District of Columbia Population, Economy, Jobs & Key Trends | Data Lab
This report connects multiple official indicators with a time tree for District of Columbia from 1985 to 2024, showing long-run change and transition points that a single-metric Insight does not provide.
What changed in this region
District population rises for much of the series, drops after the pre-pandemic peak and then turns upward again. Median household income and median home value maintain long upward paths, while unemployment trends lower after an early high with a pandemic-era interruption. Federal-capital functions, the Home Rule framework, regional transit and major civic and cultural institutions provide essential context for these urban changes.
What changed at a glance
A long pre-pandemic increase is followed by a sharp decline and then a recent return to growth.
Median household income increases across the observed series and remains on an upward path.
Median home value rises throughout the period, keeping housing affordability a separate issue from income growth.
The rate declines after its early high, rises modestly during the pandemic period and then moves lower again.
Events & policy to read alongside the data
Events and policies are shown as period context; the report does not claim causation without authoritative evidence.
The L'Enfant Plan linked public institutions, ceremonial space and major avenues and established the core spatial structure of Washington.
The District Emancipation Act is a central legal turning point in Washington's African American and civil-rights history.
The District has an elected Mayor and Council while Congress retains constitutional authority, creating a distinctive federal-local structure.
Metrorail reshaped regional access, while recent CleanEnergy and Climate Commitment laws make buildings and transportation central to urban climate policy.
Regional profile
Start with the regional profile and key indicators, then continue through cities, places, local context and long-run change.
Attractions, nature & landmarks
Notable attractions, natural areas and landmarks in regional context.
Rock Creek Park
Rock Creek Park is a major urban natural area in Washington, D.C., combining forest, stream, recreation and historic-resource protection.
National Park ServiceAnacostia Park
Anacostia Park is a riverfront urban park in eastern Washington that connects recreation, trails and the broader story of the Anacostia River.
National Park ServiceRegional life & infrastructure
Howard University
Howard University is a major HBCU in Washington and an important center for education, research, medicine and civil-rights history.
Howard UniversityThe District of Columbia is both the federal seat of government and a local jurisdiction with elected government under continuing congressional constitutional authority.
District of Columbia Office of the Attorney GeneralD.C. housing, labor and commuting are strongly connected with Maryland and Virginia, making metropolitan context essential.
Washington Metropolitan Area Transit AuthorityChange summaries
Total primary energy production
District of Columbia primary energy production declines sharply over the long run and then enters a sustained recent recovery.
Total energy consumption
District of Columbia total energy consumption moves through repeated high and low periods but trends below its historical peak over the long run.
Population
District of Columbia population rises for much of the series, drops during the pandemic period and then begins to recover.
Median household income
Median household income follows a consistent upward path across the observed series.
Median home value
Median home value rises throughout the observed series and reaches progressively higher levels in the later period.
Unemployment rate
The unemployment rate falls for years after an early high, rises modestly during the pandemic period and then declines again.
Charts
Charts are fetched when this section comes into view.
Detailed narrative
The District of Columbia is both a federal capital and a local city. Population rises for years, falls sharply around the pandemic period and then begins to recover, while household income and home value keep moving higher. Federal institutions, professional employment, Metrorail, the National Mall and the regional housing market all shape how those statistics should be read.
Population is recovering after a major disruption
District population grows for years and then falls sharply around the pandemic period. The latest observations move upward again and reverse part of that decline.
In a compact urban jurisdiction, housing costs, remote work, regional commuting and household moves between D.C., Maryland and Virginia can show up quickly in population patterns.
Income and housing both rise, but affordability remains separate
Median household income and median home value both maintain long upward paths. Because they do not move at the same speed, higher income should not be treated as proof of improved housing affordability.
D.C.'s housing market is shaped by supply constraints, development density, Metrorail access and the broader Maryland-Virginia metropolitan market.
The labor market shows long-run improvement with a pandemic interruption
Unemployment falls after the early high, rises modestly during the pandemic period and then resumes its decline. Federal and professional employment is important, but hospitality, retail, education and health also shape local labor conditions.
Recent population recovery overlaps with lower unemployment, but the two trends should not be treated as directly causal without separate evidence.
Federal-capital and local-city functions overlap
The National Mall, Smithsonian and federal institutions create national administrative, visitor and cultural functions, while Howard University, Rock Creek Park and Anacostia Park are part of everyday local urban life.
