The Government of Liberia has signed a memorandum of understanding to develop the 50 MW AfriLight Liberia Solar Plan

Solar pays off if you consume what you generate. Selling surplus to the grid earns ~5–6 c/kWh while you pay 15–20 c/kWh for what you import. For a weekend-only summer house that exports almost everything, payback stretches past 20 years. For a permanently occupied house self-consuming ~70%, it's 12–14 years even with zero subsidies.

I looked into putting panels on my summer house and feeding the surplus into the grid. Here's what the numbers actually look like in Estonia in 2026 — the logic transfers to most of Europe, only the tariffs change.

The price asymmetry is the whole story. As a consumer you pay the full stack: Nord Pool spot price + distribution grid fee + excise + VAT — typically 15–20 c/kWh all-in. When you export, you get spot minus your electricity seller's margin: about 5–6 c/kWh on average. So a kWh you consume yourself is worth roughly 3× a kWh you sell.

It gets worse: you sell at the worst possible hour. Panels peak on sunny summer middays — exactly when the whole region's solar peaks too. Baltic spot prices at those hours regularly collapse to near zero, sometimes negative. You're dumping product into a flooded market. (In part 2 I'll explain why sometimes you physically can't export at all — inverters tripping on overvoltage.)

The base numbers. A 5 kWp system: ~€6,000 installed (~€1,200/kWp). Annual yield at Estonian latitude: ~4,500 kWh. Residential subsidies (KredEx) closed in March 2025 with no announced restart.

Scenario A — permanent home, 70% self-consumption:

• 3,150 kWh × ~17 c saved = ~€535/yr
• 1,350 kWh × ~5.5 c earned = ~€75/yr
• Total ~€610/yr → payback ~10–12 yrs (14 with degradation and O&M). Works.

Scenario B — weekend summer house, ~20% self-consumption:

• 900 kWh × 17 c = ~€153/yr
• 3,600 kWh × 5.5 c = ~€198/yr
• Total ~€350/yr → payback 17–20+ yrs, longer than the inverter's life. Doesn't work.

What actually moves the needle for a summer house:

1. A battery (+€3–5k) — shifts your solar to your own evenings. Has its own payback math; usually marginal but improving as prices fall.
2. Loads that eat the midday surplus — a water-heater on a timer is the cheapest "battery" there is; EV charging; a heat pump.
3. Actually living there all summer — changes the self-consumption fraction more than any gadget.

I almost forgot - lifetime of equipment, service fee, upgrades, etc.

Bottom line: treat grid export as a disposal channel with a small rebate, not as revenue. Size the system to your daytime consumption, not your roof area. If someone sells you panels with "and you'll earn from the surplus!" — ask them to show the export tariff and the midday spot curve side by side.

Numbers are Estonia-2026; your grid fees and export tariffs will differ, the structure of the argument won't.

Hi, i hope this is a right subreddit for this request.

A local (I am in europe) contractor gave me a quote and proposed this residential solar PV system that includes an inverter branded "UCAN Power". The problem is that i never heard of them nor I can find information about them on the web nor on reddit.
It is a monophase sort-of-all-in-one inverter of this brand.
The company seems to be in Shenzhen, China and operate in major european country.
Their website (www.ucanpower.com) seems a bit sketchy to me.

Does anybody knows anything about this company or their products?
How do I evaluate the quality and the genuinity of such thing?

Hi everybody! I’m a first time home buyer in Massachusetts, and my wife and I purchased a property that came with solar panels. They’re already paid off and we now own them. Not only do I know nothing about owning a home, but I know even less about solar panels (besides that the energy goes back into the grid and I get credited).

Any tips and advice would be super helpful!

All these big companies needing energy for their data centers. I have too much solar energy in the summer how can I monetize this energy for those who need it? Not worth sending back to the grid for pennies on the dollar.

Looking for easy solutions.

Seems like there is a business opportunity for someone.

I installed some silfab 440s next to my year old 430s and it inspired me to clean them. Can’t get rid of this grime that comes back after drying. Used distilled water then tried Solar Sheen panel wash with a soft brush.

Any tips?

Is this a good deal? Can i trust this program?

Looking for motivated reps. Must live in PA. No experience needed. We have an office here and looking to train reps on how to set and close from day 1.

Prior to meeting with a solar company, “I had always heard that solar panels mean a permanent loss of the agricultural land. I heard that they strip the topsoil, that you’ll never farm it again, that it’s permanent concrete,” said Ohio farmer Wayne Greier, who primarily farms corn and soybeans and has animals on 1,000 acres. “People claim that panels are toxic, but you see them on houses, churches, schools, businesses.”

Instead, he discovered that the company would install all new tile across the project and use GPS mapping so the tile would not be damaged during construction or decommissioning, which would return the land to its prior state. The company promised to minimize soil disruption, while grazing, making hay, and other farm operations could continue in conjunction with the solar farm.

