Pruthvi leads editorial and product at Earth Energy Log. Covers Indian energy policy, project finance, and the structural shifts in solar manufacturing.
Time-of-Day (ToD) tariffs charge more for electricity in peak hours and less during solar hours. India's 2023 rules set peak rates about 20% higher and solar-hour rates about 20% lower; a March 2026 draft amendment revises the peak multipliers, pushes rollout deadlines to 2027-28 and links ToD to demand response and mandatory storage for large solar prosumers. This explainer decodes both and their effect on rooftop-solar and battery economics.
India has roughly 70 GW of offshore wind potential off Gujarat and Tamil Nadu but zero megawatts installed. A ₹7,453 crore viability gap funding scheme approved in September 2024 aims to build a first 1 GW — 500 MW off each state — with SECI running the auction and the first tender expected off Tamil Nadu in 2026. This analysis explains the scheme, the economics and why India is a decade behind.
India is moving to one market-clearing price across all power exchanges. CERC's July 2025 order proposes day-ahead coupling from January 2026, run round-robin by IEX, PXIL and HPX. A Grid-India pilot found just a 0.3% welfare gain, yet it reshapes renewable price discovery and IEX's dominance.
In 2026 the best solar panels in India come from Waaree, Adani, Tata Power Solar, Vikram Solar, Premier Energies or RenewSys — all ALMM List I approved for the PM Surya Ghar subsidy. Budget ₹25–₹40 per watt, and prefer TOPCon over mono PERC.
On-grid solar is the cheapest for most Indian homes (~₹50,000/kW, ₹78,000 PM Surya Ghar subsidy, no battery) but goes dark in a power cut. Off-grid runs without the grid but costs 2–3x more and gets no subsidy. Hybrid adds battery backup and keeps the solar subsidy. This guide shows how to choose.
India cut the ₹1.4 lakh crore legacy dues that once choked renewable developers to ₹4,109 crore by February 2026. But ₹25,287 crore of current dues, ₹6.47 lakh crore of accumulated DISCOM losses and a 40 GW PSA backlog keep off-taker risk — and the solar cost of capital — high.
A home solar battery in India in 2026 costs roughly ₹35,000–45,000 per usable kWh for lithium (LiFePO4) and ₹8,000–10,000 per kWh for tubular lead-acid — a 5 kWh lithium pack runs ₹1.8–2.5 lakh installed. PM Surya Ghar does not subsidise the battery itself.
India's renewable build-out is outpacing its grid. Transmission caused ~two-thirds of the 470 GWh of clean power curtailed on the ISTS in Q1 2026, and line additions are running at ~80% of target. The Green Energy Corridor and a ₹2.44 lakh crore CEA plan must close the gap to hit 500 GW by 2030.
Solar incentives in 2026 can cut your system cost by 20-40% or more: the US offers a 30% federal tax credit, the UK 0% VAT plus export payments, the EU national grants and reduced VAT, and India the PM Surya Ghar subsidy. This guide compares solar incentives across major markets — tax credits, grants, net metering, export tariffs and VAT relief — and explains how to claim and stack them.
Solar panels last 25-30+ years in 2026, with quality panels warrantied 25-40 years and still producing ~87-92% of rated output at end of warranty. They degrade under ~1% per year (under 0.3% for the best). Inverters last 10-15 years and are usually replaced once. This guide explains solar panel lifespan, degradation, what shortens it, and how to make panels last.
Yes — solar panels work in winter and on cloudy days. They're actually more efficient in cold temperatures, and produce 10-25% of normal output under cloud. The real winter limits are shorter daylight, a lower sun angle and snow cover, not the cold. This guide explains how solar performs in winter and cloudy weather, by season and region, and how net metering smooths the seasonal dip.
Are solar panels worth it in 2026? For most homeowners with a suitable roof and high electricity prices, yes — payback is typically 6-12 years and panels last 25+ years, delivering an effective 8-15% return. But it depends on five factors: your electricity price, location/sun, roof, upfront cost, and export rate. This guide shows when solar is worth it, when it isn't, a worked example, and how to decide.