The Home Rule framework gives the District an elected local government while Congress retains constitutional authority. Recent building-energy and climate laws add another layer to Washington's role as both capital and urban-policy jurisdiction.
Data coverage and recent changes
This page combines 6 indicators across 5 topics from 2 data providers. 6 indicators support comparison across at least two periods, and available coverage runs from 1985 to 2024.
Recent data signals
- Total primary energy production: 2023 1,825 Billion Btu → 2024 1,907 Billion Btu (+4.5%)
- Median household income: 2023 106,287 US dollars → 2024 109,870 US dollars (+3.4%)
- Total energy consumption: 2023 135,280 Billion Btu → 2024 138,469 Billion Btu (+2.4%)
- Median home value: 2023 724,600 US dollars → 2024 737,100 US dollars (+1.7%)
- Population: 2023 672,079 persons → 2024 681,294 persons (+1.4%)
FAQ
What is the most important recent population change in the District?
Population falls sharply after the pre-pandemic peak and then begins to recover in the latest observations. More releases are needed to judge how complete that recovery becomes.
Does higher household income mean housing became more affordable?
Not necessarily. Median home value also rises persistently, so income and housing need to be evaluated together.
What makes D.C. institutionally different from a state?
It is the federal seat of government with an elected local Mayor and Council, while Congress retains constitutional authority over the District. Its regional transit and federal institutions also make metropolitan context especially important.
District of Columbia change is defined by post-pandemic population decline and recovery, sustained growth in income and home value, and a much lower long-run unemployment profile. Federal-capital functions, Home Rule, regional transit, civic institutions and building-and-climate policy create a uniquely layered urban structure.
Data tables
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Coverage & methodology
Population, income, housing and unemployment use multi-year American Community Survey estimates. Adjacent releases overlap, so small changes are best read within longer directions and turning points. Historical, place and policy context is based on official federal and District sources.
Sources
- US_EIA TEPRB
- US_EIA TETCB
- US_CENSUS_DATA_API B01003_001E
- US_CENSUS_DATA_API B19013_001E
- US_CENSUS_DATA_API B25077_001E
- US_CENSUS_DATA_API B23025_003E+B23025_005E
- National Archives REGIONAL_EVENT
- National Park Service REGIONAL_EVENT
- U.S. National Archives REGIONAL_EVENT
- U.S. National Archives REGIONAL_EVENT
- Smithsonian Institution Archives REGIONAL_EVENT
- U.S. National Park Service REGIONAL_EVENT
- U.S. National Archives REGIONAL_EVENT
- U.S. National Archives REGIONAL_EVENT
- Smithsonian Institution Archives REGIONAL_EVENT
- U.S. National Park Service REGIONAL_EVENT
- Smithsonian Institution Archives REGIONAL_EVENT
- U.S. National Park Service REGIONAL_EVENT
- Library of Congress REGIONAL_EVENT
- U.S. National Archives REGIONAL_EVENT
- U.S. National Archives REGIONAL_EVENT
- Smithsonian Institution Archives REGIONAL_EVENT
- District of Columbia Office of the Attorney General REGIONAL_EVENT
- Washington Metropolitan Area Transit Authority REGIONAL_EVENT
- Smithsonian Institution Archives REGIONAL_EVENT
- District of Columbia Office of the Chief Financial Officer REGIONAL_EVENT
- Smithsonian Institution Archives REGIONAL_EVENT
- D.C. Law Library REGIONAL_EVENT
- Smithsonian National Museum of African American History and Culture REGIONAL_EVENT
- D.C. Law Library / Council of the District of Columbia REGIONAL_EVENT
- District of Columbia Department of Energy and Environment REGIONAL_EVENT
- District of Columbia Department of Energy and Environment REGIONAL_EVENT
- D.C. Law Library REGIONAL_EVENT
Population in the District of Columbia: Expansion, Setback and Uneven Recovery
The District’s ACS five-year population estimate climbed from 593,955 in the release ending in 2011 to 701,974 in the release ending in 2020. It then declined to 670,587 in 2022 and edged upward to 681,294 in 2024. This pattern suggests a long expansion followed by a setback and an incomplete recovery. Because adjacent ACS five-year estimates share most of their observations, the sequence is best understood as a broad demographic signal, not a set of precise annual migration counts. Independent population estimates help interpret the recent period.