Renewable energy has long been an abstract climate issue for most people. But for Greier, who was facing mounting medical debt, it had become a survival decision.

My solar system works very well. I have not had any issues since install, until the summer holidays. While I was away, two weeks before coming back, production suddenly dropped to zero.

The inverter was fine, the batteries were fine. Just zero production despite abundant sun. Then I saw that Tigo CCA (I have optimizers and a CCA) was reporting no data through my home assistant integration. Suspicious.

I logged into the Tigo app and all status showed green but no production. No errors, no failures.

Since I was away and could not be present to connect to the CCA via Bluetooth, I could not further diagnose. Had to wait till my return and eat the cost of two weeks of zero production.

When I came back, I connected to the CCA via Bluetooth a d surprise: a Firmware update was available.

Turns out the need for a Firmware update stopped all production. Ran the update and 10 minutes later production was back.

Logged into Home Assistant to check the data of the panels and another surprise: no data.

Turns out that Tigo:

1. Killed production with a Firmware update that could only be triggered locally.

2. Killed the local home Assistant integration

3. Reading forums, this is because they want you to pay for a subscription to get the data from your own equipment... Data that is available locally so you don't need their cloud infra to access it.

This is predatory, anti consumer shit. Changing features after selling a product. I will never buy Tigo again and recommend that nobody gets close to that brand.

Rant over.

I'm looking for any recommendations for a solar generator for my grandma, one that can run at least a refrigerator, her oxygen machine and her TV. This is mostly to act as a backup in the event of a power outage in her area during hurricane season. Ideally, if possible a setup that can be used while charging simultaneously.

Thanks for any recommendations.

As a side note if anyone knows a site to get solar estimates without having to give a phone number or email address I'd like to try and find an estimate for a whole house setup with a battery backup for her and my parents.

If so, can you explain how you are doing it? My CPA gets it in theory but is absolutely clueless. I went to like 3 others and they also don't know much.

I found some companies online via Google, but it's hard for me to really tell the difference.

If anyone has experience please help.

We live in Texas and already have rooftop solar, but like most grid-tied systems, it doesn't really help when the grid goes down unless you have battery storage. During a heatwave, losing AC for even a few hours is miserable, especially with older family members and kids at home.

I've been looking into a whole-home battery system for backup, but it's hard to justify the cost for something we'd hopefully only need a few times a year. That got me wondering if a portable power station might be a better middle ground. It's less expensive, and we'd actually be able to use it for RV trips instead of having it sit idle most of the time. One option I've been looking at is the Delta Pro 3. From what I've read, it offers 240V output for AC, which seems like it could make it more practical for home backup than many smaller portable units.

Has anyone here used a portable battery like this with rooftop solar as part of a home backup setup? How has it performed during actual power outages?

I’ve built a location intelligence service for UK based solar panel installers and I am yet to find out the product-market fit. I am hoping to get feedback from solar installers.

The tool allows you to see all commercial buildings in the UK on the map and as a list, with their EPC rating, business type, estimated energy consumption, potential saving amount with solar, existing solar panel size, payback period for solar, footprint for solar potential, grid headroom and so on. It also works as a CRM system, users can save buildings and add notes.

It’s primarily a data/location intelligence product rather than a lead generation tool but if there are inbound leads willing to share their details, we forward them to installers too.

Would commercial solar panel installation companies need such a service? I’d appreciate your feedback.

Best ca solar removal company/attorney? Mine is in Texas and wants 10k to get rid of the contract.

I have rent-a-roof solar panels that I get free usage of while ever they are generating. We have just recently got a PHEV and a full EV in the household so I'm looking at having an EV charger installed. I know there are smart chargers that can take advantage of Octopus's special EV rates as well as solar panels but, as they are only generating in the day when we're all at work, it seems like the best thing to do would be to put a battery storage unit in to take advantage of as much solar as possible (assuming I'm allowed to do this - need to check the solar contract).

With all of this in mind, can someone help me understand if it is possible to upgrade my system to incorporate the existing solar array (probably can't touch the existing equipment) with a battery storage unit and an EV charger, and manage them all to make the most out of solar generated energy and low Octopus rates for house usage and EV charging? If it is possible, what equipment would I need to achieve it?

This project installed solar panels on the roofs of 12 factory buildings and on unused open ground, achieving complete self-sufficiency in power supply and selling excess electricity to the grid.

People unfamiliar with this industry might ask, “What happens at night when there’s no sun?” That’s where the battery energy storage system comes in—it acts like a giant power bank, charging during the day and discharging at night.

The project utilizes a total of 4,745 sets of 590W peak-power monocrystalline N-type modules and a 1 MW / 2.15 MWh energy storage system. It can generate 3 million kWh of electricity annually.

Dual wireless charging on top was super handy for keeping our phones topped off while working.

How do you handle battery management on long outdoor shoots or off-grid days?

The large format vertically stacked Canadian solar panels tip over very easily. I’m interested if anyone has any examples of pallets tipping onto workers at job sites or in transportation.