Solar & Storage Live UK 2026 runs September 22–24 at the NEC Birmingham — the UK's biggest renewable energy event. Expected 15,000+ attendees, 300+ exhibitors. 2026 threads: CfD AR7 winner showcase, UK domestic solar manufacturing scaling, residential battery boom post-FiT, and UK-EU energy trade post-Brexit. This guide previews what to watch.
EU PVSEC 2026 (European Photovoltaic Solar Energy Conference and Exhibition) runs September 7–11 at Messe Wien, Austria — the world's largest solar science + technology conference. Expecting 3,500+ researchers and 200+ exhibitors. 2026 threads: perovskite tandem commercialization, 30%+ efficiency module designs, recyclable module breakthroughs, and the Fraunhofer ISE roadmap. This guide previews what to watch.
Portugal's solar market reached ~7 GW operating capacity by Q1 2026, growing ~40%/year — the second-fastest in the EU after Poland. Alqueva is Europe's largest floating solar project, Portugal's auctions set world-record-low prices, and residential autoconsumo is booming — even as a grid-connection backlog and curtailment bite. This guide covers the Portugal solar market: capacity, Alqueva, autoconsumo, pricing, green hydrogen, and the 2030 outlook.
The Netherlands solar market reached ~28 GW operating capacity by Q1 2026 — among Europe's highest per capita. The salderingsregeling net-metering scheme is being phased out from 2027, suppliers now charge terugleverkosten (export fees), and netcongestie (grid congestion) has frozen many connections. This guide covers Netherlands solar market structure, SDE++ reform, the battery surge, floating-solar leadership, and the 2030 trajectory.
Spain solar autoconsumo (self-consumption) reached ~9 GW of installed residential and commercial capacity by Q1 2026. A typical 5 kWp Spanish residential autoconsumo solar installation costs €5,500–€8,500 installed, with compensación simplificada (simplified compensation) for grid-export surplus. This guide covers Spain solar autoconsumo regulations, pricing, the new RD244/2019 framework, batteries, and the IRPF/IBI tax benefits.
A solar roof (integrated photovoltaic shingles or laminated metal) costs $4.50–$7.00 per watt in the US in 2026 — roughly 2x a standard solar panel install. Tesla Solar Roof, GAF Energy Timberline Solar, and a handful of competing systems lead the category. This guide compares the leading solar roof products, walks through when one actually beats standard panels, and shows the real installed cost math.
A solar roof in the US in 2026 costs $4.50–$7.00 per watt installed — roughly 2x standard panels. Financing through a $40,000–$60,000 solar roof loan at 6.5–9.5% APR over 15 years runs $310–$480 per month before incentives. After the 30% federal ITC and bill savings, net monthly cost typically falls $100–$220/month. This guide compares solar roof loans, leases, PPAs, and the real net cost.
Solar panel cleaning in the US in 2026 costs $150–$400 per residential visit, with frequency ranging from once per year in rainy climates to four times per year in the desert Southwest. This guide covers when solar panel cleaning actually pays back, regional schedules, what to ask a service company, DIY methods that don't void your warranty, and how soiling losses affect annual production.
DIY solar panel cleaning equipment for a US homeowner in 2026 costs $30–$150 in one-time gear: a soft-bristle brush on a telescoping pole, a deionized water filter (or distilled water), and a safe access setup. This guide covers what solar panel cleaning equipment you actually need, what's optional, what's overrated, and what to avoid (pressure washers and abrasive brushes that void module warranties).
A solar panel cleaning visit in the US in 2026 costs $150–$400 for residential. The math on whether it pays back depends on your climate, system size, and electricity rate. This guide gives you the calculator: estimated annual soiling loss × system size × electricity rate vs. cleaning service cost. Plus 2026 regional cost guides, frequency recommendations, and the line where cleaning stops being economic.
A US solar farm in 2026 prices at $0.85–$1.10 per watt installed and sells power at $25–$40 per MWh on a 25-year PPA — the cheapest new-build generation in most of the country. This guide covers solar farm economics, the top US states for development, leading developers, project finance under the IRA, and what makes a solar farm actually pencil.