Download report dataKey findings
The ACS population series expands markedly from 2011 to the period ending in 2020.
The subsequent decrease precedes a partial rise in the 2023 and 2024 estimates.
The latest ACS total remains below its pre-pandemic reading for 2019.
Population estimates, commuting activity and residential demand are different measurements.
A changing residential base
The estimate ending in 2011 was 593,955 residents; by 2015 it had reached 647,484, and by 2019 it was 692,683. A sustained rise across these benchmark releases indicates that the District expanded its residential base over the preceding decade. The observation year is the end of a five-year sampling window rather than a single-year headcount.
The implications are broader than the number of residents. Schools, neighborhood retail, municipal services and housing markets face different demands depending on age, household size and neighborhood distribution. The aggregate series cannot show which of those needs increased most.
From peak to disruption
The observation ending in 2020 was 701,974, followed by 683,154 in 2021 and 670,587 in 2022. These figures mark a pronounced shift in direction in the ACS series. They cannot, however, be converted into an annual net-exodus figure, especially given overlapping samples and the particular measurement problems around the pandemic.
The 2024 estimate remains substantially above the 2011 level. That longer perspective matters: the later decline interrupted rather than entirely erased the preceding expansion. Describing the city as either simply shrinking or fully recovered would obscure the two phases.
What the rebound does and does not show
Estimates of 672,079 in 2023 and 681,294 in 2024 point to renewed upward movement. Even after the rise, the 2024 ACS figure remains 11,389 below the 2019 figure. The recovery should therefore be described as partial within this statistical product.
The D.C. Office of Planning also reports an increase in its distinct annual population-estimates series. That evidence is useful confirmation of the broad direction, but it should not be spliced into the ACS values: a population-estimates program and a multiyear survey use different methods and may produce different totals.
A capital city and its metropolitan region
The federal district is both a place of residence and a major employment destination for commuters who live in neighboring jurisdictions. Growth in jobs located in the District need not imply equal growth in people living inside the district. Likewise, fewer residents do not prove that economic activity contracted proportionately.
Housing costs, mobility choices, births, deaths and domestic or international moves can each affect population. This single total-population series cannot separate these channels. Assertions about the dominant driver require migration and vital-statistics evidence.
Why planners need more than the headline
District-wide counts are useful for sizing services but often insufficient for allocating them. A school-capacity decision needs local child-population evidence, while older-adult services need an age-specific measure and transit analysis needs the relationship between residents and commuters.
A sound monitoring system would combine Census population estimates, detailed ACS tables and geographic planning datasets without merging their incompatible counts. Comparisons should also examine margins of error and use nonoverlapping multiyear windows when possible.
Reading the series responsibly
ACS table B01003_001E provides five-year population estimates. Its adjacent releases overlap heavily; a movement from one release to the next is not an exact estimate of what happened during the final calendar year. The pandemic-period changes also deserve special caution.
This report uses the series to establish scale and direction, while the District’s planning publications supply institutional context. Neither source alone proves the effect of a specific housing or economic policy on population change.
Related year mini reports
Official sources
District of Columbia Household Income: Strong Nominal Gains, Harder Living-Cost Questions
The District of Columbia’s ACS five-year median household income rises from $61,835 in the estimate ending in 2011 to $86,420 in 2019 and $109,870 in 2024. That is substantial nominal growth for the household at the midpoint of the local distribution. It is not, by itself, evidence of an equivalent increase in purchasing power, since the series is not adjusted here for inflation or housing costs. Nor should household income be confused with GDP earned in the city, which reflects production rather than residents’ household resources.
Download report dataKey findings
The median household income estimate rises markedly throughout the supplied series.
Nominal income gains are not the same as inflation-adjusted living-standard gains.
The geography of economic production and the residence of income recipients differ.
Distributional and housing-cost data are essential to judge who benefited.
What the measure tells us
The estimate was $61,835 in 2011, $70,848 in 2015 and $86,420 in 2019. By the release ending in 2024 it had reached $109,870. The repeated rise establishes that the midpoint of the district’s household-income distribution shifted higher in current-dollar terms. It does not show how much each household earned in any one year.
