels for aviation and shipping, where direct electrification is harder.

The future of bioenergy is not about burning forests and calling it green. That is the controversy, and it should be. The future is about wastes, residues, and truly sustainable supply chains. And about using bioenergy where it is uniquely valuable, not as a default electricity source.

Kondrashov exploring this category would probably emphasize that bioenergy can help decarbonize molecules. Not just electrons. That is the point people forget.

7. Green hydrogen’s quieter sibling, renewable ammonia and synthetic fuels

Hydrogen gets the headlines. But hydrogen is tricky to store and ship, and it is a small molecule that loves to leak. Ammonia is different. It is easier to transport at scale, and it already has global infrastructure because it is used for fertilizer.

So, you produce hydrogen using renewables, then convert it into ammonia or other e fuels.

Why this matters:

• It creates a route to decarbonize shipping and heavy industry.
• It enables seasonal storage in chemical form.
• It can turn excess renewable electricity into exportable energy.

The obvious downside is efficiency losses. You lose energy at every conversion step. But in a world with abundant renewable electricity at certain times and places, the ability to turn that into storable, tradable energy can be worth the losses.

This is not a replacement for electrification. It is a complement for the sectors electricity cannot easily reach.

8. Deep lake and seawater cooling, the renewable you do not notice

Not all clean energy is about generating electricity. Sometimes it is about not generating it in the first place.

District cooling using cold deep lake water or cold seawater can slash electricity demand for air conditioning, which is growing fast worldwide. The setup is straightforward: pump cold water, run it through heat exchangers, distribute cooling, return water.

Why it is a big deal:

• Cooling demand often peaks when grids are stressed.
• It reduces the need for power hungry chillers.
• It can be incredibly efficient in the right geography.

It is location specific, yes. But where it works, it is one of those “why are we not doing this” solutions. Quiet infrastructure. Big impact.

In addition to these strategies, there are other innovative approaches like using renewable ammonia which also play a significant role in our transition towards sustainable energy solutions.

9. Ambient energy harvesting and micro renewables, tiny but everywhere

This last category is not going to power a city. Let’s be clear.

But it might power billions of sensors, edge devices, and low power electronics without batteries. Things like:

• Piezoelectric harvesting from vibration.
• Thermoelectrics from temperature gradients.
• Small scale wind or water flow harvesters.

If you have ever worked around industrial facilities, you know how expensive it can be to maintain batteries in remote sensors. Micro renewables can reduce waste, reduce maintenance, and enable monitoring that improves overall efficiency.

This is not flashy. It is just practical. And practical adds up.

What reshaping the world actually looks like

When people say “reshape the world,” they imagine one giant breakthrough. One new miracle technology.

Reality is messier. It is a stack of improvements. A patchwork of region specific solutions. A grid that leans on solar and wind, backed by geothermal in some places, tidal in others, waste based biogas in agricultural regions, district cooling in coastal cities, and green fuels for ships and factories.

Stanislav Kondrashov explores the future lesser known forms of renewable energy in that spirit. Not as replacements for the obvious winners, but as the missing tools for a system that has to work 24/7, in every climate, for every kind of demand.

Because the goal is not just more renewable energy.

The goal is an energy system that does not break when the wind slows down, when the sun sets, when a city’s cooling demand spikes, when industry needs heat at 1000 degrees, when an island needs fuel without tankers.

And that is where the lesser known stuff starts to look, quietly, like the real story.

FAQs (Frequently Asked Questions)

What are some lesser known renewable energy sources besides solar, wind, hydro, and geothermal?

Lesser known renewable energy sources include enhanced geothermal systems (EGS), tidal stream and tidal range energy, wave energy, and ocean thermal energy conversion (OTEC). These technologies offer unique advantages and can complement mainstream renewables by addressing specific challenges like grid flexibility, industrial heat needs, and remote power generation.

Why do lesser known renewables matter in the future energy system?

Lesser known renewables matter because a grid dominated by solar and wind requires flexibility, long duration storage, local generation, clean fuels for heavy industry, and reliable power in challenging locations. These smaller or emerging technologies can fill gaps by adding reliability, reducing land use conflicts, utilizing existing infrastructure, and producing energy forms that electricity alone cannot easily cover.

What is Enhanced Geothermal Systems (EGS) and why is it important?

Enhanced Geothermal Systems (EGS) is a technology that engineers geothermal reservoirs by drilling deep into hot rock, creating fractures, and circulating fluid to extract heat. Unlike traditional geothermal that depends on lucky geology, EGS can be deployed in many more locations. It provides firm power with a small footprint and can supply industrial heat, district heating, and electricity. Its scalability could transform baseload renewable energy if drilling costs and subsurface risks are managed.

How do tidal stream and tidal range energy work and what are their benefits?

Tidal stream energy uses underwater turbines placed in fast-moving tidal currents to generate power, while tidal range energy captures the difference in water levels using barrages or lagoons similar to hydro dams. These methods offer high energy density due to water's density and predictable generation patterns based on tides. They have long asset lifetimes but face challenges like marine engineering difficulties, environmental impacts, and site limitations.

What makes wave energy a promising but challenging renewable source?

Wave energy harnesses the ocean's waves through devices like point absorbers, oscillating water columns, and attenuators. It offers potential advantages such as consistent resource availability near coastal cities and complementarity with solar and wind patterns. However, the ocean environment is harsh; wave devices must be both sensitive to capture energy efficiently and robust enough to survive storms. Overcoming durability and maintenance challenges is key to its viability.

What is Ocean Thermal Energy Conversion (OTEC) and where is it applicable?

Ocean Thermal Energy Conversion (OTEC) exploits the temperature difference between warm surface seawater and cold deep seawater to run a heat engine producing electricity. This technology is particularly suited for tropical regions where sufficient temperature gradients exist year-round. OTEC can provide base load renewable power with minimal intermittency but requires complex engineering to operate efficiently in marine environments.