Germany's EEG solar feed-in tariff (Einspeisevergütung) in 2026 ranges from 5.81 to 12.92 ct/kWh depending on system size and feed-in modality. The tariff is guaranteed 20 years from commissioning. The Solarpaket I (effective 2024) and Solarpaket II (effective 2025) reforms simplified registration, allowed shared building solar (Mieterstrom), and reduced administrative barriers. This guide covers the 2026 EEG rates, eligibility, and the reform trajectory.
Solar panel costs in India in 2026 range from ₹25–35 per watt for premium Tier 1 modules to ₹18–22 per watt for value-tier ALMM modules. A typical 5 kW residential rooftop costs ₹2.5–3.5 lakh installed; PM Surya Ghar subsidy reduces customer outlay to ₹1.5–2.0 lakh. This guide covers per-watt rates, system pricing by size, financing, and how to avoid overpaying.
Solar installation in India in 2026 takes 30–45 days from contract signing to commissioning. The process includes site survey, structural assessment, DISCOM application, equipment delivery, physical installation, electrical connections, inspection, net-metering, and commissioning. This guide walks through every step, what to expect at each stage, and what can go wrong.
India agrivoltaics has scaled past 250 MW across Maharashtra, Gujarat, Rajasthan and Karnataka pilots in 2026, using vertical bifacial and elevated single-axis tracker layouts. Crop yields run 70-100% of conventional and solar yields 85-95% of ground-mount, but land-use approval complexity is the binding constraint. This guide covers what's built, the technologies, the economics, the regulatory hurdle, and what could unlock GW-scale growth.
PM-KUSUM has deployed ~2.8 million solar agricultural pumps and 4 GW of grid-connected solar by Q1 2026. State implementation varies sharply — Maharashtra and Rajasthan lead; Punjab and Haryana lag — driven by DISCOM cooperation, subsidy-disbursement speed and local installer ecosystems. This guide covers the three components, state performance, the Component-A pivot, farmer economics, and the expected KUSUM 2.0.
ALMM-listed solar module capacity in India reached about 194 GW by May 2026, but ALMM-listed cell capacity sits near 30 GW — a roughly six-to-one module-to-cell gap. From 1 June 2026 the ALMM List-II cell mandate forces government and open-access projects onto domestic cells, while wafer and polysilicon imports remain almost total.
SECI and state DISCOMs cleared 4.2 GW of standalone battery energy storage capacity in the January–March 2026 window, with the lowest discovered tariff falling to ₹2.18/kWh — a 14% drop versus Q4 2025.
TOPCon will dominate module shipments through 2027, but HJT's per-watt manufacturing cost gap has closed faster than analysts forecast in 2025. Here is the data — and why developers in India should keep a 12-month watching brief on HJT before committing to TOPCon-only pipelines.
Wind+solar hybrid projects optimised for complementary generation patterns deliver 25–35% higher capacity factor than either standalone. Indian SECI wind+solar+BESS tenders awarded 3.2 GW in 2025–2026 at tariffs of ₹3.10–3.50/kWh — within 15% of standalone solar despite the firming.
India's renewable energy sector workforce reached 1.1 million in 2025, projected to need 2.3 million by 2030 to support the 280 GW solar target plus storage, wind, and hydrogen build-out. Skills gaps are most acute in BESS commissioning, grid-forming inverter operations, and floating solar engineering.
India's solar company landscape spans three layers: module makers (Waaree, Tata Power, Adani, Vikram, Premier Energies), utility-scale EPC contractors (Tata Power Solar, Jakson Green, Sterling and Wilson), and developers. ALMM-listed module capacity crossed 193 GW by May 2026. Tata Power Solar led EPC installations in 2025; BESS-capable execution is the new differentiator.
The EU's Carbon Border Adjustment Mechanism enters its definitive phase in 2026 with an expanded scope that now touches polysilicon, ingots, and select inverter components. Chinese and Indian exporters face new embedded-emissions reporting obligations that will reshape EU module sourcing through 2028.