A median is a positional statistic rather than an average. It provides no direct measure of the bottom decile, the top decile, household wealth or how many households struggle to pay rent. Those questions call for distributional and expenditure measures.
Recent acceleration in dollar levels
The series records $93,547 for 2021, $101,722 for 2022, $106,287 for 2023 and $109,870 for 2024. These successive levels reinforce the long-running nominal upward direction, although the heavy overlap between ACS five-year windows prevents precise attribution of the change to the last calendar year.
Prices changed substantially during parts of this interval. A household can receive more dollars and still face tighter budgets if rent, utilities and groceries rise faster. The observed series therefore cannot establish whether real living standards improved by the same proportion.
A metropolitan economy, not a single household
The federal government and related professional services are central to the district’s economic context, but the district also draws workers from Maryland and Virginia. BEA regional GDP estimates measure where output is produced; a Census household-income estimate describes households living in the district.
A productive job center can have economic output shaped by commuters while its residential income distribution reflects a different population. Treating GDP growth, average wages, personal income and the household median as interchangeable obscures this distinction.
Income against the cost of place
Housing is a critical counterweight to a rising income headline. Owner-occupied home values, asking rents, transportation expenses and family composition all affect whether the midpoint household can secure the same standard of living over time.
An increased median might coexist with persistent rent burdens among lower-income households. The appropriate next indicators are rent-to-income ratios, inflation-adjusted medians, poverty, income quantiles and housing tenure. The current series alone cannot determine who gained the most.
A fiscal lens with different units
The D.C. Office of the Chief Financial Officer publishes periodic revenue forecasts used for budget planning. These forecasts incorporate expectations about economic conditions and the tax base, not a direct tabulation of the household median. Both are informative, but they answer different questions.
A policy assessment should compare fiscal projections, employment and distributional evidence without claiming that a coincident law produced the observed changes in household income. Timing alone is not a causal evaluation.
Method and uncertainty
ACS table B19013_001E is a current-dollar five-year estimate. Adjacent vintages share survey years and are not separate calendar-year observations. Sampling uncertainty also matters when drawing conclusions about smaller changes.
This report identifies a strong nominal long-run pattern and sets limits around what it can mean. Statements about real prosperity or causal explanations would require price-adjusted data and additional controls.
Related year mini reports
Official sources
Employment in the District of Columbia: Lower Long-Run Unemployment, Unequal Access
The supplied ACS-derived unemployment measure for the District of Columbia, falls from approximately 11.01% in the estimate ending in 2013 to 6.91% in 2019 and 6.35% in 2024. This indicates a substantial improvement over the full survey sequence, although the 2020–2022 observations form a relatively flat interval. The figures are derived from rolling ACS observations, not the official monthly unemployment rate published by BLS. A lower resident unemployment rate is also distinct from growth in jobs physically located in the federal capital, many of which are filled by commuters.
Download report dataKey findings
Long-run ACS-derived unemployment falls from roughly 11.01% in 2013 to 6.35% in 2024.
Readings for the period ending in 2020–2022 show little directional change.
ACS survey estimates and monthly BLS unemployment releases should remain separate.
Unemployment does not fully capture labor-force participation or job quality.
Long-run improvement, not a straight line
The supplied values show 10.02% in 2011, 11.01% in 2013, 9.58% in 2015 and 6.91% in 2019. The series initially moves upward before recording a marked downward trajectory. The central finding is a lower share of unemployed people among the measured labor force over the longer horizon.
Unemployment excludes people outside the labor force, including some who may want employment but are not actively searching. A decline in the ratio can therefore have more than one explanation. Employment-population and participation rates are needed to check whether more residents gained sustained work.
An uneven middle interval
The ACS-derived rate is about 7.12% in 2020, 7.08% in 2021 and 7.11% in 2022. The differences are small, and adjacent multiyear observations overlap heavily. The later estimates fall to roughly 6.48% in 2023 and 6.35% in 2024.
These values should not be read as a precise monthly account of pandemic disruption and recovery. For that question, the D.C. Department of Employment Services and BLS release different, higher-frequency labor-market products with their own definitions and revisions.
Residents and workplace jobs
The District functions as an employment center for people from the wider metropolitan region. Employers located in the district hire workers who live in neighboring states, while some district residents travel in the opposite direction. The resident unemployment rate cannot be inferred from establishment payrolls alone.
Industry shifts and demand for public services can shape the employment environment without benefiting every group equally. Education, occupation and location all influence access to jobs, none of which can be resolved by a single citywide rate.
Employment policy in context
District legislation such as the Fair Shot Minimum Wage Amendment Act of 2016 provides important institutional background. It may influence wages and business decisions, but the proximity of a policy date to a change in unemployment is not causal evidence.
Assessing a policy would require an appropriate comparison, controls for broader economic conditions and analysis of employment as well as earnings. A generalized unemployment series is an inadequate test of a specific minimum-wage or paid-leave provision.
Beyond the headline rate
Policymakers should examine whether job growth leads to stable hours, career advancement and incomes that keep pace with living costs. Underemployment, job turnover, lengthy commuting and childcare obligations can affect access to work even when unemployment is trending downward.
Useful complements include labor-force participation, employment by industry and occupation, wages, long-term unemployment and differences across neighborhoods. They answer distinct questions and should not be presented as interchangeable measures.
What the survey can support
This report uses the provided ACS-derived unemployment rate, rounded to two decimal places. Because it is built from five-year ACS observations, consecutive releases cannot precisely identify the condition of one isolated calendar year.
The evidence supports a broad downward shift, interrupted by a flatter interval, but not strong claims about the effects of one statute or about unobserved disparities between population groups.
Official sources
Housing Value in the District of Columbia: Asset Appreciation and Access to a Home
The ACS five-year median value of owner-occupied housing in the District of Columbia, rises from $442,600 in 2011 to $601,500 in 2019 and $737,100 in 2024. Sustained appreciation can strengthen the paper wealth of existing owners while raising the entry cost faced by prospective buyers. But the survey measure is not the median price of homes actually sold in the most recent year, and it tells us very little on its own about renters’ monthly housing burdens. A fuller account of housing affordability must combine values with household incomes, rents, financing conditions, production and targeted assistance.
Download report dataKey findings
Owner-occupied median values rise persistently over the supplied ACS period.
The latest level reflects survey-reported value, not the median sale price of completed transactions.
Existing homeowners and first-time buyers experience appreciation differently.
Affordable-housing programs should be judged with supply and beneficiary data, not value alone.
A sustained rise in values
The median value stood at $442,600 in 2011, $475,800 in 2015 and $601,500 in 2019. It then moved to $737,100 in 2024. On the defined ACS measure, the long-run direction is a substantial increase.
The variable covers the value of owner-occupied homes reported in a multiyear survey. It is not a sales-only sample and should not be mistaken for the latest typical transaction price. Changes in the composition of the occupied housing stock can also affect the reported median.
Momentum across the recent vintages
The supplied estimates are $618,100 in 2020, $635,900 in 2021, $705,000 in 2022, $724,600 in 2023 and $737,100 in 2024. These levels reinforce the story of appreciation, although differences between consecutive releases cannot be interpreted as precise annual gains because their data-collection periods overlap.
Higher values do not demonstrate that more homes were sold or that new supply stalled. Transaction volumes, mortgage rates and building-permit data would be needed to distinguish a price environment from a change in market activity.
Two sides of appreciation
For an owner with an established mortgage, rising property value may increase equity. For a household attempting to purchase, the same rise can make a down payment or monthly financing costs harder to manage. A single favorable-looking asset trend can therefore produce sharply different lived experiences.
The median value is especially incomplete for renters, who are a major part of the District’s housing market. Asking rents, actual paid rents and the share of renter households that are cost-burdened must be measured separately.
The role of housing assistance
The District’s Department of Housing and Community Development issues Housing Production Trust Fund reports describing financing and assistance for affordable housing. Those reports help identify policy commitments and the characteristics of projects receiving support.
It would be incorrect to infer that a change in the ACS median home value is the effect of that fund. Evaluation requires completed units, income eligibility, locations, occupancy timing and the populations actually served, rather than the citywide owner-value median alone.
Putting housing and income together
Comparing housing values with median household income raises useful affordability questions, but it does not provide a complete mortgage qualification model. Interest rates, household wealth, other debt, insurance, taxes and household size all shape actual access.
Housing conditions also vary considerably across neighborhoods and property types. A district-wide middle value can conceal local barriers, including disparities in access to credit or differences between condominium and single-family markets.
What the survey can establish
ACS B25077_001E measures the estimated median value of owner-occupied units across rolling five-year survey windows. Comparisons with overlapping releases and the absence of margins of error here limit conclusions about short-term movement.
The defensible conclusion is sustained long-run appreciation in this survey product. Claims about exact sale-price growth, renting costs or the causal success of a housing policy require additional datasets.
Related year mini reports
Official sources
Energy in the District of Columbia: Limited Local Production and an Imported-Electricity System
The EIA State Energy Data System records 1,907 billion Btu of total primary energy production and 138,469 billion Btu of total energy consumption in the District of Columbia, for 2024. Local production has recovered from a very low reading in 2005 but remains small beside the scale of consumption. The EIA separately reports that the district receives roughly 98% of its electricity from plants in surrounding states. These observations point to three different policy questions: how much energy is used, where electricity comes from and how efficiency and cleaner supply can be improved without treating local production growth as complete energy independence.
Download report dataKey findings
Primary energy production rises to 1,907 billion Btu in 2024 after a deep earlier decline.
Total energy consumption of 138,469 billion Btu is much greater than local primary production.
Electricity supplied from surrounding states is central to the District’s energy system.
Building efficiency policies address demand, not merely the volume of local generation.
A distinctive production history
The EIA SEDS production estimate is 3,327 billion Btu in 1985, falling to only 44 billion Btu by 2005. It begins to rise from that very low base, reaching 62 in 2010, 632 in 2015, 1,435 in 2019 and 1,907 billion Btu in 2024. The broad pattern is a long decline followed by recovery.
A large percentage increase from a very low starting point can be misleading. The latest production level remains below the 1985 observation. Moreover, primary energy production is not the same statistical concept as electricity generated within the district.
Consumption tells another story
District energy consumption totals 158,697 billion Btu in 1985 and 157,329 billion Btu in 2019, before falling to 132,166 billion Btu in 2020. The estimate for 2024 is 138,469 billion Btu, pointing to a partial recovery from the 2020 level rather than a complete return to the earlier benchmark.
Consumption can move because of commercial activity, travel, temperatures, fuel substitution and building use. A fall in the aggregate is not automatically proof that a specific conservation policy succeeded. Sector-level use and weather-adjusted evidence would be required to isolate such effects.
The geography of electricity supply
The EIA’s district energy profile says about 98% of electricity is imported from generating plants in surrounding states. Small generators within the District contribute only a limited part of the city’s supply, although solar has become important within that local generation mix.
Imported electricity creates questions about regional transmission, external generation sources and demand peaks. The relationship between SEDS primary production and total energy consumption cannot be used as a literal electricity-import calculation: different fuel and accounting categories are involved.
Buildings as an energy-policy lever
Clean Energy DC sets out actions concerning buildings, transport and the energy system. The Department of Energy and Environment also administers Building Energy Performance Standards developed under the Clean Energy DC Omnibus Act framework. This makes the performance of existing buildings a major local policy focus.
Targets and instruments should be distinguished from measured outcomes. To assess the standards, analysts need building-level energy-use intensity, compliance, emissions and expenditures. An aggregate SEDS production or consumption series cannot demonstrate that the program has already met its stated targets.
What local growth can mean
Primary energy production of 1,907 billion Btu in 2024 is well above the 2005 low, so there has been a material change in the local production measure. But the District remains an urban jurisdiction whose energy needs are met largely through systems beyond its borders.
Locally generated solar electricity, purchased renewable electricity and primary energy production measure different things. Conflating them would exaggerate self-sufficiency or obscure the role of external grids. Electricity procurement policies deserve separate monitoring.
How to monitor the transition
SEDS series TEPRB and TETCB are used here in consistent units of billion Btu and are interpreted as production and consumption, respectively. The separate EIA electricity profile supplies the evidence about interstate electricity flows.
For an assessment of household affordability or climate performance, these indicators should be complemented by retail electricity prices, sectoral energy use, building benchmarking and greenhouse gas inventories. They establish important context but do not settle every outcome of the energy transition.
Related year mini reports
Official sources
- U.S. Energy Information Administration · District of Columbia State Energy Profile Analysis
- U.S. Energy Information Administration · District of Columbia State Electricity Profile 2024
- D.C. Department of Energy and Environment · Building Energy Performance Standards
- D.C. Department of Energy and Environment · Clean Energy DC